Customer-obsessed science
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July 30, 20268 min readInstead of compromising among parameter updates dictated by different training objectives, ControlG allocates computational capacity to objectives sequentially and dynamically.
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July 9, 202610 min read
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Featured news
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ColdGuess: A general and effective relational graph convolutional network to tackle cold start casesKDD 2022 Workshop on Mining and Learning with Graphs2022Low-quality listings and bad actor behavior in online retail websites threatens e-commerce business as these result in sub-optimal buying experience and erode customer trust. When a new listing is created, how to tell it has good quality? Is the method effective, fast, and scalable? Previous approaches often face three limitations/challenges: (1) unable to handle cold start problems where new sellers/listings
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RecSys 2022 Workshop on CONSEQUENCES – Causality, Counterfactuals and Sequential Decision-Making2022Adaptive experimental design methods are increasingly being used in industry as a tool to boost testing throughput or reduce experimentation cost relative to traditional A/B/N testing methods. This paper shares lessons learned regarding the challenges and pitfalls of naively using adaptive experimentation systems in industrial settings where non-stationarity is prevalent, while also providing perspectives
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RecSys 2022 Workshop on CONSEQUENCES – Causality, Counterfactuals and Sequential Decision-Making2022We propose diagnostics, based on control variates, to detect data quality issues in logged bandit feedback data, which is of critical importance for accurate offline evaluation and training of recommendation policies. Our diagnostics can provably detect two common types of data issues: (1) when the policy that logged the data was insufficiently randomized; (2) when the logged propensity values are incorrect
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CONSEQUENCES+REVEAL 20222022A critical need for industrial recommender systems is the ability to evaluate recommendation policies offline, before deploying them to production. Unfortunately, widely used off-policy evaluation methods either make strong assumptions about how users behave that can lead to excessive bias, or they make fewer assumptions and suffer from large variance. We tackle this problem by developing a new estimator
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UAI 20222022Despite the increasing relevance of forecasting methods, causal implications of these algorithms remain largely unexplored. This is concerning considering that, even under simplifying assumptions such as causal sufficiency, the statistical risk of a model can differ significantly from its causal risk. Here, we study the problem of causal generalization—generalizing from the observational to interventional
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