Information Retrieval - ad-teaching.infor...

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Octave 4/5• Sparse matrices– Our term-document matrices are very sparse, that isnnz
Octave 5/5• Vectors of strings– Re<strong>ad</strong> file with one string per line into Octave like thisA = {};file = fopen("words.txt");i = 1;while trueline = fgetl(file);if line == -1, break; endif;A(1, i) = line;i++;endwhile– With Octave version ≥ 3.4, easier with textre<strong>ad</strong> ...23
Page 1 and 2: Information RetrievalWS 2012 / 2013
Page 3 and 4: Experiences with ES#7 (cookies, UTF
Page 5 and 6: Synonyms 1/4• Problem: another so
Page 7 and 8: Synonyms 3/4• Solution 2: Track u
Page 9 and 10: Latent Semantic Indexing 1/9• An
Page 11 and 12: Latent Semantic Indexing 3/9• If
Page 13: Latent Semantic Indexing 5/9• Eig
Page 17: Latent Semantic Indexing 8/9• Wit
Page 20 and 21: Octave 2/5• Use the Octave shell
Page 24: References• Further reading- Text

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