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Littérature scientifique sur le sujet « HYPEROPT »

Auteur : Grafiati

Publié le 23 février 2024

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Articles de revues sur le sujet "HYPEROPT"

Suryana, Silvia Elsa, Budi Warsito et Suparti Suparti. « PENERAPAN GRADIENT BOOSTING DENGAN HYPEROPT UNTUK MEMPREDIKSI KEBERHASILAN TELEMARKETING BANK ». Jurnal Gaussian 10, n^o 4 (31 décembre 2021) : 617–23. http://dx.doi.org/10.14710/j.gauss.v10i4.31335.

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Telemarketing is another form of marketing which is conducted via telephone. Bank can use telemarketing to offer its products such as term deposit. One of the most important strategy to the success of telemarketing is opting the potential customer to create effective telemarketing. Predicting the success of telemarketing can use machine learning. Gradient boosting is machine learning method with advanced decision tree. Gardient boosting involves many classification trees which are continually upgraded from previous tree. The optimal classification result cannot be separated from the role of the optimal hyperparameter. Hyperopt is Python library that can be used to tune hyperparameter effectively because it uses Bayesian optimization. Hyperopt uses hyperparameter prior distribution to find optimal hyperparameter. Data in this study including 20 independent variables and binary dependent variable which has ‘yes’ and ‘no’ classes. The study showed that gradient boosting reached classification accuracy up to 90,39%, precision 94,91%, and AUC 0,939. These values describe gradient boosting method is able to predict both classes ‘yes’ and ‘no’ relatively accurate.

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Dumitrache, Andreea, Denisa Melian, Delia Bălăcian, Alexandra Nastu et Stelian Stancu. « Churn prepaid customers classified by HyperOpt techniques ». Proceedings of the International Conference on Applied Statistics 2, n^o 1 (1 décembre 2020) : 139–51. http://dx.doi.org/10.2478/icas-2021-0013.

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Abstract The telecommunications industry is representative when it comes to a country’s economy. In this industry, the customer plays a very important role in maintaining a stable income. The churn customer is one of the most important concerns for large companies. This increased attention is due to its direct effect on the revenues of large companies in the telecommunications industry, companies being in a constant search to develop ways to predict this type of customer. The aim of our paper is to identify potential customers at risk of churn using modern data mining techniques, often used in the business world. From the nine techniques tested, we choose as the churn prediction model, the technique with the highest performance. The effectiveness of the model is tested and evaluated by the f1-score. The model developed in the paper uses machine learning techniques on the Python platform, exploring a wide range of algorithms from logistic regression and the method of balancing the analyzed data set (Balanced Random Forest) to supervised learning methods (K-Nearest Neighbors, Naive Bayes) and optimization packages (Ligh GBM, CATBoost, ADABoost, RUSBoost, Stochastic Gradient Descent). The techniques analyzed in this paper cover a diverse range of methods that are compared in terms of performance. RUSBoost proves to be the best churn prediction model for telecom customers in this study. RUSBoost has the lowest loss function of all the tested techniques.

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Bergstra, James, Brent Komer, Chris Eliasmith, Dan Yamins et David D. Cox. « Hyperopt : a Python library for model selection and hyperparameter optimization ». Computational Science & ; Discovery 8, n^o 1 (28 juillet 2015) : 014008. http://dx.doi.org/10.1088/1749-4699/8/1/014008.

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Wang, Mohan, Bo Lu et Hao Wang. « Exploring the Market : Used Sailboat Price Estimates Based on Artificial Bee Colony-BP Neural Network ». Highlights in Business, Economics and Management 16 (2 août 2023) : 72–79. http://dx.doi.org/10.54097/hbem.v16i.10539.

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In recent years, the shipping industry's share of world trade has been increasing year by year. As an important part of the shipping market, the accurate price prediction of second-hand sailboats is of great significance to grasping the price factors and improving the social and economic benefits. To accurately predict the price of second-hand sailboats, the artificial bee colony algorithm (ABC) is used to improve the BP neural network model, to solve the problem of overfitting of BP neural network. At the same time, compared with the prediction using Hyperopt improved XGBoost algorithm, the prediction effect of ABC-BP is better, and the fitting coefficient of the prediction results can reach 0.92.

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Yau, Gordon S. K., Jacky W. Y. Lee, Tiffany T. Y. Woo, Raymond L. M. Wong et Ian Y. H. Wong. « Central Macular Thickness in Children with Myopia, Emmetropia, and Hyperopia : An Optical Coherence Tomography Study ». BioMed Research International 2015 (2015) : 1–4. http://dx.doi.org/10.1155/2015/847694.

