44 citations · 364 across the 85 of their papers we have counts for
8 papers · 1 filter
Utility Change Point Detection in Online Social Media: A Revealed Preference Framework
Anup Aprem, Vikram Krishnamurthy
This paper deals with change detection of utility maximization behaviour in online social media. Such changes occur due to the effect of marketing, advertising, or changes in groun…
Engagement dynamics and sensitivity analysis of YouTube videos
Wiliam Hoiles, Anup Aprem, Vikram Krishnamurthy
YouTube, with millions of content creators, has become the preferred destination for watching videos online. Through the Partner program, YouTube allows content creators to monetiz…
Syntactic Enhancement to VSIMM for Roadmap Based Anomalous Trajectory Detection: A Natural Language Processing Approach
Vikram Krishnamurthy, Sijia Gao
The aim of syntactic tracking is to classify spatio-temporal patterns of a target's motion using natural language processing models. In this paper, we generalize earlier work by co…
Opportunistic Advertisement Scheduling in Live Social Media: A Multiple Stopping Time POMDP Approach
Vikram Krishnamurthy, Anup Aprem, Sujay Bhatt
Live online social broadcasting services like YouTube Live and Twitch have steadily gained popularity due to improved bandwidth, ease of generating content and the ability to earn…
Tracking Infection Diffusion in Social Networks: Filtering Algorithms and Threshold Bounds
Vikram Krishnamurthy, Sujay Bhatt, Tavis Pedersen
This paper deals with the statistical signal pro- cessing over graphs for tracking infection diffusion in social networks. Infection (or Information) diffusion is modeled using the…
A Comprehensive Methodology for Volt-VAR Optimization in Active Smart Grids
Mohammad Ghasemi Damavandi, Vikram Krishnamurthy, Jose R Marti
This paper considers the problem of Volt-VAR Optimization (VVO) in active smart grids. Active smart grids are equipped with distributed generators, distributed storage systems, and…
Partially Observed Markov Decision Processes. Problem Sets and Internet Supplement
Vikram Krishnamurthy
This document is an internet supplement to my book "Partially Observed Markov Decision Processes - From Filtering to Controlled Sensing" published by Cambridge University Press in…
Filterbased Stochastic Volatility in Continuous-Time Hidden Markov Models
Vikram Krishnamurthy, Elisabeth Leoff, Jörn Sass
Regime-switching models, in particular Hidden Markov Models (HMMs) where the switching is driven by an unobservable Markov chain, are widely-used in financial applications, due to…