Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Stop Word Filtering Exercise with Corpus Documents

12 Questions

1 Views

Stop Word Filtering Exercise with Corpus Documents

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the purpose of stop word filtering in text preprocessing?

Removing any special characters from the text

Converting all text to lowercase

Removing unnecessary words from the text (correct)

Correcting spelling mistakes in the text

Which tool can be used to create a document vector table for all the documents in the corpus?

Tokenisation

Bag of Words (correct)

Sentence Segmentation

Stemming

In the context of the corpus, what does 'TFIDF' stand for?

Total Frequency of Important Document Features

True Frequency of Document Files

Text Feature Identification for Documents

Term Frequency-Inverse Document Frequency (correct)

What is the purpose of Lemmatisation in text analysis?

Reducing words to their base form Signup and view all the answers

What is the purpose of tokenisation in text normalisation?

To divide the sentences into words, numbers, and special characters Signup and view all the answers

Why are stopwords removed in the text normalisation process?

Stopwords do not contribute significantly to the meaning of the text Signup and view all the answers

In text normalisation, what is the purpose of sentence segmentation?

To separate the whole corpus into individual sentences Signup and view all the answers

What is the main advantage of working on a corpus after tokenisation compared to before?

Efficient processing of individual elements like words and numbers Signup and view all the answers

In the context of creating document vectors, what is the purpose of the step 'Create Dictionary'?

To identify unique words across all documents Signup and view all the answers

How does text normalisation affect the data before creating document vectors?

It converts all words to lowercase Signup and view all the answers

What does a value of '1' under a word in a document vector indicate?

The word occurs exactly once in the document Signup and view all the answers

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 Signup and view all the answers