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Table 5: 
Important Features for KNN Search using KIF. Salient conversation features improve performance on both datasets.
ModelValid F1
Wizard of Wikipedia 
Previous Utterance Only 24.6 
+ dialog Context 26.4 
+ Turn Embedding 27.4 
 
Engaging ImageChat 
Previous Utterance Only 13.3 
+ dialog Context 14.5 
+ Turn Embedding + Personality 15.1 
ModelValid F1
Wizard of Wikipedia 
Previous Utterance Only 24.6 
+ dialog Context 26.4 
+ Turn Embedding 27.4 
 
Engaging ImageChat 
Previous Utterance Only 13.3 
+ dialog Context 14.5 
+ Turn Embedding + Personality 15.1 
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