Literatura académica sobre el tema "Reproducability"

Abstract Semi-automated segmentation algorithms hold promise for improving extraction and identification of objects in images such as tumors in medical images of human tissue, counting plants or flowers for crop yield prediction or other tasks where object numbers and appearance vary from image to image. By blending markup from human annotators to algorithmic classifiers, the accuracy and reproducability of image segmentation can be raised to very high levels. At least, that is the promise of this approach, but the reality is less than clear. In this paper, we review the state-of-the-art in semi-automated image segmentation performance assessment and demonstrate it to be lacking the level of experimental rigour needed to ensure that claims about algorithm accuracy and reproducability can be considered valid. We follow this review with two experiments that vary the type of markup that annotators make on images, either points or strokes, in tightly controlled experimental conditions in order to investigate the effect that this one particular source of variation has on the accuracy of these types of systems. In both experiments, we found that accuracy substantially increases when participants use a stroke-based interaction. In light of these results, the validity of claims about algorithm performance are brought into sharp focus, and we reflect on the need for a far more control on variables for benchmarking the impact of annotators and their context on these types of systems.

There are several methods of information convenient for natural science education, including press and television. The author checks the information which was published on the TV show and press by Rūta Janutienė, concerning the bread contamination with high stability toxin glyphosate. This herbicide is used to sprey the crop. The article provides information about the worldwide scientific research in order to investigate the effect of toxic glyphosate on humans and the environment. The conclusion is drawn about the negative influence of glyphosate on the reproducability. The author proves that journalist Rūta Janutienė has touched an essential contemporary ecological issue. Key words: natural science information, herbicide, assessment of toxicity, reproducibility.