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- W2604920557 abstract "We present an in-depth formal and empirical comparison of unsupervised signal combination approaches in the context of tasks based on textual similarity. Our formal study introduces the concept of Similarity Information Quantity, and proves that the most salient combination methods are all estimations of Similarity Information Quantity under different statistical assumptions that simplify the computation. We also prove a Minimal Voting Performance theorem stating that, under certain plausible conditions, estimations of Information Quantity should at least match the performance of the best measure in the set. This explains, at least partially, why unsupervised combination methods perform robustly. Our empirical analysis compares a wide range of unsupervised combination methods in six different Information Access tasks based on textual similarity: Document Retrieval and Clustering, Textual Entailment, Semantic Textual Similarity, and the automatic evaluation of Machine Translation and Summarization systems. Empirical results on all datasets corroborate the result of the formal analysis and help establishing recommendations on which combining method to use depending on nature of the set of measures to be combined." @default.
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- W2604920557 date "2017-01-01" @default.
- W2604920557 modified "2023-09-24" @default.
- W2604920557 title "A Formal and Empirical Study of Unsupervised Signal Combination for Textual Similarity Tasks" @default.
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- W2604920557 doi "https://doi.org/10.1007/978-3-319-56608-5_29" @default.
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