Relevant bibliographies by topics / Spearman´s correlation coefficient

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  1. Journal articles
  2. Dissertations / Theses
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  4. Conference papers

Academic literature on the topic 'Spearman´s correlation coefficient'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Spearman´s correlation coefficient"

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Santic, M., Biljana Radja, Antonela Paladin, and G. Pleslic. "The influence of some abiotic parameters on growth inclination in ascidian Halocynthia papillosa (Linnaeus, 1767) from the northern Adriatic sea (Croatia)." Archives of Biological Sciences 62, no. 4 (2010): 1007–11. http://dx.doi.org/10.2298/abs1004007s.

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This study investigated the relationships between growth orientation, body height and depth on sampling sites. The survey was carried out during 2008 in the area of the island Mali Losinj. A total of 46 specimens of Halocynthia papillosa (Linnaeus, 1767) were analyzed. The growth orientation varied from 60? to 80? and body height was in the range of 20 mm to 110 mm. Pearson?s correlation coefficient shows the positive correlation between growth orientation and body height and the same correlation is determined between depth and body height. The Spearman rank correlation coefficient shows a more positive correlation neither between growth orientation and body height nor growth orientation and depth.
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Páleš, Dušan, and Milada Balková. "Regression analysis of expanded polystyrene properties." Mathematics in Education, Research and Applications 6, no. 2 (December 30, 2020): 54–63. http://dx.doi.org/10.15414/meraa.2020.06.01.54-63.

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Own measurements examine the tensile strength of expanded polystyrene (EPS) depending on its bulk density. 30 samples were used to calculate the correlation coefficients between these two properties. In addition to the standard Pearson coefficient, we also calculate the rank correlation coefficients, Spearman´s and Kendall´s. By testing the hypotheses, we verify the correlation of the entire population. After finding a relatively close correlation (0.6 - 0.8), we apply different regression models, especially polynomial, but also exponential. We evaluate the properties of parameters in models, their point estimates and confidence intervals. Based on the characteristics of each of the seven regressions, we found the best exponential form of the dependence, before the linear polynomial. The complexity of a mathematical model does not always mean that it is also a more accurate approximation. On the other hand, a simple model makes it possible, in addition to its ease of use, to more closely reflect the examined dependence.
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Páleš, Dušan, and Milada Balková. "Regression analysis of expanded polystyrene properties." Mathematics in Education, Research and Applications 6, no. 2 (December 30, 2020): 54–63. http://dx.doi.org/10.15414/meraa.2020.06.01.54-63.

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Own measurements examine the tensile strength of expanded polystyrene (EPS) depending on its bulk density. 30 samples were used to calculate the correlation coefficients between these two properties. In addition to the standard Pearson coefficient, we also calculate the rank correlation coefficients, Spearman´s and Kendall´s. By testing the hypotheses, we verify the correlation of the entire population. After finding a relatively close correlation (0.6 - 0.8), we apply different regression models, especially polynomial, but also exponential. We evaluate the properties of parameters in models, their point estimates and confidence intervals. Based on the characteristics of each of the seven regressions, we found the best exponential form of the dependence, before the linear polynomial. The complexity of a mathematical model does not always mean that it is also a more accurate approximation. On the other hand, a simple model makes it possible, in addition to its ease of use, to more closely reflect the examined dependence.
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Páleš, Dušan, and Milada Balková. "Regression analysis of expanded polystyrene properties." Mathematics in Education, Research and Applications 6, no. 2 (December 30, 2020): 54–63. http://dx.doi.org/10.15414/meraa.2020.06.02.54-63.

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Own measurements examine the tensile strength of expanded polystyrene (EPS) depending on its bulk density. 30 samples were used to calculate the correlation coefficients between these two properties. In addition to the standard Pearson coefficient, we also calculate the rank correlation coefficients, Spearman´s and Kendall´s. By testing the hypotheses, we verify the correlation of the entire population. After finding a relatively close correlation (0.6 - 0.8), we apply different regression models, especially polynomial, but also exponential. We evaluate the properties of parameters in models, their point estimates and confidence intervals. Based on the characteristics of each of the seven regressions, we found the best exponential form of the dependence, before the linear polynomial. The complexity of a mathematical model does not always mean that it is also a more accurate approximation. On the other hand, a simple model makes it possible, in addition to its ease of use, to more closely reflect the examined dependence.
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Suciu, Oana, Radu Prejbeanu, Horia Haragus, Cosmin Faur, Roxana Ramona Onofrei, and Adrian Todor. "Cross-Cultural Adaptation and Validation of the Romanian Marx Activity Rating Scale for Anterior Cruciate Ligament Reconstruction." Healthcare 8, no. 3 (September 4, 2020): 318. http://dx.doi.org/10.3390/healthcare8030318.

