IR Series - Grace, Hui Yang - Friday May 16th - 12:00 (noon), NSH 3002

[Jonathan Elsas]

Reminder: Today at Noon

On May 8, 2008, at 1:46 PM, Jonathan Elsas wrote:

> Greetings,
>
> Please join us for the upcoming IR Series talk!
>
> Lunch will be provided by Yahoo!
>
> Title:
> Ontology Learning by Supervised Hierarchical Clustering
>
> Who: Grace, Hui Yang
> When: Friday, May 16th, 12:00pm
> Where: NSH 3002
>
> Abstract:
> This work makes novel use of supervised clustering as the basic
> framework to construct concept ontology interactively or
> automatically. Supervised hierarchical clustering is used to
> organize ontology fragments, which are identified by techniques in
> natural language processing and information retrieval, into
> hierarchies. At each clustering iteration, a distance metric is
> learned from the clustering given by either pseudo or real
> feedback. K-medoids clustering with sampling is then used to group
> the concepts at the higher level. A web-based cluster naming
> algorithm is also presented. By conducting a user evaluation, the
> system is shown to be effective to save human efforts in the
> interactive runs. Both automatic and interactive runs of the
> experiments show that the approach is effective.
>
>
>