PPT-Search Techniques for the Web

Internet Searching Keywords The basis of all search techniques Main topic of search Additional words to narrow search But what if you still cant find it Boolean logic Use computer ese. Web Hosting Saturday January 19 2008 Storm Worm returns as a Mushy Valentines Day Greeting Not matter what the season or occasion the Storm Worm somehow rears its ugly head The New Year 2008 saw the return of the Storm Worm posing as a fake greeting Basic Terms. Search engine. Software that finds information on the Internet or World Wide Web. Web crawler. An automated program that surfs the web and indexes and/or copies the website. Also known as bots, web spiders, web robots. Chapter 20. Objectives. The . History. and . Anatomy. of Search Engines. Web . Crawlers. and Scrapers. Indexing. and Reverse Indexing. 1. 2. 3. White-Hat . Search Engine Optimization. 5. PageRank. on Medical . Concerns . and . Self Diagnosis. Ryen W. White PhD and Eric Horvitz MD, PhD. Microsoft Research. {ryenw, horvitz}@microsoft.com. Outline. Motivation. Online Medical Search. Cyberchondria. Boolean Logic and Keyword Searching. Information Retrieval . Catalogues, index, subject directories, lists, etc.. . Field searches, keyword and sections searches, etc.. Full-text search. . In text retrieval, . 楊立偉教授. 台灣科大資管系. wyang@ntu.edu.tw. 本投影片修改自. Introduction to Information Retrieval. 一書之投影片 . Ch. 20 & 21. 1. More topics. Ads and search engine optimization. What types of techniques are used in your specialism?. What is the purpose of them?. Find examples of 4 different techniques that you could use to develop your skills.. How could learning them improve your work?. Finding What You’re Looking For. First, Ask a Question . . .. The Search Question. Creating a good search question is half the battle. Types of questions:. Specific: you want the answer to a specific question. A major way to break the chain of infection is to use aseptic techniques while providing health care.. Asepsis. =absence of disease-producing microorganisms (pathogens). Sterile. =free from all organisms, both pathogens & . W. hat . are you . trying to find?. List . major genres . of . non-fiction writing. . What are some . key differences . between them?. Articles. : what is the . difference between an article in a newspaper, . Google is the dominant search provider… . for now!. Microsoft’s BING! . is on the rise.. Mobile advertising . is still young; . will Google continue its dominance?. Internet Ad Spending. Internet ad spending is on the rise.. How much of the total web are you able to searchFreshness How often do their crawlers update the copies of the web pages you are searchingCompleteness of textIs the database really full text or only p The . IR system contains . a . collection . of . documents. , . with . each document represented . by . a . sequence . of . tokens. . Markup may indicate titles, . authors, and . other . structural. jteevan. ). Microsoft Research. ECIR 2017. . . The World Wide Web . In 1994. Content. 2,700 websites (14% .com). Tools. Mosaic only . 1 year old. Pre-Netscape, IE, Chrome. 4 years pre-Google. Search Engines.