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Aim: We aimed to translate, cross-cultural adapt and validate the Marx activity rating scale (MARS) of the knee for Romanian patients with anterior cruciate ligament (ACL) injury. Method: The original English form was translated according to guidelines. We included patients with ACL injury undergoing reconstruction in two centers over 3 years. Subjects completed the translated MARS, International Knee Documentation Committee (IKDC) subjective knee form and EuroQol EQ5D. The examining physician completed the Tegner Lysholm scale as an objective evaluation. Re-testing was obtained after one month. We used Spearman`s correlation to evaluate construct validity and reproducibility, Cronbach’s alpha for internal consistency and intraclass correlation for test-retest reliability. Results: We collected valid forms from 99 patients (32.1 ± 8.8 years, 64.6% males) during the preoperative evaluation and 45 were re-tested. Significant, very good correlations were found between the MARS and Tegner Lysholm (Spearman’s r = 0.712, p < 0.0001) and IKDC (Spearman’s r = 0.801, p < 0.0001). Cronbach’s alpha was 0.893 at the initial completion and 0.799 at re-test. The intraclass correlation coefficient was 0.895. Conclusions: The Romanian-translated MARS is a valid, consistent and reliable physical activity outcome measure in patients with anterior cruciate ligament reconstruction.
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Grcic, Nikola, Nenad Delic, Milan Stevanovic, Jovan Pavlov, Milos Crevar, Marko Mladenovic, and Nemanja Nisavic. "Genetic distance of maize inbred lines based on SSR markers for prediction of heterosis and combining ability." Genetika 50, no. 2 (2018): 359–68. http://dx.doi.org/10.2298/gensr1802359g.

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Genetic distance among six elite maize inbred lines was analyzed using SSR markers. Hybrid progeny obtained by crossing inbred lines according an incomplete diallel design was tested in field trials together with inbred lines per se.The objective of this study was to determine genetic distance of inbred maize lines and to examine if a significant correlation exist between the genetic distance of parental lines and the exhibited high parent heterosis (HPH) and specific combining abilities (SCA) for grain yield, ear lenght, kernel row numberand number of kernels per row. Twenty one SSR primers were used for genetic assesment of inbreds with detected 92 alleles. Genetically most distant lines were ZPL1 and ZPL5 and ZPL6 with the GD value of 0.549, while the closest one were ZPL2 and ZPL3 with GD value of 0.11. The dendrogram distinguished two main groups of inbreds: ZPL5 and ZPL6 grouped in a smaller cluster and ZPL1, ZPL2, ZPL3 and ZPL4 forming the second cluster. Values of the Spearman?s rank correlation coefficient between genetic distance among inbred lines based on SSR markers and SCA for all analyzed traits were positive and significant with the exception of rows per ear. Highest correlation was exhibited between the genetic distance and SCA for number of kernels per row (0.643). Spearman?s rank correlation coefficient between GD and high parent heterosis was positive and significant for ear length and kernel number in row with coefficient values of 0.554 and 0.611, respectively.
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Popovic, Zeljka, Ivanka Gajic, Kosovka Obradovic-Djuricic, and Dragoslav Milosevic. "Introduction to verification of the GOHAI instrument for measuring the oral health-related quality of life in patients with dentures using the Serbian preliminary version: A pilot study." Vojnosanitetski pregled 72, no. 12 (2015): 1055–62. http://dx.doi.org/10.2298/vsp140624077p.

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Background/Aim. Quality of life related to health should be seen as a multidimensional concept that, in addition to the physical symptoms associated with a disease and treatment, should include physical, psychological and social functioning of a person. The primary objective of this study was to use the Serbian preliminary version of the Geriatric Oral Health Assessment Index (GOHAI) questionnaire in oder to examine the consistency, reliability and stability, as well as an introduction to the verification tool. Methods. The GOHAI questionnaire with 6-level Likert scale, translated into Serbian, including the relevant oral health characteristics (oral hygiene, required dentures, number of teeth extracted), was filled by five specialists in prosthodontics for 30 randomly selected respondents, before and after the dental prosthetic treatment. Subsequently, in order to measure the reliability of the questionnaire, 27 patients were reinterviewed. Results. The value of Cronbach's Alpha Coefficient (Cr?) before the treatment was 0.878, and after the treatment it was 0.788 confirming the internal consistency and stability of the questionnaire. The validity of discriminatory properties of the GOHAI was confirmed by the Spearman's correlation coefficient (r), which was highly significantly associated with oral health characteristics, confirming the high reliability of the measurement. The results of test-retest analysis measured by the individual Pearson's correlation coefficient (r) were in the range of 0.34-0.97, and for the total score r was 0.927, while the Kappa coefficient was 0.63. The correlation analysis of the GOHAI score before the treatment showed that for 10 questions there was a statistically significant correlation of the score with the answers to the questions, and for 6 questions Spearman?s r was ? 0.7. After the treatment a highly significant correlation of the GOHAI was shown with the answers to 10 questions, while for 5 questions the Spearman?s r was > 0.6. The GOHAI average score before the treatment was 19.44 ? 11.12, and after the treatment 2.77 ? 3.83, where the lower value indicates better quality of life. Conclusion. The results of this pilot study confirm internal consistency and stability of the Serbian preliminary version of the GOHAI questionnaire and the causal relation between the quality of life and the characteristics of oral health of the patients with dentures. Accordingly, instrument verification is recommended.
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Nur, Wyka Faulani Hafizah, Widiana Ferriastuti, and Bambang Soeprijanto. "The Correlation between Apparent Diffusion Coefficient Value on MRI and the Pathology Consistency of Meningioma." Biomolecular and Health Science Journal 3, no. 2 (October 30, 2020): 101. http://dx.doi.org/10.20473/bhsj.v3i2.22171.

