Extract meta concepts through co-occurrences analysis and graph theory

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So what I did is the following (be aware that is not the formal implementation of LSA!):

1. Filter and take the base form of the words as usual.
2. Build the multidimensional sparse matrix of the co-occurrences;
3. I calculated for each instance the frequency to find it in the corpus;
4. I calculated for each instance the frequency to find it in the doc;
5. I weighted such TF-IDF considering also the distance among the…

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