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What we find changes who we become.
- Peter Morville.
Venkatesh Vinayakarao (Vv)
Information Retrieval
Venkatesh Vinayakarao venkateshv@cmi.ac.in Chennai Mathematical Institute
https://vvtesh.sarahah.com/
Information Retrieval Venkatesh Vinayakarao venkateshv@cmi.ac.in - - PowerPoint PPT Presentation
Information Retrieval Venkatesh Vinayakarao venkateshv@cmi.ac.in - - PowerPoint PPT Presentation
https://vvtesh.sarahah.com/ Information Retrieval Venkatesh Vinayakarao venkateshv@cmi.ac.in Chennai Mathematical Institute What we find changes who we become. -Peter Morville. Venkatesh Vinayakarao (Vv) Agenda A gentle introduce to
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About Me
BE (Computer Science) MS (Information Tech.) Software Engineer Software Engineer Software Engineer Yahoo, Microsoft PhD (IR + PA + SE) Year 2000 2013 2002 2009 2004 2018 Teaching & Research (IR + PA + SE) Till date
IR = Information Retrieval, PA = Program Analysis, SE = Software Engineering
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Acknowledgment Some slides are borrowed from the companion website of Manning et al.’s IR book
(https://nlp.stanford.edu/IR-book/)
A good teacher can inspire hope, ignite the imagination, and instill a love of learning.
- Brad Henry.
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Life without search engines is difficult to imagine!
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Search in Banking and Finance
Lots of products to sell Reach a part of documentation faster
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Search in Sports, Travel & Entertainment
Search events, programs, and schedules
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Search in Education, Ecommerce and Healthcare
Search courses, articles, symptoms, books, etc.
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Results of job search conducted on 18th June 2020 on https://www.linkedin.com/jobs for solr/information retrieval/search
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Introduction
What is Information Retrieval?
d1:“IIT Madras” d2:“CMI” … Collection
Retrieval System
Results = ?? Query = “CMI” Information Need Let us learn more about CMI
Information Retrieval (IR) is finding material (usually documents)
- f an unstructured nature (usually text) that satisfies an
information need from within large collections.
– From the Manning et al. IR Book.
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Information
Information is any entity or form that provides the answer to a question of some kind or resolves uncertainty. – Wikipedia.
Shannon’s Definition, Fisher Information, Neumann Entropy, …
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Introduction
Role of Information
- If only you knew
- Which stock to invest in?
- Which faculty to work with?
- How to get into a top college?
- Which course to register for?
- What to study?
- How to prepare for job interviews?
- …
- If only you had the information, you could rule this
world!
- What happens when all the information is deprived
from you?
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Introduction
Solitary ry Confinement is Cruel
SLIDE 14 Google
Introduction
Information
Several retrieval systems: Lycos, Altavista, MSN, Baidu, Yahoo!, Ask.com, etc.,
Royal Library of Alexandria
300 BC.
Bibliothèque nationale de France 1463
British Library 1970’s
170+ Million Collection
Digital Libraries
1970’s
Universal Digital Library, Project Gutenberg, etc.
1998
30 Trillion documents > 130 Trillion in 2016
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Information Retrieval – Road Ahead
Processed Content Index
Retrieval System Results Query Documents Query Results Human Judges Crawling Relevance and Ranking Index Compression Evaluation Techniques Content Processing
1 2 3 4 5 6
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Technologies & Frameworks
Galago, Indri UMass & CMU
- Univ. of Glasgow
Apache Apache
Thanks to these… We can now focus on more complex problems.
Apache There are many more….
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Entity Search
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In spite of all these developments, “search”ing effectively has been an art.
(This is why) The academia, research labs, and the software industry needs you. Let us strive to build better search experiences.
Research contributions from leading corporates in SIGIR 2020
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Introduction
Resources
Course Text Reference
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