Recent outstanding results of supervised object detection in competitions and challenges are often associated with specific metrics and datasets. The evaluation of such methods applied in different contexts have increased the demand for annotated datasets. Annotation tools represent the location and size of objects in distinct formats, leading to a lack of consensus on the representation. Such a scenario often complicates the comparison of object detection methods. This work alleviates this problem along the following lines: (i) It provides an overview of the most relevant evaluation methods used in object detection competitions, highlighting their peculiarities, differences, and advantages; (ii) it examines the most used annotation formats, showing how different implementations may influence the assessment results; and (iii) it provides a novel open-source toolkit supporting different annotation formats and 15 performance metrics, making it easy for researchers to evaluate the performance of their detection algorithms in most known datasets. In addition, this work proposes a new metric, also included in the toolkit, for evaluating object detection in videos that is based on the spatio-temporal overlap between the ground-truth and detected bounding boxes.
The prevalence of primary hyperhidrosis among medical students of Manaus was 5.5%. There is a positive non-statistical relationship with overweight and obesity. It was further noted an observational relationship with stress.
The control of a stochastic system with unknovn paraPeters is considered. A navel cost function which includes the variance of the innwations process ia used to optimize the performance of the system. The cost function has two parts: One that reflects the goal of regulating the output and the second one t h a t r e f l e c t s the need to gather as much information as possible about the paraneters of the system, the latter being represented by the variance of the imwations process. The control law derived has an explicit solution that allovs for an easy implementatim, and has dual propert i e s . The relationships among the controller obtained i n this paper and the certainty equivalence and cautious c o n t r o l l e r s a r e a n a l i z e d . S h l a t i o n r e s u l t s show the quasi-optimal performance of the new controller.
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