Winning aggressive social encounters can enhance the probability of future victories. This so-called winner effect occurs in diverse species and is thought to be an intrinsic phenomenon mediated by postencounter hormone release. Yet, recent evidence suggests the possibility that certain extrinsic factors also influence the winner effect’s formation within an individual, possibly by affecting th...

We investigate the problem of winner determination from computational social choice theory in the data stream model. Specifically, we consider the task of summarizing an arbitrarily ordered stream of n votes on m candidates into a small space data structure so as to be able to obtain the winner determined by popular voting rules. As we show, finding the exact winner requires storing essentially...

In this paper, we propose a winner-take-all method for learning hierarchical sparse representations in an unsupervised fashion. We first introduce fully-connected winner-take-all autoencoders which use mini-batch statistics to directly enforce a lifetime sparsity in the activations of the hidden units. We then propose the convolutional winner-take-all autoencoder which combines the benefits of ...