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Computational Linguistics and Information Processing

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The CLIP Colloquium is a weekly speaker series organized and hosted by CLIP Lab. The talks are open to everyone. Most talks are held at 11AM in AV Williams 3258 unless otherwise noted. Typically, external speakers have slots for one-on-one meetings with Maryland researchers before and after the talks; contact the host if you'd like to have a meeting.
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<center>[[Image:colloq.jpg|center|504px|x]]</center>
  
If you would like to get on the cl-colloquium@umiacs.umd.edu list or for other questions about the colloquium series, e-mail [mailto:jimmylin@umd.edu Jimmy Lin], the current organizer.
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== CLIP Colloquium ==
  
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The CLIP Colloquium is a weekly speaker series organized and hosted by CLIP Lab. The talks are open to everyone. Most talks are held on Wednesday at 11AM in AV Williams 3258 unless otherwise noted. Typically, external speakers have slots for one-on-one meetings with Maryland researchers.
  
{{#widget:Google Calendar
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If you would like to get on the clip-talks@umiacs.umd.edu list or for other questions about the colloquium series, e-mail [mailto:oard@umiacs.umd.edu Doug Oard], the current organizer.
|id=lqah25nfftkqi2msv25trab8pk@group.calendar.google.com
 
|color=B1440E
 
|title=Upcoming Talks
 
|view=AGENDA
 
|height=300
 
}}
 
  
== 08/20/2012: TopSig – Signature Files Revisited (Shlomo Geva)==
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For up-to-date information, see the [https://talks.cs.umd.edu/lists/7 UMD CS Talks page].  (You can also subscribe to the calendar there.)
'''Speaker:''' Shlomo Geva, Queensland University of Technology, Australia<br/>
 
'''Time:''' Monday August 20, 11:00 AM<br/>
 
'''Venue:''' AVW 3120<br/>
 
  
'''Abstract:''' Performance comparisons between File Signatures and Inverted
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=== Colloquium Recordings ===
Files for text retrieval have previously shown several
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* [[Colloqium Recording (Fall 2020)|Fall 2020]]
significant shortcomings of file signatures relative to inverted
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* [[Colloqium Recording (Spring 2021)|Spring 2021]]
files. The inverted file approach underpins most state-of-theart
 
search engine algorithms, such as Language and Probabilistic
 
models. It has been widely accepted that traditional
 
file signatures are inferior alternatives to inverted files. This
 
paper describes TopSig, a modern approach to the construction
 
of file signatures - many advances in semantic hashing and
 
dimensionality reduction have been made in recent times,
 
but these were not so far linked to general purpose, signature
 
file based, search engines. This paper introduces a different
 
signature file approach that builds upon and extends
 
these recent advances. We are able to demonstrate significant
 
improvements in the performance of signature file based
 
indexing and retrieval, performance that is comparable to
 
that of state of the art inverted file based systems, including
 
Language models and BM25. These findings suggest that
 
file signatures offer a viable alternative to inverted files in
 
suitable settings and position the file signature model in
 
the class of Vector Space retrieval models.
 
TopSig is an open-source search engine from QUT and it can be discussed too if there is an interest.
 
  
'''About the Speaker:''' Associate Professor Shlomo Geva is the discipline leader for
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=== Previous Talks ===
Computational Intelligence and Signal Processing in the Computer
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* [[https://talks.cs.umd.edu/lists/7?range=past Past talks, 2013 - present]]
Science Department at the Queensland University of Technology in
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* [[CLIP Colloquium (Spring 2012)|Spring 2012]]  [[CLIP Colloquium (Fall 2011)|Fall 2011]]  [[CLIP Colloquium (Spring 2011)|Spring 2011]]  [[CLIP Colloquium (Fall 2010)|Fall 2010]]
Brisbane, Australia. His research interests include clustering,
 
cross-language information retrieval, focused information retrieval,
 
link discovery, and xml indexing.
 
  
'''Host:''' Doug Oard, oard@umd.edu
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== CLIP NEWS  ==
  
== Talks From Previous Semesters ==
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* News about CLIP researchers on the UMIACS website [http://www.umiacs.umd.edu/about-us/news]
* [[CLIP Colloquium (Spring 2012)|Spring 2012]]
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* Please follow us on Twitter @umdclip [https://twitter.com/umdclip?lang=en]
* [[CLIP Colloquium (Fall 2011)|Fall 2011]]
 
* [[CLIP Colloquium (Spring 2011)|Spring 2011]]
 
* [[CLIP Colloquium (Fall 2010)|Fall 2010]]
 

Revision as of 18:21, 6 June 2021

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CLIP Colloquium

The CLIP Colloquium is a weekly speaker series organized and hosted by CLIP Lab. The talks are open to everyone. Most talks are held on Wednesday at 11AM in AV Williams 3258 unless otherwise noted. Typically, external speakers have slots for one-on-one meetings with Maryland researchers.

If you would like to get on the clip-talks@umiacs.umd.edu list or for other questions about the colloquium series, e-mail Doug Oard, the current organizer.

For up-to-date information, see the UMD CS Talks page. (You can also subscribe to the calendar there.)

Colloquium Recordings

Previous Talks

CLIP NEWS

  • News about CLIP researchers on the UMIACS website [1]
  • Please follow us on Twitter @umdclip [2]