Keyphrases
- np hard
- recognition rate
- recognition accuracy
- optimal solution
- feature extraction
- object recognition
- special case
- graph representation
- closely related
- activity recognition
- scheduling problem
- automatic recognition
- pattern recognition
- directed graph
- graph structure
- graph model
- approximation algorithms
- handwritten characters
- np complete
- linear programming
- worst case
- maximum weight
- computational complexity
- preprocessing stage
- spanning tree
- image recognition
- lower bound
- graph theory
- weighted graph
- directed acyclic graph
- graph mining
- character recognition
- minimum cost
- integer programming
- recognition algorithm
- visual recognition
- neural network
- connected components
- image matching
- d objects