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Purpose.To investigate the central macular thickness (CMT) in myopic, emmetropic, and hyperopic Chinese children using Optical Coherence Tomography.Methods.168 right eyes of Chinese subjects aged 4–18 were divided into 3 groups based on their postcycloplegic spherical equivalent: myopes (<−1.0 D); emmetropes (≥−1.0 to ≤+1.0 D); and hyperopes (>+1.0 D) and the CMT was compared before/after age adjustment. The CMT was correlated with age, axial length, and peripapillary retinal nerve fibre layer (RNFL).Results.The mean CMT was274.9±50.3 μm and the mean population age was7.6±3.3years. The CMT was thickest in the myopes (283.3±57.3 μm,n=56), followed by the hyperopes (266.2±55.31 μm,n=60) and then emmetropes (259.8±28.7 μm,n=52) (allP<0.0001). When adjusted for age, myopes had a thicker CMT than the other 2 groups (allP<0.0001) but there was no CMT difference between the emmetropes and hyperopes (P>0.05). There was no significant correlation between CMT with age, axial length, or peripapillary RNFL (allP≥0.2).Conclusion.Chinese children with myopia had a thicker CMT than those with emmetropia or hyperopia. There was no correlation of the CMT with age, axial length, or peripapillary RNFL thickness.

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Padmanabhuni, Sri Silpa, et Pradeepini Gera. « EHFT : An Ensembled Hyperopt Fine-Tuned Neural Network for Disease Detection in Tomato Plants ». International Journal on Recent and Innovation Trends in Computing and Communication 11, n^o 9s (31 août 2023) : 634–46. http://dx.doi.org/10.17762/ijritcc.v11i9s.7478.

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The identification of unhealthy plants in the crops at the early stage of cultivation helps for good farming. Unhealthy parts can be recognized using shape, color and texture, which are processed using feature extraction techniques. The feature extraction system stores the images in the matrix pixel format, which requires 3 channels for processing the images. Traditional neural networks utilize backpropagation techniques to adjust the random weights, which requires many resources while extracting a more significant number of features from a huge amount of data. These mechanisms also require more trainable parameters during the transformation of data from one layer to another. The proposed model implements the pre-trained model "RESNET152" (Residual Network), which is efficient for feature extraction and designs the last layer of the network as a "Tuned X-Gradient Boosting" ensemble algorithm for performing the binary classification of tomato leaves. RESNET can reduce computational resources because it implements residual blocks which fasten the learning rate by skipping a few connections in the network. The fine-tuned ensemble model helps the model identify the best parameters quickly. The learnable parameters are the essential elements of any ML model because they can easily identify the patterns associated with the different features. In the proposed model for feature extraction, pattern matching is the crucial step. Therefore, it is very necessary to tune the XGBOOST algorithm. Compared to the traditional approaches, the proposed model enhanced the accuracy performance in training and testing with 98.58% and 95.56%, correspondingly

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Schönning, Karin. « Hyperon Physics with PANDA at FAIR ». EPJ Web of Conferences 241 (2020) : 01015. http://dx.doi.org/10.1051/epjconf/202024101015.

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Hyperons provide new angles on two of the most challenging problems in contemporary physics: a coherent and quantitative description of the strong interaction, and the matter-antimatter asymmetry of the Universe. The production dynamics and the electromagnetic structure of strange hyperons, as well as hyperon spectroscopy, give insights into the strong interaction in the confinement domain. Furthermore, two-body decays of strange hyperons provide clean tests of CP symmetry, an essential piece to the matter-antimatter puzzle. The future experiment PANDA at FAIR offers unique possibilities to study different aspects of hyperons using antiproton beams. In particular, the hitherto almost unexplored multi-strange sector will be addressed. The expected large production cross sections of hyperons and the versatile, near 4 π detector design makes PANDA a veritable hyperon factory already from the first phase of operation. In these proceedings, the opportunities for hyperon physics with PANDA will be outlined. I will also address how we can benefit from the weak hyperon decays, that provide straight-forward access to the full spin density matrix.

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Gallo, Angel, Fabián Pérez et Diego Salinas. « Minería de Datos y Proyección a Corto Plazo de la Demanda de Potencia en el Sistema Eléctrico Ecuatoriano ». Revista Técnica "energía" 18, n^o 1 (29 juillet 2021) : 72–85. http://dx.doi.org/10.37116/revistaenergia.v18.n1.2021.461.

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En este artículo se presenta una herramienta computacional elaborada en lenguaje de programación Python para minería de datos y proyección a corto plazo de la demanda de potencia eléctrica del Sistema Nacional Interconectado (SNI), utilizando el enfoque predictivo del algoritmo de aprendizaje automático Random Forest. La implementación de la función Hyperopt para definir los principales hiperparámetros del algoritmo Random Forest junto con la aplicación de la ingeniería de características permiten ajustar un modelo adecuado de aprendizaje automático para las series de datos. Dicho algoritmo es implementado en tareas de mitigación de valores faltantes y valores atípicos para estructurar bases de datos completos y libres de desviaciones. El procedimiento para minería de datos y proyección de demanda muestra la confiabilidad y versatilidad de utilizar la herramienta computacional obteniendo resultados relevantes, como la disminución de anomalías en las series de datos para mejorar la precisión en las curvas de demanda eléctrica proyectadas.

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Wang, Shuzhi. « Population Prediction Based on Logistic Regression and Random Forest ». Highlights in Science, Engineering and Technology 49 (21 mai 2023) : 496–500. http://dx.doi.org/10.54097/hset.v49i.8601.

