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An Investigation into Guest Movement in the Smart Party



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An Investigation into Guest Movement in the Smart Party Jason Stoops jstoops ucla edu Faculty advisor Dr Peter Reiher Outline Project Introduction Key metrics and values Mobility Models Methods of Testing Results Analysis What is the Smart Party Ubiquitous computing application Someone hosts a gathering Guests bring wireless enabled devices Devices in the same room cooperate to select and supply media to be played Songs played in a room represent tastes of guests present in that room Project Motivation Are there ways to move between rooms in the party that can lead to greater satisfaction in terms of music heard Can we ultimately recommend a room for the user What other interesting tidbits about the Smart Party can we come up with along the way Smart Party Simulation Program Basis for evaluating mobility models rules of movement Real preference data from Last FM is used Random subsets of users and songs chosen Many parties with same conditions are run with different subsets to gather statistics about the party Initial challenge extend existing simulation to support multiple rooms Metrics Satisfaction based on 0 5 star rating Rating determined by play count Exponential scale k star rating 2k satisfaction 0 star rating 0 satisfaction song unknown Fairness distribution of satisfaction Gini Coefficient usually used for measuring distribution of wealth in a population In Smart Party wealth satisfaction Ratio between 0 to 1 lower is more fair Key values History Length Number of previously heard songs the user device will track Used to evaluate satisfaction with current room Satisfaction Threshold Used as a guide for when guest should consider moving If average satisfaction over last history length songs falls below sat threshold guest considers moving Mobility Models Tested No movement Random movement Threshold based random movement Threshold based to least crowded room Threshold based population weighted Threshold based highest satisfaction Test Procedure Round 1 Broad



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