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Introduction: Preoperative evaluation of meningioma consistency is important because it will affect surgical procedures, surgical optimization, risk assessment, and patient management. The consistency of meningioma can be predicted by Apparent Diffusion Coefficient (ADC) value on MRI. ADC values are useful in quantitative tumor assessment based on diffusivity in the tumor. The objective of the study is to find out the correlation between ADC value and the pathology consistency of meningioma.Methods: A retrospective study was carried out using medical records at Dr. Soetomo General Hospital, Surabaya by January 2017 - December 2018. The ADC value was obtained by placing three ROI in the tumor and the consistency was obtained from the results of the pathology examination, followed by the Spearman correlation test.Results: There The tumor range value of ADC was 0.58 x 10-3mm2 s to 1.63 x 10-3mm2/s. The mean ADC value in soft, intermediate, and hard consistency was 1.247+ 0.200 x 10-3mm2/s, 0.950 + 0.453 x 10-3mm2/s, and 0.793 + 0.161 x 10-3mm2/s, the cut-off value of ADC was + 0.822 x 10-3mm2/s with specificity 68% and sensitivity 85%, the AUC is 0.740 with a significance value of 0.0043 (p<α, α = 0.05). It was obtained an ADC correlation with the consistency of meningioma, the significance value is p=0.000 (p<α, α = 0.05).Conclusion: There is a correlation between the ADC value and the consistency of meningioma. The ADC value can be considered for an optimal preoperative evaluation in assessing the consistency of meningioma.
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Men, Baohui, and Huanlong Liu. "Evaluation of Sustainable Use of Water Resources in the Beijing-Tianjin-Hebei Region Based on S-Type Functions and Set Pair Analysis." Water 10, no. 7 (July 12, 2018): 925. http://dx.doi.org/10.3390/w10070925.

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Beijing-Tianjin-Hebei is an area with insufficient per capita water resources. This study evaluates the current status and development trend of sustainable use of water resources in the region, and identifies specific factors influencing sustainable development so as to provide a theoretical basis and data support for the management of water resources in the Beijing-Tianjin-Hebei region. Applying the compound system of social, economic and ecological environment, this study established an evaluation index system. The evaluation index data is obtained through the relevant calculations based on the National Economic and Social Development Announcement, the Water Resources Bulletin and the National Bureau of Statistics data. The index weights are calculated using a combination of rough set and fuzzy theory. The obtained weights were added to the set pair analysis method to acquire evaluation results. Based on the traditional set pair analysis method, this study proposes a new set pair analysis method (Method 4) using S-type functions (Formula (11)) instead of the addition weighted synthesis method (Formula (10)) in the calculation of weighted connections. In order to verify the feasibility of this method, the Spearman correlation coefficient method was used to calculate the correlation coefficient between evaluation results of Method 4 and evaluation results of other traditional methods. In addition, the set pair exponential potential is adopted to determine the impact indicators of the sustainable utilization of water resources in Beijing-Tianjin-Hebei in this study. The results show that in the Beijing-Tianjin-Hebei region, the overall level of sustainable use of water resources has been gradually raised in the past 12 years. The results of the set pair analysis method that cites S-type functions have obtained higher Spearman correlation coefficients than traditional methods. The values of the correlation coefficients are 0.9954, 0.9910, and 0.9928 respectively in Beijing, Tianjin and Hebei. Moreover, according to the results of set pair exponential potential, the indicators in the region are quasi-inverse potential or strong inverse potential, including per capita water resources and the ecological environment water use rate. Thus, a dense population with scarce water resources, and a lack of ecological water are the common problems that Beijing, Tianjin and Hebei have to face.
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Leal, José, and Teresa Costa. "Tuning a semantic relatedness algorithm using a multiscale approach." Computer Science and Information Systems 12, no. 2 (2015): 635–54. http://dx.doi.org/10.2298/csis140905020l.

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The research presented in this paper builds on previous work that lead to the definition of a family of semantic relatedness algorithms. These algorithms depend on a semantic graph and on a set of weights assigned to each type of arcs in the graph. The current objective of this research is to automatically tune the weights for a given graph in order to increase the proximity quality. The quality of a semantic relatedness method is usually measured against a benchmark data set. The results produced by a method are compared with those on the benchmark using a nonparametric measure of statistical dependence, such as the Spearman?s rank correlation coefficient. The presented methodology works the other way round and uses this correlation coefficient to tune the proximity weights. The tuning process is controlled by a genetic algorithm using the Spearman?s rank correlation coefficient as fitness function. This algorithm has its own set of parameters which also need to be tuned. Bootstrapping is a statistical method for generating samples that is used in this methodology to enable a large number of repetitions of a genetic algorithm, exploring the results of alternative parameter settings. This approach raises several technical challenges due to its computational complexity. This paper provides details on techniques used to speedup the process. The proposed approach was validated with the WordNet 2.1 and the WordSim-353 data set. Several ranges of parameter values were tested and the obtained results are better than the state of the art methods for computing semantic relatedness using the WordNet 2.1, with the advantage of not requiring any domain knowledge of the semantic graph.
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Dissertations / Theses on the topic "Spearman´s correlation coefficient"

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Kalaitzis, Angelos. "Bitcoin - Monero analysis: Pearson and Spearman correlation coefficients of cryptocurrencies." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-41402.

