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Quick and Reliable Document Alignment via TF/IDF weighted Cosine Distance

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Table 1: Runtime details for generation of 971Mpairwise cosine similarity features for n-grams ofsize {1, 3, 5} on virtualhospice.ca.N-grams which occur fewer than 2 times are filteredfrom the corpus.Single-threaded execution on2.66Ghz Xeon CPU.
Figure 1:Recall on training set using varyingminimum counts of n-grams in the corpus.N-grams seen fewer times than the threshold are ig-nored when building the document vectors.
Figure 2: Difference in accumulated cosine dis-tances between greedy and optimal algorithm
Table 2:Recall on train (left) and dev (right) split of the training data using different tf/idf weightingschemes and only untranslated text.
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