indexing sheet - Sheet1

Aug 14, 2025

0 likes | 2 Vues

Indexing sheet

Share Presentation

Embed Code

Link

Navjeet2

Télécharger la présentation

indexing sheet - Sheet1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

Indexing

CS 400/600 – Data Structures. Indexing. Memory and Disk. Typical memory access: 30 – 60 ns Typical disk access: 3-9 ms Difference: 100,000 to 1,000,000  ! Over the past 10 years: CPU speeds increased 30 (100 MHz to ~3GHz) Disk speeds increased ~2 Disk sizes increased ~80x

718 views • 44 slides

Indexing:

Indexing:. The Good, The Bad, And the Ugly. Part 1: The Good. U.S. Equity Index Funds as a Percentage of U.S. Equity Mutual Fund Assets. Net Flows to US Index Funds ($ Billions). Net Assets vs. Number of ETFs ($ Billions). The Good:. They’re cheap.

593 views • 32 slides

Indexing

Indexing. Overview. An index is a table containing a list of keys associated with a reference field pointing to the record where the information referenced by the key can be found. An index lets you impose order on a file without rearranging the file.

440 views • 24 slides

Indexing

Indexing. Data Organization & Indexing. Constraints imposed by disk architecture Seek time, rotational latency, transfer time Basic unit of data transfer: a page or block Comparison: Heap versus sorted files Heap files: simply append at end

281 views • 10 slides

Indexing

Indexing. Overview of the Talk. Inverted File Indexing Compression of inverted files Signature files and bitmaps Comparison of indexing methods Conclusion. Usual granularity is document-level, unless a significant fraction of the queries are expected to be proximity-based.

519 views • 26 slides

Indexing

Indexing. Indexing. Index ? What is it ?. Indexing. Index ? What is it ? A database index is a persistent memory data structure that improves efficiency of data lookup to rows of a table by a keyed access method. Indexing. Why do we need it ?. Indexing. Why do we need it ?

1.24k views • 76 slides

INDEXING

INDEXING. Teknik Informatika Universitas Trunojoyo Semester Genap 2011-2012. INDEXING. INVERTED FILES SUFFIX TREE & SUFFIX ARRARYS SIGNATURE FILES. INVERTED FILES. Terdiri dari Vocabulary (kata) daftar kata yang berbeda dari sebuah object kalimat/document Occurrences (kemunculan)

400 views • 17 slides

Indexing

Indexing. Overview Approaches to indexing Automatic indexing Information extraction. Overview. Indexing : the transformation of documents to searchable data structures. May be manual or automatic Creates basis for direct search,or for search through index files.

527 views • 15 slides

Indexing

Vu Phan SE157B Spring2007 04/15/2007. Indexing. Overview. Basic Concepts Evaluation Factors Ordered Indices Types of Ordered Indices: Dense Index and Order Index Multilevel Indices Index Update: Insertion and Deletion Secondary Indices. Basic Concepts.

519 views • 19 slides

Indexing

Indexing. By: Arnold Mesa. Indexing. You can think of an index to a file like a catalogue to a library. There are two kinds. Ordered Indices - sorted ordering of the values.

431 views • 12 slides

Indexing

Indexing. Cost Model for Data Access. Data should be stored such that it can be accessed fast Evaluation of Access Methods based on measuring the number of page I/O’s disk access in general more costly than CPU costs CPU costs considered to be negligible in comparison with I/O

399 views • 25 slides

Indexing

Indexing. CSCI 572: Information Retrieval and Search Engines Summer 2010. Outline. Building your search corpus Differences from RDBMS The Document/Field Model The Flattening Process Understanding Field Types Challenges. Building an index.

266 views • 16 slides

Indexing

Indexing. Contains slides by Hector Garcia-Molina, Vera Goebel. Overview. Conventional indexes B-trees Hashing schemes Multidimensional indexes tree-like structures hash-like structures bitmap-indexes. Search - I. How do you represent a relation or an extent?

1.09k views • 78 slides

Indexing

Indexing. Documents x terms matrix t 1 t 2 . . . t j . . . t m nf d 1 w 11 w 12 . . . w 1j . . . w 1m 1/|d 1 | d 2 w 21 w 22 . . . w 2j . . . w 2m 1/|d 2 |

311 views • 20 slides

Indexing

Indexing. Sampath Jayarathna Cal Poly Pomona Credit for some of the slides in this lecture goes to www.db-book.com. Basic Concepts. Indexing mechanisms used to speed up access to desired data. E.g., author catalog in library

840 views • 50 slides

Indexing

Indexing. Basic Concepts. Indexing mechanisms used to speed up access to desired data. E.g., author catalog in library Search Key - attribute or set of attributes used to look up records in a file. An index file consists of records (called index entries ) of the form

177 views • 10 slides

Indexing

827 views • 78 slides

Indexing

Class Summary ISLM 301: Indexing and Abstracting Full Marks: 100 Course Final 80, Incourse 20 (Tutorial 10, Class Presentation 5, Project 5) CH-4.

131 views • 6 slides

Indexing

Indexing. Economics 428 Fall 2010. Two Separate Issues. How to index monthly benefits How to calculate the initial benefit. Benefits are Indexed by the CPI (not wages). Maintains the real value of the benefit Retirees get no benefit from productivity growth.

144 views • 10 slides

Indexing

Indexing. Indexing Q hkl = h 2 a* 2 + k 2 c* 2 + l 2 c* 2 + 2hka*b* cos gamma* + 2klb*c* cos alpha* + 2hlc*a* cos beta* = (1/d hkl ) 2. Q 100 Q 010 Q 001. Choose first three reflections as basis vectors. Q 200. Q 300. Indexing Ito's method example - Q values given

143 views • 10 slides

Embrace The Essence of APC at SHEET-1, Your Premier APC Online Store - SHEET1

APC, a brand known for its timeless designs and impeccable craftsmanship, has found its home at SHEET-1. Whether you are a fashion connoisseur or someone exploring the world of luxury fashion for the first time, APC has something unique to offer. Our store proudly presents a diverse APC collection that caters to both men and women, showcasing their iconic apparel, accessories, and more.

93 views • 6 slides

Vender Sheet - Sheet1

Address 1466 San Bruno Ave 25th St San Francisco CA 94110 Phone (628) 626-4184 Website https://earthlingauto.com/ Hours 24 Description Supreme Detailing is a consumer vehicle cleaning company offering mobile and at our location interior and exterior detailing. We also offer Fleet and Commercial services. We offer mobile detailing, car washes, pet hair and mess (vomit, mold and spills) removal. You can come to us or wu2026

23 views • 1 slides

More Related