python program related to information retrieval and web search

Problem 1 [30 points]. Write a (Python) program that preprocesses a

collection of documents using the recommendations given in the

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Text Operations lecture. The input to the program will be a directory

containing a list of text files. Use the files from assignment #3 as

test data as well as 10 documents (manually) collected from news.yahoo.com .

The yahoo documents must be converted to text before using them.

Remove the following during the preprocessing:

– digits

– punctuation

– stop words (use the generic list available at …ir-websearch/papers/english.stopwords.txt)

– urls and other html-like strings

– uppercases

– morphological variations

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