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Search Results: 1 - 2 of 2 matches for " Avihai Mandelblit "
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Lawfare: The Legal Front of the IDF
Avihai Mandelblit
Military and Strategic Affairs , 2012,
Abstract: Lawfare is closely linked to the theme of this issue of Military and Strategic Affairs: the challenges facing the regular armies of law-abiding nations engaged in asymmetrical confrontations in densely populated civilian urban areas. Therefore, as part of its preparations for the challenges it may have to face in the future, particularly in this type of fighting, the IDF must give the proper weight to the legal front that is likely to develop as an integral part of the same confrontation.
Confidence Estimation in Structured Prediction
Avihai Mejer,Koby Crammer
Computer Science , 2011,
Abstract: Structured classification tasks such as sequence labeling and dependency parsing have seen much interest by the Natural Language Processing and the machine learning communities. Several online learning algorithms were adapted for structured tasks such as Perceptron, Passive- Aggressive and the recently introduced Confidence-Weighted learning . These online algorithms are easy to implement, fast to train and yield state-of-the-art performance. However, unlike probabilistic models like Hidden Markov Model and Conditional random fields, these methods generate models that output merely a prediction with no additional information regarding confidence in the correctness of the output. In this work we fill the gap proposing few alternatives to compute the confidence in the output of non-probabilistic algorithms.We show how to compute confidence estimates in the prediction such that the confidence reflects the probability that the word is labeled correctly. We then show how to use our methods to detect mislabeled words, trade recall for precision and active learning. We evaluate our methods on four noun-phrase chunking and named entity recognition sequence labeling tasks, and on dependency parsing for 14 languages.
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