TA_IRS

4. The process of breaking text into words or terms for indexing.
7. Measures similarity between two sets as intersection divided by union.
8. Represents documents and queries as vectors in multi-dimensional space for similarity computation.
10. Phonetic algorithm for indexing words by their sound rather than spelling.
12. Retrieval model based on logical operators AND, OR, and NOT.
13. Technique to identify hidden relationships between terms and documents using SVD.
14. Matrix factorization method used in Latent Semantic Indexing (LSI).
15. Harmonic mean of precision and recall; used to balance both.

1. Number of operations (insert, delete, substitute) to convert one string into another.
2. Commonly used words like “the”, “is”, “and” that are removed during text processing.
3. Data structure mapping terms to the list of documents that contain them.
5. Technique used to reduce words to their root or base form (e.g., “running” → “run”).
6. Fraction of relevant documents that are successfully retrieved.
9. Fraction of retrieved documents that are relevant.
11. Index that stores all rotations of a word to efficiently handle wildcard queries.
12. Index created using pairs of consecutive characters for tolerant retrieval.