'20 bits' presentation slideshows

Index Compression

781 views • 58 slides

Index Compression

712 views • 56 slides

Index Compression

827 views • 56 slides

Information Retrieval

Information Retrieval. Lecture 3. Recap: lecture 2. Stemming, tokenization etc. Faster postings merges Phrase queries. This lecture. Index compression Space estimation. Corpus size for estimates. Consider n = 1M documents, each with about L =1K terms.

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Lecture 5: Index Compression

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Chapter 5:

Chapter 5:. 22540 - Computer Arch. & Org. (2). Memory Hierarchy. Memory Hierarchy. Principle of Locality Temporal Locality (Locality in Time) Spatial Locality (Locality in Space) Speed & Size. Memory Hierarchy. Magnetic Disks. CPU. Main Memory. Cache. Cache Memory.

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CS276: Information Retrieval and Web Search Pandu Nayak and Prabhakar Raghavan

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CS276: Information Retrieval and Web Search Pandu Nayak and Prabhakar Raghavan

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CS276: Information Retrieval and Web Search Christopher Manning and Prabhakar Raghavan

483 views • 48 slides

CS276A Information Retrieval

CS276A Information Retrieval. Lecture 3. Recap: lecture 2. Stemming, tokenization etc. Faster postings merges Phrase queries. This lecture. Index compression Space estimation. Corpus size for estimates. Consider n = 1M documents, each with about L =1K terms.

542 views • 47 slides

Modified from Stanford CS276 slides Chap. 5: Index Compression

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CS276 Information Retrieval and Web Search

590 views • 45 slides

Index Compression

Index Compression. Lecture 4. Recap: lecture 3. Stemming, tokenization etc. Faster postings merges Phrase queries. This lecture. Index compression Space for postings Space for the dictionary Will only look at space for the basic inverted index here Wild-card queries.

546 views • 45 slides

ITCS 6265 Information Retrieval and Web Mining

566 views • 44 slides

Information Retrieval

Information Retrieval. Lecture 4. Recap: lecture 2. Stemming, tokenization etc. Faster postings merges Phrase queries. This lecture. Index compression Space for postings Space for the dictionary Will only look at space for the basic inverted index here Wild-card queries.

505 views • 43 slides

CS728 Web Indexes

483 views • 40 slides

Index Compression

Index Compression. Adapted from Lectures by Prabhakar Raghavan (Yahoo, Stanford) and Christopher Manning. Plan. Last lecture Index construction Doing sorting with limited main memory Parallel and distributed indexing Today Index compression Space estimation Dictionary compression

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Categorical Perception and the Convergence of Social Learning

Categorical Perception and the Convergence of Social Learning. Mark Y. Liberman University of Pennsylvania http://www.ling.upenn.edu/~myl. Acoustical Society of America Fall meeting 2000. The problem of vocabulary consensus. 10K-100K arbitrary pronunciations

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INFORMATION RETRIEVAL TECHNIQUES BY DR. ADNAN ABID

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Quiz3 - Answer 1

Quiz3 - Answer 1. The CPI (Cycles Per Instruction) for the first program is the sum of the frequency of each instruction type multiplied by the instruction type: 0.17*7 + 0.63*4 + 0.10*12 + 0.10*3 = 5.21 For the second program the CPI is 1 as each and every instruction takes 1 cycle. Answer 2.

113 views • 3 slides