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» Hierarchies for semantic classes
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CVPR
2010
IEEE
15 years 5 months ago
Exploiting Simple Hierarchies for Unsupervised Human Behavior Analysis
We propose a data-driven, hierarchical approach for the analysis of human actions in visual scenes. In particular, we focus on the task of in-house assisted living. In such scenar...
Fabian Nater, Helmut Grabner, Luc Van Gool
KR
2004
Springer
15 years 3 months ago
Ontological Knowledge Base Reasoning with Sort-Hierarchy and Rigidity
Although sorts and unary predicates are semantically identical in order-sorted logic, they are classified as different kinds of properties in formal ontology (e.g. sortal and non...
Ken Kaneiwa, Riichiro Mizoguchi
RIA
2008
73views more  RIA 2008»
14 years 9 months ago
Representing and Manipulating Situation Hierarchies using Situation Lattices
Situations, the semantic interpretations of context, provide a better basis for selecting adaptive behaviours than context itself. The definition of situations typically rests on t...
Juan Ye, Lorcan Coyle, Simon A. Dobson, Paddy Nixo...
CSR
2007
Springer
15 years 3 months ago
Inverting Onto Functions and Polynomial Hierarchy
The class TFNP, defined by Megiddo and Papadimitriou, consists of multivalued functions with values that are polynomially verifiable and guaranteed to exist. Do we have evidence ...
Harry Buhrman, Lance Fortnow, Michal Koucký...
MST
2010
83views more  MST 2010»
14 years 8 months ago
Does the Polynomial Hierarchy Collapse if Onto Functions are Invertible?
The class TFNP, defined by Megiddo and Papadimitriou, consists of multivalued functions with values that are polynomially verifiable and guaranteed to exist. Do we have evidence ...
Harry Buhrman, Lance Fortnow, Michal Koucký...