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Due to the continuous improvement of quality of life and more stable social environment, the population is growing rapidly. Among them, population forecasting plays an important role in solving the problems brought by population growth. Based on the data indicators such as population, fertility rate and median age in China’s mainland from 1955 to 2022, the logistic regression model is usually used to predict the future population. This model is trained by Hyperopt to obtain the optimal parameters, it can improve the accuracy of the model. In addition, in order to show the differences between different models, this experiment also used random forest model to predict. The experimental results show that the population growth rate will slow down gradually and reach the maximum population in around 2030, after which it will show negative growth. By calculating the mean square error, it shows that the machine learning model can provide learners with accurate population prediction results.

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Song, Ji Eun, Hyo Ji Han, Chul Young Choi, Ramin Khoramnia, Hae Ran Chang et So Young Han. « Comparison of Longitudinal Changes in Refractive Error of Hyperopic Children with or without Refractive Accommodative Esotropia ». Diagnostics 11, n^o 9 (26 août 2021) : 1547. http://dx.doi.org/10.3390/diagnostics11091547.

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We investigated longitudinal changes in the spherical equivalent refractive error (SE) in hyperopic children with or without refractive accommodative esotropia (AccET). A total of 456 patients met the inclusion criteria: 190 (41.7%) in the hyperopic control group and 266 (58.3%) in the AccET group. All patients received at least 3 years of follow-up after spectacle prescription. Subgroups were divided according to age when spectacles were prescribed, presence of amblyopia, or initial SE. Longitudinal changes in SE in children with hyperopia showed a gradual decrease, although SE of younger children with AccET increased over the first 4 years and then decreased thereafter. SE in eye with higher SE was tended to decrease significantly in patient with Acc ET than hyperopic control group (group × time p = 0.015). Amblyopic eyes showed a greater decreased in SE compared with non-amblyopic eyes, but it was not statistically significant (p = 0.07). SE was significantly decreased in children with more hyperopia (≥ 3 D) compared with children with less hyperopia (<3 D) (p = 0.008). Emmetropization of hyperopia was faster in hyperopic patients without AccET and could be affected by the age of the initial spectacles prescription, initial amount of SE, or presence of amblyopia.

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Thèses sur le sujet "HYPEROPT"

Narayanasamy, Sumithira. « Visual demands of modern primary classrooms and the impact of refractive anomalies on academic performance ». Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/84876/9/Sumithira_Narayanasamy_Thesis.pdf.

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This research investigated the visual demands in modern primary school classrooms and also the impact of common refractive anomalies on a child's ability to perform academic-related tasks. The results showed that relatively high levels of visual acuity, contrast demand and sustained accommodative-convergence are required to perform optimally in the modern classroom environment. It was also demonstrated that relatively low magnitudes of uncorrected refractive error may have a detrimental impact on children's ability to perform academic-related activities at school, with sustained near work further exacerbating this effect. These findings have important implications for both eye care practitioners and education authorities.

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Intert, Elisa-Marie [Verfasser], et Toam [Akademischer Betreuer] Katz. « Wirksamkeit, Vorhersagbarkeit und Sicherheit einer erneuten Behandlung nach hyperoper Laser in situ keratomileusis - spielt die verborgene Hyperopie eine Rolle ? / Elisa-Marie Intert ; Betreuer : Toam Katz ». Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://d-nb.info/1186891807/34.

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Huang, Shufeng. « A HyperNet Architecture ». UKnowledge, 2014. http://uknowledge.uky.edu/cs_etds/18.

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Network virtualization is becoming a fundamental building block of future Internet architectures. By adding networking resources into the “cloud”, it is possible for users to rent virtual routers from the underlying network infrastructure, connect them with virtual channels to form a virtual network, and tailor the virtual network (e.g., load application-specific networking protocols, libraries and software stacks on to the virtual routers) to carry out a specific task. In addition, network virtualization technology allows such special-purpose virtual networks to co-exist on the same set of network infrastructure without interfering with each other. Although the underlying network resources needed to support virtualized networks are rapidly becoming available, constructing a virtual network from the ground up and using the network is a challenging and labor-intensive task, one best left to experts. To tackle this problem, we introduce the concept of a HyperNet, a pre-built, pre-configured network package that a user can easily deploy or access a virtual network to carry out a specific task (e.g., multicast video conferencing). HyperNets package together the network topology configuration, software, and network services needed to create and deploy a custom virtual network. Users download HyperNets from HyperNet repositories and then “run” them on virtualized network infrastructure much like users download and run virtual appliances on a virtual machine. To support the HyperNet abstraction, we created a Network Hypervisor service that provides a set of APIs that can be called to create a virtual network with certain characteristics. To evaluate the HyperNet architecture, we implemented several example Hyper-Nets and ran them on our prototype implementation of the Network Hypervisor. Our experiments show that the Hypervisor API can be used to compose almost any special-purpose network – networks capable of carrying out functions that the current Internet does not provide. Moreover, the design of our HyperNet architecture is highly extensible, enabling developers to write high-level libraries (using the Network Hypervisor APIs) to achieve complicated tasks.

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Newbold, David Michael. « Inclusive hyperon polarisation studies at the CERN SPS hyperon beam ». Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265386.

