- Vaibhav Kumar, Jamie Callan. 2019. A Step towards Context Identification for Conversational Search. Abstract: e system comprises of three dierent components. e rst component makes a decision whether to incorporate contextual information for the current query in ongoing conversation. e decision is based on the KL-divergence between the retrieved documents for the original query and whether the query consists of pronouns. e second component identies the contextual information (if required) for the answering the current query. is identication is performed using an SVM classier which uses BERT aention weights along with other linguistic features. Finally, the third component utilises Indri for document retrieval.
