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

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Sep 02, 2023 468 likes •530 views

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

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Chapter 17: Putting Everything Together

When shall we three meet again? In thunder, lightning, or in rain?

- Three Witches

(Shakespeare‘s Macbeth) This is the end, my only friend, the end.

- Jim Morrison

(of The Doors)

IRDM WS 2015 17-1

Every new beginning comes from some other beginning's end.

- Seneca

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Information Retrieval and Data Mining

IRDM WS 2015 17-2

Data Preprocessing Association Patterns Clustering Sequences Graphs Classification Indexing Query Processing Ranking Info Extraction Semantic Search Link Analysis

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Information Retrieval and Data Mining

IRDM WS 2015 17-3

Data Preprocessing Association Patterns Clustering Sequences Graphs Classification Indexing Query Processing Ranking Info Extraction Semantic Search Link Analysis

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Evolution (and Future) of Search Engines

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1960 1970 1980 1990 2000 2010 2020 Library catalogs tf  idf SMART Probabilistic IR > 1 Bio pages PageRank Click graphs Knowledge graphs Learning to Rank Language Models Deep QA Things not strings Multimodal search Conversa- tional QA Privacy and trust

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Take-Home Message

IRDM WS 2015 17-5

Thank you very much for your participation!

the exam pass will hard works the bright student who 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!