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In this thesis, an analysis of Bitcoin, Monero price and volatility is conducted with respect to S&P500 and the VIX index. Moreover using Python, we computed correlation coefficients of nine cryptocurrencies with two different approaches: Pearson and Spearman from July 2016 -July 2018. Moreover the Pearson correlation coefficient was computed for each year from July2016 - July 2017 - July 2018. It has been concluded that in 2016 the correlation between the selected cryptocurrencies was very weak - almost none, but in 2017 the correlation increased and became moderate positive. In 2018, almost all of the cryptocurrencies were highly correlated. For example, from January until July of 2018, the Bitcoin - Monero correlation was 0.86 and Bitcoin - Ethereum was 0.82.
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Borunský, Tomáš. "Optimalizace procesu tlakového lití VN přístrojových transformátorů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228552.

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This thesis deals with choises of using mathematical statistics when optimising the compression casting process of high-voltage device transformer. There is a theoretical consideration to be found in the introduction which concerns the compression casting itself and all necessary information connected with it. Then there is a key numerical analysis part following. In the first instance there are variability problems of individual casting device discussed and then a regression analysis made to demonstrate and prove a link between the partial discharge and the key parameters of casting process. Finally an “optimal” casting sequence is suggested and alternative attitude problems with the assistance of Design of Experiments (DOE) are discussed.
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CHEN, ZHAOREN. "ANALYSIS OF EQUITY MARKETS: A SPEARMAN RANK CORRELATION COEFFICIENT APPROACH." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/612636.

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In this honors thesis, I attempted to develop an investment strategy to analyze the U.S. stock market by studying the correlations between nine sectors defined by the Select Sector Standard & Poor’s Depository Receipts (SPDR). These funds are a group of exchange-traded funds (ETFs) which are traded worldwide and can adequately represent the performance of the sectors. Through my method, I hope to identify the sector trends in the future by evaluating the sector ETF’s most recent short-term period data. This analysis will provide an alternate investment method for investors to avoid short-term investment risk as well as explanations of why I think the approach may not be valid.
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HUANG, SHIJING. "ESTIMATING ILLEGAL DRUG MARKET LOCATION IN CINCINNATI USING THE HUFF MODEL." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1090862711.

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Ivanovic, Milena. "Exploring the authenticity of the tourist experience in culture heritage tourism in South Africa / Milena Ivanovic." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7606.

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The research question addressed by this dissertation is: How is the tourist experience formed and what constitutes the authenticity of the tourist experience for two market segments (motivated and not motivated by learning) of tourists visiting (political) cultural heritage sites in South Africa. The study explores the correlation between three types of authenticity, namely objective, constructed and existential on two independent tourist samples, motivated and not motivated by learning. This research was initiated for three reasons. The first reason forms part of the research problem; South African cultural experiences received the lowest ratings from the international tourists despite the fact that culture and heritage play a role in reimaging South Africa from Big 5 destination into ‘It’s possible’ and ‘Leave ordinary behind’. It was suspected that not all types of cultural heritage products justify such a low ratings, especially not the political cultural heritage sites South Africa is famous for. The second reason emerged from the academic literature on authenticity theories and calls from the influential group of postmodernist scholars to declare the objective authenticity obsolete and replace it with the existential authenticity. The argument that; the hyperreal nature of the postmodern experience and its detachment from reality makes the authenticity of the site redundant, seemed inapt for cultural heritage sites exclusively dependent on their historical and authentic values. The third reason was the inability of the postmodern paradigm to explain the new tourism phenomenon driven by the tourists search for selfdevelopment through authentic experiences. The new emerging paradigm, transmodernity seemed to offer better theoretical framework in explaining the omnivorouessness of tourists’ consumption and the authentic nature of tourist experiences. The correlational character of the research question required a descriptive correlational design and quantitative methodology. The selected research instrument for primary data collection is a self–administered questionnaire. The sampling strategy is a non–probability sampling, and the sampling method is a convenience or accidental sample. The data was collected from November 2010 to February 2011 at the Constitutional Hill National Heritage Site in Johannesburg. The final sample (436) consists of 254 foreign and 182 domestic tourists. The questionnaire was designed to identify the variables pertinent to each type of authenticity of tourists experience and of the resultant tourist experience. The data analysis provided very interesting results. Firstly, the results of crosstabulation proved that more than half (56%) of the tourists expressed strong agreement that the Constitution Hill provided them with authentic experience, hence a proof that political heritage sites are not responsible for the overall low experiential ratings of the country’s culture and heritage. Secondly, the results of the Spearman’s correlation coefficient proved that objective authenticity as an independent variable have strong positive correlation with constructed and existential authenticity hence a proof that objective authenticity cannot be declared obsolete and replaced with existential authenticity. Finally, the results of the t–test proved that motivation for learning and place of birth do not play an important role in how tourist evaluate and experience the authenticity of the site pointing to the omnivorous nature of tourist consumption. In line with the transmodern paradigm, motivation for learning plays a critical role in triggering the transformative, authentic experience distinctive of the existential authenticity. The results of the study also showed that 32% of tourists are in fact the purposeful, New Age, transmodern Cultural Creatives. Proposed theoretical model of authenticity of tourists experience presents a theoretical platform for future research studies.
Thesis (M.A. (Tourism))--North-West University, Potchefstroom Campus, 2012.
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Bijota, Jan. "Aplikace statistické analýzy řeči pacientů s Parkinsonovou nemocí." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241988.

