8503
Specifically , a reliable bispectrum mask is generated to guarantee that the speaker DOA cues , derived from BISDR , are robust to NSI in terms of speech sparsity and large bispectrum amplitude of the captured signals .
 used for: bispectrum mask, speaker DOA cues; used for: BISDR, speaker DOA cues
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  bispectrum mask, speaker DOA cues; BISDR, speaker DOA cues 
Answer:
 used for: bispectrum mask, speaker DOA cues; used for: BISDR, speaker DOA cues