12 Questions
What is the purpose of stop word filtering in text preprocessing?
Removing unnecessary words from the text
Which tool can be used to create a document vector table for all the documents in the corpus?
Bag of Words
In the context of the corpus, what does 'TFIDF' stand for?
Term Frequency-Inverse Document Frequency
What is the purpose of Lemmatisation in text analysis?
Reducing words to their base form
What is the purpose of tokenisation in text normalisation?
To divide the sentences into words, numbers, and special characters
Why are stopwords removed in the text normalisation process?
Stopwords do not contribute significantly to the meaning of the text
In text normalisation, what is the purpose of sentence segmentation?
To separate the whole corpus into individual sentences
What is the main advantage of working on a corpus after tokenisation compared to before?
Efficient processing of individual elements like words and numbers
In the context of creating document vectors, what is the purpose of the step 'Create Dictionary'?
To identify unique words across all documents
How does text normalisation affect the data before creating document vectors?
It converts all words to lowercase
What does a value of '1' under a word in a document vector indicate?
The word occurs exactly once in the document
Why is it important to increment the value by 1 for a word that appears more than once in a document?
To differentiate between words with different frequencies
Challenge yourself with a stop word filtering exercise using a provided corpus of text documents. Practice your skills in removing unnecessary words from text using the knowledge gained in the exercises above. Analyze and process the given corpus to filter out stop words.
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