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This thesis deals with speech analysis of people who suffer from Parkinson’s disease. Purpose of this thesis is to obtain statistical sample of speech parameters which helps to determine if examined person is suffering from Parkinson’s disease. Statistical sample is based on hypokinetic dysarthria detection. For speech signal pre-processing DC-offset removal and pre-emphasis are used. The next step is to divide signal into frames. Phonation parameters, MFCC and PLP coefficients are used for characterization of framed speech signal. After parametrization the speech signal can be analyzed by statistical methods. For statistical analysis in this thesis Spearman’s and Pearson’s correlation coefficients, mutual information, Mann-Whitney U test and Student’s t-test are used. The thesis results are the groups of speech parameters for individual long czech vowels which are the best indicator of the difference between healthy person and patient suffering from Parkinson’s disease. These result can be helpful in medical diagnosis of a patient.
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Martinásková, Magdalena. "Porovnání účinnosti návrhů experimentů pro statistickou analýzu úloh s náhodnými vstupy." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226781.

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The thesis presents methods and criteria for creation and optimization of design of computer experiments. Using the core of a program Freet the optimized designs were created by combination of these methods and criteria. Then, the suitability of the designs for statistical analysis of the tasks vith input random variables was assessed by comparison of the obtained results of six selected functions and the exact (analytically obtained) solutions. Basic theory, definitions of the evaluated functions, description of the setting of optimization and the discussion of the obtained results, including recommendations related to identified weaknesses of certain designs, are presented. The thesis also contains a description of an application that was created to display the results.
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VODIČKA, Tomáš. "Vícekriteriální hodnocení podniků vybraného odvětví." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-188163.

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The target of this work is to create a financial analysis of selected company and an intercompany comparison of companies in selected branch. In teoretical part this work are description basic terms and methods of financial analysis and methods of intercompany comparison. In practical part this work is to create the financial situation of selected company and intercompany comparison of companies by methods of intercompany comparison. Then the resulting order of comanies is evaluated by Spearman´s correlation coefficient. In the end this work there is overall assessment of the results of the intercompany comparison and description of some problems that appeared in this work.
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Chen, Chin-Han, and 陳勁含. "Constructing Molecular Phylogeny by Pearson''s Correlation Coefficient and Molecular Phylogenetic Analysis of PRMT Super Family." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/70958272384702013640.

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碩士
中山醫學大學
生物醫學科學學系碩士班
101
Evolutionary relationship of all living organisms can be viewed by the phylogenetic tree. So far there are many methods have been developed to evaluate evolutionary relationships. However, multiple sequence alignment (MSA) should be performed before those methods. Several studies have shown that the order in which sequences were added to a MSA could significantly affect the end result. Therefore we want to find if there is another method that makes more reliable results. Our goal is to construct a unique and reasonable phylogenetic tree building method better than the others. Here we propose a novel approach to replace the MSA process. We combine pair-wise sequence alignment (BLAST) and Pearson''s correlation coefficient (PCC) to simulate the interactive relationship of compared sequences. The relationship would be clustered by hierarchical clustering (HC) method. The results have shown that our method indeed improved the problem that MSA may occur. Our method also has a better clustering ability than the conventional methods and could produce a more reasonable tree. We subsequently use our method to perform a phylogenetic analysis of protein arginine methyltransferase (PRMT) families. In addition, we are curious to find if there is a way to identify the pattern of each PRMT family, which makes a fast classification of an unknown sequence.
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Oliveira, Mário Jorge Rodrigues. "Metodologia estatística para a classificação das escolas secundárias em Portugal." Master's thesis, 2013. http://hdl.handle.net/1822/24750.

