Найденные страницы с тегом life science informatics всего 193363

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Quantifying intrinsic causal contributions via structure preserving interventions - Amazon Science

We propose a notion of causal influence that describes the ‘intrinsic’ part of the contribution of a node on a target node in a DAG. By recursively writing each node as a function of the upstream noise terms, we separate the intrinsic information added by each node from the one obtained from its…

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Effect size estimation for duration recommendation in online experiments: Leveraging hierarchical models and objective utility approaches - Amazon Science

The selection of the assumed effect size (AES) critically determines the duration of an experiment, and hence its accuracy and efficiency. Traditionally, experimenters determine AES based on domain knowledge. However, this method becomes impractical for online experimentation services managing…

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Neural ode for multi-channel attribution - Amazon Science

Multi-Touch Attribution plays a crucial role in both marketing and advertising, offering insight into the complex series of interactions within customer journeys during transactions or impressions. This holistic approach empowers marketers to strategically allocate attribution credits for…

Multi-modal hallucination control by visual information grounding - Amazon Science

Generative Vision-Language Models (VLMs) are prone to generate plausible-sounding textual answers that, however, are not always grounded in the input image. We investigate this phenomenon, usually referred to as “hallucination” and show that it stems from an excessive reliance on the language…

Hierarchical query classification in e-commerce search - Amazon Science

E-commerce platforms typically store and structure product information and search data in a hierarchy. Efficiently categorizing user search queries into a similar hierarchical structure is paramount in enhancing user experience on e-commerce platforms as well as news curation and academic research.…

How Thomas Hoe helps Amazon understand European customers - Amazon Science

The principal economist and his team address unique challenges using techniques at the intersection of microeconomics, statistics, and machine learning.

Pessimistic off-policy multi-objective optimization - Amazon Science

Multi-objective optimization is a class of optimization problems with multiple conflicting objectives. We study offline optimization of multi-objective policies from data collected by a previously deployed policy. We propose a pessimistic estimator for policy values that can be easily plugged into…

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