Chapter 17: Putting Everything Together This is the end, my only - PowerPoint PPT Presentation

Chapter 17: Putting Everything Together This is the end, my only friend, the end. -- Jim Morrison (of The Doors) Every new beginning comes from some other beginning's end. -- Seneca When shall we three meet again? In thunder, lightning, or in rain? -- Three Witches ( Shakespeare‘s Macbeth) 17-1 IRDM WS 2015

Information Retrieval and Data Mining Data Preprocessing Query Processing Association Patterns Semantic Search Info Extraction Link Analysis Indexing Ranking Clustering Classification Sequences Graphs 17-2 IRDM WS 2015

Information Retrieval and Data Mining Data Preprocessing Query Processing Association Patterns Semantic Search Info Extraction Link Analysis Indexing Ranking Clustering Classification Sequences Graphs 17-3 IRDM WS 2015

Evolution (and Future) of Search Engines Learning Conversa- to Rank tional QA Language Models Deep QA Multimodal search Probabilistic IR PageRank Things not strings tf  idf SMART Library Privacy Click Knowledge catalogs > 1 Bio pages and trust graphs graphs 1960 1970 1980 1990 2000 2020 2010 17-4 IRDM WS 2015

Take-Home Message Search engines are one of the most impressive results of CS! Information retrieval is the science of search engines. It comprises and integrates many concepts and methods from algorithms, statistics, graphs, text analysis – and data mining ! Thank you very much for your participation! who hard works the student the exam pass will bright 17-5 IRDM WS 2015