Relevance Feedback and Deep Neural Network-Based Semantic Method for Query Expansion

Table 14

Sample queries and their expansion terms.

Query No.	Original query	Expansion terms	No. of RF relevant documents
Q130	Price hike of petroleum products	Litre, oil, rs, petrol, prices, increase, crude, rise, minister, fuel	17
Q132	Barack Obama’s victory	Day, celebration, president, Americans, public, bond, mr, Tuesdays, hindrance, small, democrat, African-American, chanted, elect	7
Q139	Vanquishing the Somali pirates	Coast, strengthen, forces, three, send, seized, holding, tribal, hijacked, Aden, arrest, several, vessel, vessels	13
Q150	Bill Gates’ philanthropic endeavours	Dropped, billions, friends, India, international, hundreds, Melinda, Buffett, corporation, retire, next, foundation	4
Q160	Iraq War 2003	International, likely, took, fees, early, visit, claims, plunged, people, believe, 1991, within, opposition, badly, measures, Maliki	4