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De, Bie Ellinor. « Prevalensen av hyperopi och astigmatism hos barn med ospecifika läs- och skrivsvårigheter respektive barn med dyslexi ». Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-36016.

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Syfte:Målet med studien var att undersöka om prevalensen av hyperopi (och inducerad hyperopi) och astigmatism skiljer sig mellan barn med dyslexi och barn med ospecifika läs- och skrivsvårigheter. Blir de hjälpta av eventuell korrektion? Metod:Skolpedagoger i Kalmar, Nybro och Mörbylånga lämnade ut inbjudan för synundersökning till barn med läs-och skrivsvårigheter.Synundersökninanra genomfördes på C-optik synklinik i Kalmar.Tjugofyra barn med ospecefika läs- och skrivsvårigheter och nio barn med dyslexi deltog i undersökningen . En tid efter synundersökningen kontaktades förädrar för en uppföljningsintervju. Resultat: Jämförelse mellan grupperna visade ingen skillnad med avseende refraktion. Alla barn som deltog förutom ett, ordinerades korrektion för hyperopi. Ett barn var myopt med inducerad hyperopi. Samtliga barn förutom ett ordinerades korrektion för astigmatism. Efter en tid gjorde ett uppföljnings samtal till föräldrarna. Alla barn förutom ett använde sina glasögon. Många av barnen hade fått minskade besvär som var relaterade till okorrigerade synfel.

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Backrot, Therése. « Prevalensen av refraktionsfel bland hjälpsökande i Guatemala ». Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-35375.

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Bakgrund: Ametropi, som även kallas refraktionsfel, är vanligt förekommande runt om i världen och många människor är i behov av att bli korrigerade med hjälp av glasögon. Ametropi delas in i tre kategorier myopi, hyperopi och astigmatism. Syfte: Syftet med den här studien är att under en resa med hjälporganisationen Vision for All (VFA) till Guatemala undersöka prevalensen av refraktionsfel bland de hjälpsökande och jämföra resultatet med tidigare prevalensstudier från andra delar av världen. Material och metod: Studien genomfördes i april 2014 under en resa med Vision for All till Guatemala. Under resan besöktes sju orter, tre orter runt staden Antigua Guatemala och fyra orter i regionen Petén. Befolkningen sökte självmant till undersökningsstationerna där synscreening utfördes med hjälp av flipprar, provlådor, provbågar och syntavlor med optotyper och Snellen E-hake. Undersökningarna utfördes av sex optikerstudenter och en legitimerad optiker. Glasögon delades ut till de hjälpsökande som var i behov av korrektion av tre optikerassistenter. Resultaten från samtliga undersökningar journalfördes och jämfördes med resultat från tidigare prevalensstudier från andra delar av världen. Resultat: I studien ingår 1 171 hjälpsökande i åldrarna 6–92 år. Definitionen av myopi är i den här studien SE ≤ -0,50 D och hyperopi SE ≥ +0,50 D. De gränserna valdes för att det oftast är de definitionerna som använts i tidigare studier. Prevalensen av myopi bland de hjälpsökande var i den här studien 15 % och hyperopi var 39 %. I orterna runt Antigua Guatemala undersöktes 344 personer, 30 % var myopa och 19 % hyperopa. I regionen Petén undersöktes 827 personer, 9 % var myopa och 47 % hyperopa. Studien visade att det inte var någon signifikant skillnad på prevalensen av refraktionsfel mellan män och kvinnor. Slutsats: Resultatet från den här studien visar att prevalensen av hyperopi är högre än prevalensen av myopi i Guatemala. Samma resultat kan ses i tidigare studier från Nigeria och Mongoliet. Studier från USA och större delen av Europa visar på motsatsen, prevalensen av myopi är högre än prevalensen av hyperopi.

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Noble, Anthony James. « A measurement of the branching ratio for the weak radiative decay of the lambda hyperon ». Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/31075.

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In a measurement performed at the Brookhaven National Laboratory we have measured the branching ratio for the weak radiative decay of the ∧ hyperon. Our result, [formula omitted] is the second, but most precise, measurement of this quantity. It is in slight disagreement with the earlier measurement. Using a thick copper degrader, kaons of initial momentum 680 MeV/c were brought to rest in a liquid hydrogen target. Absorption of these kaons on target protons produced a ∧, either directly via the reaction K⁻p —> ∧ + π⁰, or indirectly via the reaction K⁻p —> Ʃ° + π° with subsequent decay, Ʃ° —> ∧ + [formula omitted]. The occurrence of each of these processes was established by observing the π° decay photons in a modular NaI detector, the Crystal Box. This detector was used to measure the energy and position of the final state particles, and hence allowed the topology of the event to be reconstructed. A wide range of theoretical techniques have been employed to estimate hyperon weak radiative decay amplitudes, including pole models, symmetry arguments, PCAC, and direct quark level calculations. These calculations must combine facets of the strong, weak and electromagnetic interactions. Hence, hyperon decays provide a testing ground for theorists to measure their ability to bring together these components in a relatively simple system. We discuss the implications of our result for a representative selection of theoretical estimates.
Science, Faculty of
Physics and Astronomy, Department of
Graduate

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Wogatai, Ulrika. « Förekomst av hyperopi bland hjälpsökande på en VFA-resa i Bolivia ». Thesis, Linnaeus University, School of Natural Sciences, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-6076.

