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    A Novel Recommender System for helping Marathoners to Achieve a new Personal-Best

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    RecSys '17 the Eleventh ACM Conference on Recommender Systems, Como, Italy, 27-31 August 2017We describe a novel application for recommender systems -- helping marathon runners to run a new personal-best race-time -- by predicting a challenging, but achievable target-time, and by recommending a tailored race-plan to achieve this time. A comprehensive evaluation of prediction accuracy and race-plan quality is provided using a large-scale dataset with almost 400,000 runners from the last 12 years of the Chicago marathon.Science Foundation IrelandInsight Research Centr
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