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Dissertação de mestrado em Estatística
Neste trabalho pretende-se efetuar um estudo, na área da Estatística, sobre a classificação das Escolas Secundárias (Portugal Continental e Ilhas) relativamente aos resultados alcançados nas avaliações efetuadas pelos seus alunos nos Exames Nacionais no conjunto de disciplinas com um número mais elevado de provas realizadas: Matemática A, Português, Biologia e Geologia e Física e Química A. Tem-se como principal objetivo identificar grupos de Escolas com diferentes graus de desempenho considerando os subsistemas de ensino nacional público (Escolas Públicas) e privado (Escolas com Contrato de Associação e Escolas Particulares) e a sua região (a nível nacional e a nível regional). Para isso, é construído um indicador educativo alternativo aos denominados Rankings do Ensino Secundário divulgados desde o ano de 2001 pelos meios de comunicação social, em que se pretende incorporar outros aspetos considerados relevantes para além das classificações nos Exames Nacionais. O conjunto de dados utilizados diz respeito aos registos, fornecidos pelo Júri Nacional de Exames (JNE), dos resultados obtidos pelos alunos que realizaram Exames Nacionais nos anos letivos de 2006/2007 a 2010/2011, por Escola e por disciplina, tendo por base os resultados nacionais e os da própria Escola. Neste estudo, para além da variável Escola, onde é efetuada a avaliação do aluno, são também consideradas as variáveis concelho, distrito e subsistema de ensino correspondente. Utilizando métodos da Análise Exploratória de Dados efetua-se uma análise preliminar das variáveis consideradas de forma a identificar e detetar padrões ao longo dos anos letivos observados. São, também, utilizados procedimentos da Estatística Multivariada com o objetivo de identificar, para determinadas áreas geográficas (região Norte), grupos (clusters) de Escolas com desempenhos mais semelhantes, de acordo com o indicador alternativo definido. Na análise efetuada, aplicam-se testes estatísticos (paramétricos e não paramétricos), nomeadamente (após a definição dos clusters), na caracterização e diferenciação dos clusters relativamente ao indicador alternativo proposto.
This dissertation is intended to study, in the Statistics area, about the classification assigned to the Secondary Schools (Continental Portugal and Islands), more precisely on the achieved results in their students’ assessment on the National Exams, for the amount of subjects with the highest number of students: Matemática A, Português, Biologia e Geologia e Física e Química A (that is, Maths, Portuguese, Biology and Geology and also Physics and Chemestry.). The main purpose is to identify groups of schools with distinct levels of performance, taking into account the subsystems of the national public Education (Public Schools) as well as the private (Private or with Association Contract Schools) and its region (both national and territorially). Bearing this in mind, it is built an alternative educational indicator for the so-called “Rankings” of the Secondary Schools, disclosed since 2001 by the media, which is supposed to include other aspects taken as relevant, besides the usual Exams classifications. The current dataset belongs to the listings supplied by Jury of the National Exams’ (JNE), of the exams’ results from school year 2006/2007 to 2010/2011, by school and subject, considering the national results and those from the own school. In this study, besides the variable school, where is done the student evaluation, are also taking part the variables city, district and the correspondent teaching subsystem. By using Exploratory Data Analysis methods a preliminary analysis of the considered variables can be done as a way of identify and detect patterns of the school years. Various procedures of Statistics are also used to recognize clusters of schools, to in certain geographical areas, with more similar behavior, according to the defined alternative indicator. In the analysis, statistical tests are applied (parametric and non-parametric), specifically (after the definition of the clusters), in the description and distinction of the clusters towards the suggested alternative indicator.
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Book chapters on the topic "Spearman´s correlation coefficient"

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Gooch, Jan W. "Spearman Rank Correlation Coefficient." In Encyclopedic Dictionary of Polymers, 996–97. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_15382.

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Li, Zhiqiang, Shihui Wang, and Hongchen Guo. "A Label-Correlated Multi-label Classification Algorithm Based on Spearman Rank Correlation Coefficient." In Recent Developments in Intelligent Systems and Interactive Applications, 51–58. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-49568-2_8.

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Chowdhury, Ahsan Raja, Madhu Chetty, and Nguyen Xuan Vinh. "Reverse Engineering Genetic Networks with Time-Delayed S-System Model and Pearson Correlation Coefficient." In Neural Information Processing, 624–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-42042-9_77.

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Amoo, Oseni Taiwo, Hammed Olabode Ojugbele, Abdultaofeek Abayomi, and Pushpendra Kumar Singh. "Hydrological Dynamics Assessment of Basin Upstream–Downstream Linkages Under Seasonal Climate Variability." In African Handbook of Climate Change Adaptation, 2005–24. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_116.

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AbstractThe impacts of climate change are already being felt, not only in terms of increase in temperature but also in respect of inadequate water availability. The Mkomazi River Basins (MRB) of the KwaZulu-Natal region, South Africa serves as major source of water and thus a mainstay of livelihood for millions of people living downstream. It is in this context that the study investigates water flows abstraction from headwaters to floodplains and how the water resources are been impacted by seasonal climate variability. Artificial Neural Network (ANN) pattern classifier was utilized for the seasonal classification and subsequence hydrological flow regime prediction between the upstream–downstream anomalies. The ANN input hydroclimatic data analysis results covering the period 2008–2015 provides a likelihood forecast of high, near-median, or low streamflow. The results show that monthly mean water yield range is 28.6–36.0 m3/s over the Basin with a coefficient of correlation (CC) values of 0.75 at the validation stage. The yearly flow regime exhibits considerable changes with different magnitudes and patterns of increase and decrease in the climatic variables. No doubt, added activities and processes such as land-use change and managerial policies in upstream areas affect the spatial and temporal distribution of available water resources to downstream regions. The study has evolved an artificial neuron system thinking from conjunctive streamflow prediction toward sustainable water allocation planning for medium- and long-term purposes.
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"Table of significance for the Spearman correlation coefficient." In Introduction to Statistics with SPSS for Social Science, 448–51. Routledge, 2014. http://dx.doi.org/10.4324/9781315833422-42.