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Syfte: Att undersöka förekomst av hyperopi i förhållande till läskunnighet hos hjälpsökande hos VFA i Bolivia, samt jämföra med studier från andra delar av världen.

Metod: Studien utfördes i april 2010 på tre olika orter i centrala Bolivia. Patienterna sökte själva upp platsen för att få en undersökning. Subjektiv refraktion utfördes binokulärt, utan dimning, med hjälp av provbåge, provlåda och syntavla med Snellen E, uppsatt på 5 meters avstånd. Hyperopi räknades som sfärisk ekvivalent ≥ +1,00 D, myopi som ≤ –0,25 DS.

Resultat: 1 313 personer undersöktes, varav 1 271, mellan 6 och 92 år gamla, ingick i studien. Förekomsten av hyperopi var totalt 23,8% (som mest 39,8% hos kvinnor 66-92 år gamla, och som minst 10,7% hos kvinnor 6-19 år gamla), läskunnighet totalt var 81,7% (kvinnor 74,7%, män 90,7%). Det var något lägre läskunnighet bland hyperoper (78,1%) än bland myoper (83,2%) och emmetroper (82,7%).

Slutsats: Bolivia verkar ha större förekomst av hyperopi än Asien och Europa. Hyperopi ökar med åldern, främst efter 50-årsåldern. Miljöfaktorn ser ut att ha viss betydelse.

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Finnman, Louise. « Förekomsten av refraktionsfel hos befolkningen mellan 10-35 år i Guatemala ». Thesis, Linnéuniversitetet, Institutionen för medicin och optometri (MEO), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-53889.

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Syfte: Syftet med studien var att undersöka förekomsten av hyperopi och myopi hos personer mellan 10-35 år i Guatemala. Samt att undersöka förekomsten av refraktionsfel bland olika yrkesgrupper. Material och metod: Studien utfördes från den 28 mars till 9 april i Guatemala under en resa med Vision For All. De insamlade mätvärdena kommer från orterna runt Antigua och Alta Verapaz. En subjektiv binokulär refraktion genomfördes på patienterna där sfärisk ekvivalens tillämpades. Refraktionsfelen definierades som hyperopi SE ≥ +0,75 D och myopi SE ≤ -0,75 D. Utrustningen som användes bestod av flipprar (+1,00 till +2,50 D),visustavla med Snellen E-hakar, provglaslåda, provbåge och journalblad. Resultat: 503 personer (311 kvinnor och 192 män) i åldrarna 10-35 år deltog. Förekomsten av hyperopi var störst på 30 %, myopi 19 % och emmetropi 51 %. Myopiförekomsten var högst i åldersgruppen 16-20 år på 27 %. Det vanligaste refraktionsfelet efter arbete var hyperopi. Slutsats: Resultatet från studien visade en högre förekomst av hyperopi än myopi hos befolkningen mellan 10-35 år i Guatemala. Det vanligast förekommande synfelet i samtliga yrkesgrupper var hyperopi. Tidigare studier från Central- och Sydamerika visar på liknande resultat med högst förekomst av hyperopi.
Purpose: The aim of this study was to examine the prevalence of hyperopia and myopia among people aged 10-35 years in Guatemala. Also to investigate the prevalence of refractive errors in various occupational groups. Methods: The study was conducted from March 28 to April 9 during a journey with Vision For All. The measurements were performed in the area around Antigua and Alta Verapaz with binocular subjective refraction. Spherical equivalent refractive errors were used to quantify ametropia. The ametropia was defined as hyperopia SE > +0,75 D and myopia SE < -0,75 D. The equipment used consisted of flippers (+1,00 to +2,50 D), Snellen Eye Chart with tumbling E, trial lenses, trial frame and protocol. Results: 503 people participated (311 women and 192 men) aged 10-35 years. The prevalence of hyperopia was highest at 30 %, 19 % had myopia and 51 % had emmetropia. The incidence of myopia was highest in the age group between 16-20 years at 27 %. The most common refractive error associated with occupation was hyperopia. Conclusions: The results showed a higher prevalence of hyperopia than myopia among the population aged 10-35 years in Guatemala. The most common refractive error in the various occupational groups was hyperopia. Similar results with a higher prevalence of hyperopia can be seen in earlier studies from Central- and South America.

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Acha, Armando R. « Electroproduction of hyperons at low momentum transfer ». FIU Digital Commons, 2011. http://digitalcommons.fiu.edu/etd/1133.

