Presenter : Yu-Ting LU Authors : Hsin-Chang Yang, Han-Wei Hsiao, Chung-Hong Lee 2011. IPM

Intelligent Database Systems Lab

Presenter : YU-TING LU

Authors : Hsin-Chang Yang, Han-Wei Hsiao, Chung-Hong Lee

2011. IPM

Multilingual document mining and navigation using self-organizing maps


OutlinesMotivationObjectivesMethodologyExperimentsConclusionsComments


Motivation• Such directories are generally constructed

manually and may have disadvantages of

narrow coverage and inconsistency.

• Most of existing directories provide only

monolingual hierarchies that organized Web

pages in terms that a user may not be familiar

with.



資料探勘 Data mining


Objectives• This work will propose an approach that could

automatically arrange multilingual Web pages into a

multilingual Web directory to break the language

barriers in Web navigation.


Methodology


Methodology – Web directory generation• Web page preprocessing and encoding– English• Word segmentation• stop-word elimination• Stemming• keyword selection

– Chinese• select only nouns as keywords


Methodology – Web directory generation• Feature map generation


Methodology – Web directory generation• Web directory generation– Super cluster construction – Determining dominating clusters – Constructing hierarchy– Parameter setting and discussions

– Super cluster construction – Determining dominating clusters – Constructing hierarchy– Parameter setting and discussions


Methodology – Web directory generation• Evaluation of the quality of generated hierarchies


Methodology – Multilingual Web directory generation

• Alignment of monolingual Web directories– Calculating semantic similarity – Incorporating structural similarity– Overall similarity



• Alignment of monolingual Web directories



• Multilingual Web directory generation


Experiments - SOM training


Experiments - SOM training


Experiments - Hierarchy generation






Experiments - Hierarchy alignment and Web directory generation


Conclusions

• The development of multilingual hierarchy alignment method is fully automated and requires no human intervention.

• It will be convenient for users to have a Web directory providing multilingual category labels and categorizing multilingual Web pages.


Comments• Advantages

-The development of multilingual hierarchy alignment method -Fully automated

• Applications- SOM

Documents

Presenter : Yu-Ting LU Authors : Hsin-Chang Yang, Han-Wei Hsiao, Chung-Hong Lee 2011. IPM