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PODS
2011
ACM
238views Database» more  PODS 2011»
13 years 1 months ago
Beyond simple aggregates: indexing for summary queries
Database queries can be broadly classified into two categories: reporting queries and aggregation queries. The former retrieves a collection of records from the database that mat...
Zhewei Wei, Ke Yi
PVLDB
2011
13 years 1 months ago
Merging What's Cracked, Cracking What's Merged: Adaptive Indexing in Main-Memory Column-Stores
Adaptive indexing is characterized by the partial creation and refinement of the index as side effects of query execution. Dynamic or shifting workloads may benefit from prelimi...
Stratos Idreos, Stefan Manegold, Harumi A. Kuno, G...
SIGMETRICS
2011
ACM
208views Hardware» more  SIGMETRICS 2011»
13 years 1 months ago
Structure-aware sampling on data streams
The massive data streams observed in network monitoring, data processing and scientific studies are typically too large to store. For many applications over such data, we must ob...
Edith Cohen, Graham Cormode, Nick G. Duffield
CCS
2011
ACM
12 years 10 months ago
Policy auditing over incomplete logs: theory, implementation and applications
We present the design, implementation and evaluation of an algorithm that checks audit logs for compliance with privacy and security policies. The algorithm, which we name reduce,...
Deepak Garg, Limin Jia, Anupam Datta
PLDI
2012
ACM
12 years 1 months ago
Proving acceptability properties of relaxed nondeterministic approximate programs
Approximate program transformations such as skipping tasks [29, 30], loop perforation [21, 22, 35], reduction sampling [38], multiple selectable implementations [3, 4, 16, 38], dy...
Michael Carbin, Deokhwan Kim, Sasa Misailovic, Mar...
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