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Guo, Yingchun, Gang Yan, Cuihong Xue, and Yang Yu. "Blind Assessment of Wavelet-Compressed Images Based on Subband Statistics of Natural Scenes." In Computer Vision, 1322–37. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5204-8.ch055.

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This paper presents a no-reference image quality assessment metric that makes use of the wavelet subband statistics to evaluate the levels of distortions of wavelet-compressed images. The work is based on the fact that for distorted images the correlation coefficients of the adjacent scale subbands change proportionally with respect to the distortion of a compressed image. Subband similarity is used in this work to measure the correlations of the adjacent scale subbands of the same wavelet orientations. The higher the image quality is (i.e., less distortion), the greater the cosine similarity coefficient will be. Statistical analysis is applied to analyze the performance of the metric by evaluating the relationship between the human subjective assessment scores and the subband cosine similarities. Experimental results show that the proposed blind method for the quality assessment of wavelet-compressed images has sufficient prediction accuracy (high Pearson Correlation Coefficient, PCCs), sufficient prediction monotonicity (high Spearman Correlation Coefficient SCCs) and sufficient prediction consistency (low outlier ratios) and less running time. It is simple to calculate, has a clear physical meaning, and has a stable performance for the four image databases on which the method was tested.
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Urhan, Osman Barış, and Bozkurt Koç. "Metamorphosis of the Narrative." In Advances in Media, Entertainment, and the Arts, 181–97. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4903-2.ch011.

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In this study, the role of psychological commitment to the team and fanaticism on aggression were examined. In the research, personal information form, psychological commitment to the team scale, fanaticism scale for football fans, and aggression inventory were applied to the participants. This study was conducted with 336 volunteer participants between the ages of 18-60. The independent groups t-test and Spearman Rho correlation coefficient were used in data analysis. As a result of the research, it was found that as the psychological commitment to the team and fanaticism levels increase, the aggression level increases. In addition, it is seen that the aggression levels of male participants are higher than female participants. It is thought that the research findings will contribute to the development of policies to be created to prevent aggression in sports.
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Urhan, Osman Barış, and Bozkurt Koç. "Metamorphosis of the Narrative." In Advances in Media, Entertainment, and the Arts, 181–97. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4903-2.ch011.

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In this study, the role of psychological commitment to the team and fanaticism on aggression were examined. In the research, personal information form, psychological commitment to the team scale, fanaticism scale for football fans, and aggression inventory were applied to the participants. This study was conducted with 336 volunteer participants between the ages of 18-60. The independent groups t-test and Spearman Rho correlation coefficient were used in data analysis. As a result of the research, it was found that as the psychological commitment to the team and fanaticism levels increase, the aggression level increases. In addition, it is seen that the aggression levels of male participants are higher than female participants. It is thought that the research findings will contribute to the development of policies to be created to prevent aggression in sports.
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Reva, Oleksii, Andrii Nevynitsyn, Serhii Borsuk, Valerii Shulgin, and Volodymyr Kamyshyn. "Air Traffic Controllers’ Attitude to the Mistakes Hazards during Their Professional Experience." In Safety and Risk Assessment of Civil Aircraft during Operation. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.91937.

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Air traffic controllers’ (ATCs) work process can be presented as uninterrupted set of decisions. These decisions occur and are implemented in both clear and stealth forms being influenced a lot. Determined and stochastic risks are especially important in this process. Human factor (HF) effect on flight safety is proven to be better considered through operators’ attitudes toward unsafe acts and conditions. This seamlessly integrates in ICAO safety paradigm. Air traffic controllers’ preferences system (PS) is discussed in regard to typical professional mistakes set. Using paired comparison, normative part of summary hazard and differentiating part of summary hazard, the preferences system of air traffic controllers is received. For the first time, mistakes pair summary hazard is determined on the unique qualimetric 100-point scale. Systems pair has high correlation level according to Spearman coefficient (R = 0.9727). Proposed Kendall rank coefficient outweighs the traditional one twice (Wtraditional = 0.2722, Wproposed = 0.55237). The significance level for all cases is equal to 1%. Multistep procedure of marginal opinions separation is implemented. It increased Kendall rank coefficient value up to Wproposed = 0.7. Survey procedure influenced positively on the ability of mistakes memorization, recognition, and avoidance during simulation training.
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"(A)Spatial Regression." In Spatial Analysis Techniques Using MyGeoffice®, 68–97. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3270-5.ch004.

