Instance recognition is rapidly advanced along with the developments of various deep convolutional neural networks. Compared to architectures networks, training process, which also crucial success detectors, has received relatively less attention. In this work, we carefully revisit standard practice and find that detection performance often limited by imbalance during generally consists in thre...

For several years, marketplaces exist in the software industry, where customers can, for instance, search for specific services offered by different vendors, review, buy and use these services. The vendor-sided characteristics of these marketplaces are widely discussed but have not yet been investigated in detail. In this paper, we consider online marketplaces and the participants as part of a ...

Long-tailed class distributions are prevalent among the practical applications of object detection and instance segmentation. Prior work in long-tail segmentation addresses imbalance losses between rare frequent categories by reducing penalty for a model incorrectly predicting label. We demonstrate that heavily suppressed correct background predictions, which reduces probability all foreground ...

Existing instance segmentation models mostly pay less attention to the targeted characteristics of ships in synthetic aperture radar (SAR) images, which hinders further accuracy improvements, leading poor performance more complex SAR image scenes. To solve this problem, we propose a hybrid task cascade plus (HTC+) for better ship segmentation. Aiming at specific task, seven techniques are propo...

After the initial design of a portfolio the fund manager is constantly confronted with the following decision problem of Portfolio Re-Optimization: Due to changes on the market the given portfolio has become infeasible because of violations to the investment guidelines and/or sub-optimal due to under-performance with respect to yield, risk etc. In this daily situation the fund manager has to re...

10.1056/nejmp1113618 nejm.org e1(1) ulation of only commercial activity, not inactivity, and thus gives Congress no power to force individuals to buy a product. They argue that if the Supreme Court were to hold otherwise, then Congress could force us all to buy anything, from General Motors cars to broccoli. This claim is a red herring, however, because Congress could force precisely the same p...