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A high resolution study of the H(e,e'K+)Λ,Σ0 reaction was performed at Hall A, TJNAF as part of the hypernuclear experiment E94-107. One important ingredient to the measurement of the hypernuclear cross section is the elementary cross section for production of hyperons, Λ and Σ0. This reaction was studied using a hydrogen (i.e. a proton) target. Data were taken at very low Q2 (∼0.07 (GeV/c)2) and W∼2.2 GeV. Kaons were detected along the direction of q, the momentum transferred by the incident electron (θCM~6°). In addition, there are few data available regarding electroproduction of hyperons at low Q2 and θCM, and the available theoretical models differ significantly in this kinematical region of W. The measurement of the elementary cross section was performed by scaling the Monte Carlo cross section (MCEEP) with the experimental-to-simulated yield ratio. The Monte Carlo cross section includes an experimental fit and extrapolation from the existing data for electroproduction of hyperons. Moreover, the estimated transverse component of the electroproduction cross section of H(e,e'K+)Λ was compared to the different predictions of the theoretical models and exisiting data curves for photoproductions of hyperons. None of the models fully describe the cross-section results over the entire angular range. Furthermore, measurements of the Σ0/Λ production ratio were performed at θCM, where data are not available. Finally, data for the measurements of the differential cross sections and the Σ0/Λ production were binned in Q2, W and θCM to understand the dependence on these variables. These results are not only a fundamental contribution to the hypernuclear spectroscopy studies but also an important experimental measurement to constrain existing theoretical models for the elementary reaction.

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Livres sur le sujet "HYPEROPT"

Akasegawa, Genpei. Hyperart : Thomasson. New York : Kaya Press, 2009.

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Matt, Fargo, dir. Hyperart : Thomasson. New York : Kaya Press, 2009.

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Akasegawa, Genpei. Hyperart : Thomasson. New York : Kaya Press, 2009.

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A, Sher Neal, dir. Surgery for hyperopia. Thorofare, NJ : Slack Inc., 2004.

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1944-, Kielanowski P., dir. The beta decay of hyperons. Berlin : Springer-Verlag, 1985.

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Bohm, A., dir. The Beta Decay of Hyperons. Berlin, Heidelberg : Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/3-540-15184-2.

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Hessey, Nigel P. A study of some hyperon radiative decays. Birmingham : University of Birmingham, 1988.

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KEK), TRIUMF/KEK Workshop on Hypernuclear Physics at KAON (1989. Proceedings of TRIUMF/KEK Workshop on Hypernuclear Physics at KAON : June 17-18, 1989, KEK, Tsukuba. Tsukuba-shi Ibaraki-ken, Japan : National Laboratory for High Energy Physics, 1989.

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International, Conference on Hyperons Charm and Beauty Hadrons (4th 2000 Valencia Spain). Hyperons, charm and beauty hadrons : Proceedings of the 4th International Conference on Hyperons, Charm and Beauty Hadrons : Palcio de congressos, Valencia, Spain, 27-30 June 2000. [Amsterdam] : North-Holland, 2001.

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1938-, Gibson B. F., Barnes Peter D, Nakai K. 1934- et U.S./Japan Seminar on the Hyperon-Nucleon Interaction (1993 : Maui, Hawaii), dir. Properties & interactions of hyperons : Proceedings of the U.S.-Japan Seminar, Maui, Hawaii, 25-28 Oct. 1993. Singapore : World Scientific, 1994.

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Chapitres de livres sur le sujet "HYPEROPT"

Komer, Brent, James Bergstra et Chris Eliasmith. « Hyperopt-Sklearn ». Dans Automated Machine Learning, 97–111. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05318-5_5.

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Omkari, D. Yaso, et Snehal B. Shinde. « Cardiovascular Disease Prediction Using Machine Learning Techniques with HyperOpt ». Dans Communication and Intelligent Systems, 585–97. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2322-9_44.

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Klaproth, Oliver K., et Thomas Kohnen. « Hyperopia ». Dans Encyclopedia of Ophthalmology, 1–3. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-35951-4_381-4.

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Klaproth, Oliver K., et Thomas Kohnen. « Hyperopia ». Dans Encyclopedia of Ophthalmology, 909–11. Berlin, Heidelberg : Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_381.

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Metze, Dieter, Vanessa F. Cury, Ricardo S. Gomez, Luiz Marco, Dror Robinson, Eitan Melamed, Alexander K. C. Leung et al. « Hyperopia ». Dans Encyclopedia of Molecular Mechanisms of Disease, 913–14. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_8830.

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Gooch, Jan W. « Hyperon ». Dans Encyclopedic Dictionary of Polymers, 378. New York, NY : Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6173.

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Haeussler-Sinangin, Yesim, et Thomas Kohnen. « Hyperopic Shift ». Dans Encyclopedia of Ophthalmology, 1–2. Berlin, Heidelberg : Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-35951-4_435-4.

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Haeussler-Sinangin, Yesim, et Thomas Kohnen. « Hyperopic Shift ». Dans Encyclopedia of Ophthalmology, 911. Berlin, Heidelberg : Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_435.

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Bryant, Peter T. « Problem-Solving ». Dans Augmented Humanity, 103–37. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76445-6_4.

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AbstractHuman and artificial agents are both intelligent problem solvers. Therefore, problem-solving will be central to their collaboration. Among notable developments in this domain is the capability for artificial agents to sample and search in a very farsighted fashion, or to be hyperopic, which is the technical term for farsighted vision, the opposite of myopia. This inverts the dominant concern of prior theory, which focuses on limited, bounded capabilities in problem-solving and decision-making. This shift poses significant opportunities and risks for augmented agents. Human processing will likely remain naturally myopic and limited, while artificial processing is increasingly hyperopic and powerful. Given these differences, digitally augmented problem-solving could be extremely divergent and dysfunctional, for example, by sampling and searching in a hyperopic fashion, while guided by persistent human myopia. Alternatively, one agent might dominate the other, leading to extreme convergence and possibly the digital domination of problem-solving.

