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CHI
2005
ACM
16 years 7 months ago
An experiment in discovering personally meaningful places from location data
As mobile devices become location-aware, they offer the promise of powerful new applications. While computers work with physical locations like latitude and longitude, people thin...
Changqing Zhou, Pamela J. Ludford, Dan Frankowski,...
STOC
2007
ACM
94views Algorithms» more  STOC 2007»
16 years 6 months ago
Constructing non-computable Julia sets
While most polynomial Julia sets are computable, it has been recently shown [12] that there exist non-computable Julia sets. The proof was non-constructive, and indeed there were ...
Mark Braverman, Michael Yampolsky
VLDB
2009
ACM
165views Database» more  VLDB 2009»
16 years 6 months ago
Online pairing of VoIP conversations
This paper answers the following question; given a multiplicity of evolving 1-way conversations, can a machine or an algorithm discern the conversational pairs in an online fashio...
Michail Vlachos, Aris Anagnostopoulos, Olivier Ver...
SIGMOD
2003
ACM
141views Database» more  SIGMOD 2003»
16 years 6 months ago
QC-Trees: An Efficient Summary Structure for Semantic OLAP
Recently, a technique called quotient cube was proposed as a summary structure for a data cube that preserves its semantics, with applications for online exploration and visualiza...
Laks V. S. Lakshmanan, Jian Pei, Yan Zhao
PODS
2003
ACM
118views Database» more  PODS 2003»
16 years 6 months ago
Numerical document queries
A query against a database behind a site like Napster may search, e.g., for all users who have downloaded more jazz titles than pop music titles. In order to express such queries,...
Helmut Seidl, Thomas Schwentick, Anca Muscholl