Semantic Web as Collateral Damage from Keyword Search

When it comes to Semantic Web in Information Retrieval, it has been over-promise and under-delivery. While existing players like Google, Microsoft, and Yahoo seem that they have carefully added "Semantic" features under their hoods. So why are p… more »
Posted under Information, Brain, Database, Semantics on 07.9.2011 • 2 feedbacks » • PermalinkPermalink

Internet People

It was two years ago that I launched a search engine that was based on the concept of "Chigai". It was highly experimental, but ended up as a miserable failure due to too much randomness. Its underlying algorithm is based on Probabilistic Topic Mode… more »
Posted under Brain, Database on 06.13.2011 • Send feedback » • PermalinkPermalink

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Intel Nehalem????????CPU?????????Pentium???????????????????????????????????????????????????????CPU?????????????????????????????????????????CEDEC?????????????????????????????????? Amdahl's law???????????????????????????????????????????????????????????… more »
Posted under Database on 11.12.2010 • Send feedback » • PermalinkPermalink

Priority management of Hadoop MapReduce

Many MapReduce jobs are now in progress. Then, one critical job arrived. How to get this done? Priority management is one of the hardest part to do in Java. Under the design of my prev post, StreamingDBInputFormat for low latency MapReduce, it i… more »
Posted under Database on 11.8.2010 • Send feedback » • PermalinkPermalink

StreamingDBInputFormat for low latency MapReduce

There's a sub class of InputFormat, called DBInputFormat, when you want to load data from RDBMS and do MapReduce jobs. But it is not practical because of its complexity. It does: 1. select count(*) from A 2. select * from A where X offset M lim… more »
Posted under Database on 11.7.2010 • Send feedback » • PermalinkPermalink

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