PPT-Search Engines Information Retrieval in Practice

Author : karlyn-bohler | Published Date : 2018-10-13

All slides Addison Wesley 2008 Classification and Clustering Classification and clustering are classical pattern recognition machine learning problems Classification

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Search Engines Information Retrieval in Practice: Transcript

All slides Addison Wesley 2008 Classification and Clustering Classification and clustering are classical pattern recognition machine learning problems Classification Asks what class does this item belong to. Italo . Trevisan. ). Search. . Engine. . definition. A. computer program that searches documents, especially on the. . World Wide Web, . for a specified word or words and provides a list of documents in which they are found. . Presentation by Xavier Buck 17.03.2011. How did/do Search Engines influence my businesses and how do I influence them.. Today. . we. . will. . cover. Social Media. Stats. & Trends. CSC . 575. Intelligent Information Retrieval. 2. Source: . Intel. How much information?. Google: . ~100 . PB a . day; 3+ million servers (15 . Exabytes. stored). Wayback Machine has . ~9 . PB + . 100 . Miguel Costa. , Daniel Gomes (speaker). Portuguese Web . Archive. Information Retrieval. is the activity of obtaining . information resources relevant. . to an . information need. from a . collection. Course summary. Crista. Lopes. Lecture Objective. Know what you know. Problem Space of this course. “Big Data”. How to. collect it. index it. search it for relevant information. Industry segment . ChengXiang. (“Cheng”) . . Zhai. Department of Computer Science. University of Illinois at Urbana-Champaign. http://www.cs.uiuc.edu/homes/czhai. . Email: czhai@illinois.edu. 1. Yahoo!-DAIS Seminar, UIUC. All slides ©Addison Wesley, 2008. Social Search. Social search . Communities. of users . actively participating. in the search process. Goes beyond classical search tasks. Key differences. Users interact with the system. All slides ©Addison Wesley, 2008. How Much Data is Created Every . Minute?. Source: . https. ://www.domo.com/blog/2012/06/how-much-data-is-created-every-minute/. The Search Problem. Search and Information Retrieval. All slides ©Addison Wesley, 2008. Search Engine Architecture. A software architecture consists . of . software . components, the interfaces provided by those . components, and . the relationships between . All slides ©Addison Wesley, 2008. Beyond Bag of Words. “Bag of Words”. a document is considered to be an unordered collection of words with no relationships. Extending representation. feature-based models. Class Activity. Action: . Write. down the . 4 or 5 points. that most impact you from this presentation.. You will need this for the group activity at the end of this presentation.. Key to Learning. What is IR?. Sit down before fact as a little child, . be prepared to give up every conceived notion, . follow humbly wherever and whatever abysses nature leads, . or you will learn nothing. . . -- Thomas Huxley --. Fatemeh. Azimzadeh. Books. (Manning et al., 2008). Christopher D. Manning, . Prabhakar. . Raghavan. , and . Hinrich. . Schütze. . Introduction to Information Retrieval. Cambridge University Press, 2008. . 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

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