Indrajit Bhattacharya

Learn More
Many databases contain uncertain and imprecise references to real-world entities. The absence of identifiers for the underlying entities often results in a database which contains multiple references to the same entity. This can lead not only to data redundancy, but also inaccuracies in query processing and knowledge extraction. These problems can be(More)
The goal of entity resolution is to reconcile database references corresponding to the same real-world entities. Given the abundance of publicly available databases where entities are not resolved, we motivate the problem of quickly processing queries that require resolved entities from such 'unclean' databases. We propose a two-stage collective resolution(More)
Facet-based sentiment analysis involves discovering the latent facets, sentiments and their associations. Traditional facet-based sentiment analysis algorithms typically perform the various tasks in sequence, and fail to take advantage of the mutual reinforcement of the tasks. Additionally, inferring sentiment levels typically requires domain knowledge or(More)
! " # $ % ! & ' ( $ ( # ! )* + , ' ( ( ./ 0) # * 1 23 1 4 65 !)7 98 :1 &5 ; # 9 < )" *( = * >. $? # 2@ 9 A B $ # # $ C ! % , .* DE5F > ) G H ( # = ) , I *)J K 9 "./ <L 4) E . < 9 = ! # * J 0 > + 3 $?* M N 4)% * $ !)C?/ M A5 O M P ( 8K * F * Q # H R ( $ S *( =T ( # 4 4)6U 9 # , . O 0 + J(4 ." R ! # * = 23 * 7 * > * *) < # V # I $2W * R M P ( , . E8I * # & !(More)
We consider the problem of handling similarity queries in peer-to-peer databases. We propose an indexing and searching mechanism which, given a query object, returns the set of objects in the database that are semantically related to the query. We propose an indexing scheme which clusters data such that semantically related objects are partitioned into a(More)
An RFID network consists of a set of tags and readers. The cost and the number of tags covered directly depend on the number of readers. So, finding optimal number of readers and their positions to cover all tags is one of the most important issues in an RFID network. In this paper, we have proposed a reader placement technique in a departmental store(More)