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Rijken, Th A. « The Soft-Core Nijmegen Hyperon-Nucleon and Hyperon-Hyperon Interactions ». Dans Few-Body Problems in Physics ’99, 317–23. Vienna : Springer Vienna, 2000. http://dx.doi.org/10.1007/978-3-7091-6287-3_55.

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Actes de conférences sur le sujet "HYPEROPT"

Komer, Brent, James Bergstra et Chris Eliasmith. « Hyperopt-Sklearn : Automatic Hyperparameter Configuration for Scikit-Learn ». Dans Python in Science Conference. SciPy, 2014. http://dx.doi.org/10.25080/majora-14bd3278-006.

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Schulz, Daniel, Marcelo Marotta, Lucas Bondan, Geraldo P. Rocha Filho, Marcos Caetano et Aleteia Araujo. « Detecção de Indisponibilidades em Aplicações Web ». Dans Escola Regional de Alto Desempenho do Centro-Oeste. Sociedade Brasileira de Computação - SBC, 2023. http://dx.doi.org/10.5753/eradco.2023.234679.

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The internet's growth transformed business services but also brought challenges with failures in Information Systems. Stable operations require continuous monitoring aligned with ITIL. This study suggests a novel method, applying data mining for rapid failure detection. It evaluates real-time web analytics data to swiftly identify critical web app failures. Preprocessing and hyperparameters were optimized using hyperopt for improve accuracy. Seven models were made; LSTM excelled, validating its effectiveness in differentiating failures from successes.

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Bergstra, James, Dan Yamins et David Cox. « Hyperopt : A Python Library for Optimizing the Hyperparameters of Machine Learning Algorithms ». Dans Python in Science Conference. SciPy, 2013. http://dx.doi.org/10.25080/majora-8b375195-003.

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Yang, Haolin. « Wildfire Detection and Perimeter Mapping using Satellite Imagery and Machine Learning with Hyperopt Tuning ». Dans CSSE 2022 : 2022 5th International Conference on Computer Science and Software Engineering. New York, NY, USA : ACM, 2022. http://dx.doi.org/10.1145/3569966.3570097.

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Putatunda, Sayan, et Kiran Rama. « A Comparative Analysis of Hyperopt as Against Other Approaches for Hyper-Parameter Optimization of XGBoost ». Dans the 2018 International Conference. New York, New York, USA : ACM Press, 2018. http://dx.doi.org/10.1145/3297067.3297080.

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Wong, S. T., J. G. Sivak, A. K. Bal, M. G. Callender et A. J. Bakelaar. « Changes in Amacrine Cell Numbers and Morphology in Response To Induced Myopia and Hyperopia ». Dans Vision Science and its Applications. Washington, D.C. : Optica Publishing Group, 1998. http://dx.doi.org/10.1364/vsia.1998.suc.2.

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Myopia and hyperopia have been artificially induced in animal models by various manipulations of their early visual environment. Ametropias have been produced using lid suture1, changing illumination levels (dark-rearing2, constant light3, dim lighting4), intra-ocular injections5, treatment with defocussing lenses6, and the application of translucent occluders7. Abnormal ocular growth appears to be a major factor that causes ametropia. Myopic eyes are enlarged, while hyperopic eyes are smaller compared to control eyes. Changes in the sclera8, choroid9, and orbital bone10 surrounding the affected eyes also reflect abnormal growth mechanisms. Various studies11,12,13 suggest that the signal or signals which control eye growth may arise from within the retina itself. It has been suggested that retinal amacrine cells play a role in mediating ocular growth8. This study examines how dopaminergic and serotonergic amacrine cells are quantitatively and qualitatively affected by induced myopia and hyperopia.

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Sivak, Jacob G., Elizabeth L. Irving, Margot E. Andison et Murchinson Callender. « Inducing refractive errors in birds ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.tuy1.

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Numerous studies have shown that depriving the eye of the young chicken of clear form vision always results in myopia. Deprivation is usually achieved by the use of a translucent goggle over one eye. However, manipulation of the early visual environment of birds does not always produce myopia. The application of lenses to produce positive and negative defocus of the image of the young chick eye results in the formation of hyperopia and myopia, respectively. Preliminary results show that astigmatic defocus can produce astigmatic refractive states. Also, the application of a translucent goggle to the eye of the young American kestrel (Falco sparverius) produces both hyperopia and myopia, although myopia predominates. Furthermore, the normal hatchling kestrel eye is myopic and not hyperopic as is the hatchling chick. Hence, emmetropia is approached from opposite directions in these two species during the first few days after hatching. These results indicate that models of refractive error development of the bird eye should be able to account for all refractive conditions.

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WHITE, CHRISTOPHER. « HYPERCP, A SEARCH FOR CP VIOLATION IN HYPERON DECAY ». Dans Proceedings of the Nineteenth Lake Louise Winter Institute. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812701961_0053.

