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Indexer steps dictionary postings - PowerPoint PPT Presentation

Introducing Information Retrieval and Web Search

Introducing Information Retrieval and Web Search

Introducing Information Retrieval and Web Search. Information Retrieval. Information Retrieval (IR) is finding material (usually documents) of an unstructured nature (usually text) that satisfies an information need from within large collections (usually stored on computers) .

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1.89k views • 188 slides
Introducing Information Retrieval and Web Search

Introducing Information Retrieval and Web Search

Introducing Information Retrieval and Web Search. Information Retrieval. Information Retrieval (IR) is finding material (usually documents) of an unstructured nature (usually text) that satisfies an information need from within large collections (usually stored on computers) .

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766 views • 57 slides
Introducing Information Retrieval and Web Search

Introducing Information Retrieval and Web Search

Introducing Information Retrieval and Web Search. Information Retrieval. Information Retrieval (IR) is finding material (usually documents) of an unstructured nature (usually text) that satisfies an information need from within large collections (usually stored on computers) .

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565 views • 56 slides
The Inverted Index The key data structure underlying modern IR

The Inverted Index The key data structure underlying modern IR

The Inverted Index The key data structure underlying modern IR. Sec. 1.2. 1. 2. 4. 11. 31. 45. 173. 1. 2. 4. 5. 6. 16. 57. 132. Inverted index. For each term t , we must store a list of all documents that contain t . Identify each doc by a docID , a document serial number

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398 views • 10 slides

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