INLS 509- Midterm Exam Guide - Comprehensive Notes for the exam ( 21 pages long!)
Document Summary
Ir is a field concerned w/ the structure, analysis, organization, storage, and retrieval of information. Structure: retrieval, efficiency: retrieving results in this lifetime (or, better yet, in . 18 seconds, effectiveness: retrieving results that satisfy, what is a search engine, many types of search engines, web search, digital library search. Local business search: desktop search, micro-blog search, people/profile search. Ir tasks and applications: web search, digital library search. Local business search: desktop search, micro-blog search, people/profile search, news search. Local business search: why is information retrieval difficult, how do search engines predict relevance, the search task. Lecture: boolean retrieval, evaluation, assumption, the user wants to find all the relevant documents and only the relevant documents. If the query is too specific, it may not retrieve relevant document, but not enough. Formula = |b|/|c|(of the things that were retrieved, how many were relevant?: recall, percentage of relevant documents that are retrieved. List of concepts and pointers to documents that discuss them.