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Object Summary
徐丹云
数据库领域
A novel keyword search paradigm in
relational databases: Object
summaries(Data & Knowledge
Engineering 2011)
 An OS summarizes all data held about a
particular Data Subject (DS) in a database.
 Comprise a more complete and therefore
semantically meaningful set of information
about the enquired DS

keyword search paradigm
输入Keywords :“Janet Peacock”
 输出a ranked set of OSs
 An OS is a tree comprised of tuples, with
the tDS tuple as the root node and t’s
neighboring typles the child nodes
 Based on a Data Subject Schema
Graph(GDS) automatically generated for
each RDS

信息检索领域
Summarizing highly structured documents
for effective search interaction
( international ACM SIGIR conference
2012)
 users still need to judge which documents
in the returned results are most useful to
them based on the summaries of the
retrieved documents.
 “15-inch silver laptop by Lenovo”

Summarization based on queryspecific facet selection

use a learning-based approach to rank all
facet-value pairs according to their
relevance to the query
◦ Learning model:Gradient Boosted Trees(GBT)
rank facets according to their importance
 generate summaries for each retrieved
document based on the most important
facets we learn in the previous step

异同
数据的呈现形式
 摘要判定标准
 建立摘要的目的