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The global spatial lag model for stationary processes (Y=?WY+Xß+e, where W represents the neighborhood matrix while ? is the spatial autoregressive coefficient) and the spatial regimes (individual regression for each sub-region), developed within SpaceStat®, are two possibilities. An extra option is the local continuous variation framework computed by the Geographically Weighted Regression (GWR). The idea here is to adjust a regression model (the ßs of the regression model are not the same everywhere) by weighting the neighborhood observations. In this way, the estimation computation will reflect automatic adjustments, according to the distance and values of the available samples. Section “Geographically Weighted Regression” introduces this matter while the next two sections review the conventional bivariate and multivariate OLS regression, respectively. As an extension of the OLS family, non-linear relationships, regression with dummy variables, path analysis and logistic regression are briefly explained under the following section three although myGeoffice© does not cover these practices. Spearman Rank Correlation for ordinal data is presented in the last section.
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Conference papers on the topic "Spearman´s correlation coefficient"

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Marbet, G. A., P. Satiropas, C. Pantaleoni, and F. Duckert. "SECONDARY FIBRINOLYSIS, PROTEIN C ACTIVATION, PLATELET DECREASE, BUT NOT CONTACT ACTIVATION CAN BE CORRELATED TO FREE THROMBIN ACTION IN EXPERIMENTAL DIC." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643576.

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We have studied the influence of activated coagulation on antithrombotic defence mechanisms in vivo. Conventional coagulation variables, platelets (Tcy), plasminogen (Pig), α2-antiplasmin (AP) , protein C (PC), factor VIII C, factor XII and Cl-inhibitor have been measured before and during reversible tissue thromboplastin-induced DIC in the dog. Free thrombin action as derived from fibrinogen (Fbg) decrease has been expressed as integral of active thrombin concentration over time (φ). Protection by heparin H, pentosan polysulfate PPS or dermatan sulfate DS was studied. DIC had no consistent effect on the behaviour of factor XII and Cl-inhibitor, but led to the consumption (Δ) of the following variables:The Spearman correlation coefficients between and φ in the Δ whole group were all statistically significant and ranged from rs=0.51 (ΔPlg) to rs =0.94 (ΔFbg). The response of major defense mechanisms in vivo quantitatively depends on active thrombin.
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Seongho Kim, Ming Ouyang, and Xiang Zhang. "Compute spearman correlation coefficient with Matlab/CUDA." In 2012 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT). IEEE, 2012. http://dx.doi.org/10.1109/isspit.2012.6621260.

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Szmidt, Eulalia, and Janusz Kacprzyk. "The Spearman rank correlation coefficient between intuitionistic fuzzy sets." In 2010 5th IEEE International Conference Intelligent Systems (IS). IEEE, 2010. http://dx.doi.org/10.1109/is.2010.5548399.

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Meng, Chao, Xue Song Jiang, Jian Wang, and Xiu Mei Wei. "The Complex Network Model for Industrial Data Based on Spearman Correlation Coefficient." In 2019 International Conference on Internet of Things (iThings) and IEEE Green Computing and Communications (GreenCom) and IEEE Cyber, Physical and Social Computing (CPSCom) and IEEE Smart Data (SmartData). IEEE, 2019. http://dx.doi.org/10.1109/ithings/greencom/cpscom/smartdata.2019.00028.

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Di Liu, Siu-Yeung Cho, Dong-Mei Sun, and Zheng-Ding Qiu. "A Spearman correlation coefficient ranking for matching-score fusion on speaker recognition." In 2010 IEEE Region 10 Conference (TENCON 2010). IEEE, 2010. http://dx.doi.org/10.1109/tencon.2010.5686608.

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Manurung, Robbi C., Doan Perdana, and Rendy Munadi. "Performance evaluation Gauss-Markov mobility model in vehicular ad-hoc network with spearman correlation coefficient." In 2016 International Seminar on Intelligent Technology and Its Applications (ISITIA). IEEE, 2016. http://dx.doi.org/10.1109/isitia.2016.7828685.

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Li, Chao, Hui Yang, Bowen Bao, Huifeng Guo, Yong Jiang, and Jie Zhang. "Spearman Correlation Coefficient Abnormal Behavior Monitoring Technology Based on RNN in 5G Network for Smart City." In 2020 International Wireless Communications and Mobile Computing (IWCMC). IEEE, 2020. http://dx.doi.org/10.1109/iwcmc48107.2020.9148469.

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Zhao, Peirui, Xiaohong Wang, Hongliang Yu, and Shizeng Lu. "Method for Identifying Current Operating Conditions of Main Motor of Cement Rotary Kiln Based on Spearman Rank Correlation Coefficient." In 2019 34rd Youth Academic Annual Conference of Chinese Association of Automation (YAC). IEEE, 2019. http://dx.doi.org/10.1109/yac.2019.8787648.

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Narbudowicz, Adam, Max J. Ammann, and Dirk Heberling. "Impact of lossy feed on S-parameter based envelope correlation coefficient." In 2016 10th European Conference on Antennas and Propagation (EuCAP). IEEE, 2016. http://dx.doi.org/10.1109/eucap.2016.7481596.

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Xuan Wang, Hieu Duy Nguyen, and Hon Tat Hui. "Correlation coefficient expression by S-parameters for two omni-directional MIMO antennas." In 2011 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting. IEEE, 2011. http://dx.doi.org/10.1109/aps.2011.5996702.

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