[Lisa_teatalk] **CHANGE OF TIME TO THURSDAY 31 Oct at 13:00** room Z-260 Tea talk

Razvan Pascanu r.pascanu at gmail.com
Tue Oct 29 09:21:04 EDT 2013


Hi guys,

There has been a change of date/room to Thursday 31 Oct 13:00 room Z-260 as
Yoshua is leaving Friday morning to Korea.

Razvan



On Sat, Oct 26, 2013 at 12:12 AM, Razvan Pascanu <r.pascanu at gmail.com>wrote:

>
> Next
>  week
> we will have Xiaohua Liu giving a tea talk. NOTE the change of day to
> Friday and time 15:00.  Please find below the title and abstract of the
> talk, as well as short introduction of Xiaohua.
> Hope to see many of you there !
>
>
>
> Title:
>
> Collective Information Extraction for Micro-blogs****
>
> ** **
>
> Abstract:****
>
>
> Within the past five years, micro-blogs have greatly developed and now
> become one indispensable information source. Owing to the unstructured,
> fragmented, informally written, noisy and real-time nature of micro-blogs,
> it is hard for people to effectively obtain the information of their
> interests from micro-blogs. ****
>
> ** **
>
> In this talk, I will introduce the task of information extraction for
> micro-blogs, which consists of a serials of sub-tasks, including Named
> Entity Recognition (NER), Semantic Role Labeling (SRL) and Event Extraction
> (EE). ****
>
> ** **
>
> One main common research challenge is the dearth of information in a
> single micro-blog, rooted in the short and noisy nature of micro-blogs. In
> this talk, I will introduce the following three kinds of collective
> inference algorithms, which are applied to NER, SRL and EE, respectively,
> achieving remarkable improvements over the baselines.****
>
> ** **
>
> 1. K-nearest neighbor (KNN) classifier based joint inference that
> determines the output of the current input using the outputs of the inputs
> similar to the current input;****
>
> 2. Cluster based joint inference that involves the following two-stage
> labeling: In the first round, one single micro-blog is processed as usual;
> in the second round, similar micro-blogs are first clustered, then for each
> cluster an enhanced model that utilizes cluster-level information is
> applied to each micro-blog in the cluster;****
>
> 3. Graphical model based joint inference that conducts an information
> extraction related task on a collection of related micro-blogs, sharing
> information across micro-blogs and simultaneously determining the outputs
> for all the related micro-blogs.****
>
> ** **
>
> In the end, I will present a semantic search of micro-blogs called
> QuickView, which integrates various information extraction technologies and
> enables categorized browsing and advanced search of micro-blogs.****
>
> ** **
>
> A few words about myself:****
>
> ** **
>
> I am an affiliated postdoctoral research fellow of Professor Jian-Yun’s
> team. Before I moved to Montreal, I was Project Lead and Researcher in
> Microsoft Research Asia, Natural Language Computing Group.  My research
> interests include big data processing, social content mining, NLP for
> ranking, machine learning, etc. In recent three years I published 30+
> papers in ACL, AAAI, IJCAI, EMNLP, COLING, and SIGIR.   At my free time, I
> like coding and solving software development related challenges. I authored
> several programming related books, including "Detailed introduction of JSP
> programming" and "Mastering MFC".  I received PhD from Harbin Institute
> Technology, in 2012.****
>
> **
>
>
>
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