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What and Who
Title:Leveraging Semantic Annotations for Event-focused Search & Summarization
Speaker:Arunav Mishra
coming from:Max-Planck-Institut für Informatik - D5
Speakers Bio:
Event Type:Promotionskolloquium
Visibility:D1, D2, D3, D4, D5, SWS, RG1, MMCI
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Level:Public Audience
Language:English
Date, Time and Location
Date:Monday, 12 March 2018
Time:10:00
Duration:60 Minutes
Location:Saarbrücken
Building:E1 4
Room:0.24
Abstract
Today in this Big Data era, overwhelming amounts of textual information across different sources with a high

degree of redundancy has made it hard for a consumer to retrospect on past events. A plausible solution is to
link semantically similar information contained across the different sources to enforce a structure thereby
providing multiple access paths to relevant information. Keeping this larger goal in view, this work uses
Wikipedia and online news articles as two prominent yet disparate information sources to address the following
three problems:
•    We address a linking problem to connect Wikipedia excerpts to news articles by casting it into an IR task.
Our novel approach integrates time, geolocations, and entities with text to identify relevant documents that
can be linked to a given excerpt.
•    We address an unsupervised extractive multi-document summarization task to generate a fixed-length event
digest that facilitates efficient consumption of information contained within a large set of documents. Our novel
approach proposes an ILP for global inference across text, time, geolocations, and entities associated with the event.
•    To estimate temporal focus of short event descriptions, we present a semi-supervised approach that leverages
redundancy within a longitudinal news collection to estimate accurate probabilistic time models.
Extensive experimental evaluations demonstrate the effectiveness and viability of our proposed approaches
towards achieving the larger goal.

Contact
Name(s):Daniela Alessi
Phone:5000
EMail:--email address not disclosed on the web
Video Broadcast
Video Broadcast:NoTo Location:
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Created:
Daniela Alessi/MPI-INF, 03/02/2018 10:20 AM
Last modified:
halma/MPII/DE, 05/22/2019 12:01 AM
  • Daniela Alessi, 03/02/2018 10:27 AM -- Created document.