1. PERSONALIZED AND EFFICIENT TOP-K SPATIAL OBJECT RECOMMENDATION IN LOCATION BASED SOCIAL NETWORKS Open Access Author: Gupta, Gaurav Title: PERSONALIZED AND EFFICIENT TOP-K SPATIAL OBJECT RECOMMENDATION IN LOCATION BASED SOCIAL NETWORKS Graduate Program: Computer Science and Engineering Keywords: location based social networksrecommendation systemssocial network analysiscollaborative filteringspatial databases File: Download GAURAV_GUPTA.pdf Committee Members: Wang Chien Lee, Thesis Advisor/Co-AdvisorWang Chien Lee, Thesis Advisor/Co-Advisor