AdRelated Problem Formulation

Two Approaches to tackle the problem


IE + IR

Similarity Problem

IE + IR

Similarity Problem

How Search Engines Work ? 

How Search Engines Work ? 

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).

How Search Engines Work ? 

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).

How Search Engines Work ? 

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).

How Search Engines Work ? 

Crawl the web using spiders

Index the crawled pages

Rank the results

Post results enrichment

How Search Engines Work ? 

Crawl the web using spiders

Index the crawled pages

Rank the results

Post results enrichment

How Search Engines Work ? 

Crawl the web using spiders

Index the crawled pages

Rank the results

Post results enrichment

How Search Engines Work ? 

Crawl the web using spiders

Index the crawled pages

Rank the results

Post results enrichment

Crawl the web using spiders

- Scale

- Scheduling

- Cache invalidation

Index the crawled pages

speed of retrieval

Inverted Index

Inverted Index

Rank the results

Boolean ranking

TF-IDF

PageRank

Boolean Retrival 

TF IDF

Page Rank

Post results enrichment

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Public - 6/10/16, 12:30 PM