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Lane, Ben C. « Diet-responsive blood-indexed risk factor for high myopia ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.tuy24.

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Previously 1 reported highly significant depression of the chromium-to-vanadium ratio in the nape hair of patients with myopia. It is associated with depressed accommodation and elevated intraocular pressure, both of which are associated with depression of insulin potentiation of glucose uptake by ciliary-muscle insulin receptors.1,2 In this double-masked cohort-panel study, chromium (Cr) and vanadium (V) were measured in red blood cells (erythrocytes). Of the first 184 patients, 27 were myopic (3 diopters) and 14 were hyperopic (1.25 diopter). I excluded patients less than 20 years old, patients taking chromium supplements, patients taking 1 g or more of ascorbic acid per day, aphakic patients, and patients with cataracts. Erythrocytechromium/erythrocytevanadi um (ECr/EV) ratios and ECr distributions and means were significantly lower in the patients with miopia than in the patients with hyperopia: mean SD ECr/EV = 0.150 0.150 for the myopic patients versus 0.731 0.472 for the hyperopic patients (t = 4.488, p), and ECr = 70.1 53.9 ng/ml for the myopic patients and 256.7 160.0 for the hyperopic patients. Foods rich in chromium include most unprocessed naturally sweet or starchy foods. Foods rich in vanadium include chocolate, kelp, mushrooms, most U.S. chow-fed poultry, and seafood larger than herring. To my knowledge, this is the first report of this red-blood-cell-indexed effect on human refractive development.

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Munger, Rejean, Evanne J. Casson et W. Bruce Jackson. « Topography and optical performance of the cornea following hyperopic Excimer PRK ». Dans Vision Science and its Applications. Washington, D.C. : Optica Publishing Group, 1997. http://dx.doi.org/10.1364/vsia.1997.fc.1.

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Visual performance after refractive surgery depends critically on the optical quality of the post-operative cornea. To understand subtle visual problems that cannot be corrected by optical means we must go beyond the paraxial refractive power of the cornea and fully characterize its optical properties. Research is also required into the relationship between the shape of the cornea and visual performance after PRK. As a first step towards a better description of the optical characteristics of PRK corneas we are developing ray tracing methods, which use corneal topography as the surface descriptor, to calculate their optical properties. The Eye Institute is also involved in a pilot study to evaluate the VISX “STAR” Excimer laser for PRK treatment of hyperopia. In this paper we present data on (a) corneal optical quality, (b) corneal topography (ablation profile), and (C) visual acuities for 2 patients followed for 6 months after a hyperopic Excimer PRK surgery.

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Rapports d'organisations sur le sujet "HYPEROPT"

Baltz A. J., R. Fries, H. Z. Huang, J. Millener et Z. Xu. Proceedings of RIKEN BNL Research Center Workshop : Hyperon-Hyperon Interactions and Searches for Exotic Di-Hyperons in Nuclear Collisions. Office of Scientific and Technical Information (OSTI), mars 2012. http://dx.doi.org/10.2172/1052306.

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Cooper, P. S. Hyperon beam physics. Office of Scientific and Technical Information (OSTI), mars 1996. http://dx.doi.org/10.2172/212678.

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Ziegler, Veronique, et /Iowa U. Hyperon AND Hyperon Resonance Properties From Charm Baryon Decays At BaBar. Office of Scientific and Technical Information (OSTI), juillet 2007. http://dx.doi.org/10.2172/909548.

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Chang, Darwin. Challenges in Hyperon Decays. Office of Scientific and Technical Information (OSTI), novembre 2000. http://dx.doi.org/10.2172/784788.

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Chang, Darwin. Challenges in Hyperon Decays. Office of Scientific and Technical Information (OSTI), novembre 2000. http://dx.doi.org/10.2172/784818.

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Barnes, P. D., P. Birien, B. E. Bonner, W. Breunlich, G. Diebold, W. Dutty, R. A. Eisenstein, G. Ericsson, W. Eyrich et R. von Frankenberg. Hyperon production with antiprotons. Office of Scientific and Technical Information (OSTI), janvier 1989. http://dx.doi.org/10.2172/5897900.

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Joseph T. Lach. E781 Hyperon Spectrometer Constants. Office of Scientific and Technical Information (OSTI), mai 2004. http://dx.doi.org/10.2172/823428.

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Romanov, Dmitry. Correlation Femtoscopy of Hyperons Produced in Interactions of Hyperons with Nuclei with 600 GeV Energy. Office of Scientific and Technical Information (OSTI), juin 2010. http://dx.doi.org/10.2172/1018732.

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Price, John. Photoproduction of Multiply-Strange Hyperons at CLAS. Office of Scientific and Technical Information (OSTI), août 2016. http://dx.doi.org/10.2172/1311917.

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Vorobyov, A. ,., E. Jastrzembski, J. Lach, J. Marriner, V. Golovtsov, A. Krivshich, V. Schegelsky et al. An electroweak enigma : Hyperon radiative decays. Office of Scientific and Technical Information (OSTI), avril 1985. http://dx.doi.org/10.2172/15011501.

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