9816
We also propose an efficient eigenvector solver which not only reduces the computational cost of spectral clustering by many folds but also improves the clustering quality and final classification results .
 used for: eigenvector solver, spectral clustering; evaluate for: computational cost, spectral clustering; evaluate for: clustering quality, spectral clustering; evaluate for: classification results, spectral clustering
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 used for: eigenvector solver, spectral clustering; evaluate for: computational cost, spectral clustering; evaluate for: clustering quality, spectral clustering; evaluate for: classification results, spectral clustering