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Articles by Chengwei Su
Associations of childhood-to-adulthood body size trajectories with dementia risk and brain structural imaging markers: a study from UK Biobank
Abstract Background: Childhood and adulthood adiposity may influence dementia risk and brain structure; however, their life-course interplay and potential sex-specific effects remain incompletely understood. Methods: We analyzed 488,397 UK Biobank participants with self-reported comparative body size at age 10 (categorized as thinner, average, or plumper relative to peers) and measured adulthood BMI, followed prospectively for incident dementia.
An interactive framework for image retrieval
While online shopping, customers often see a product that they have a preference for, but do not purchase it due to not liking a few aspects of the product (e.g., sleeve type or stripe colors on a shirt), and thus have to continue their search. Instead, if the customer were to select a preferred product and issue a modification query, and the system could find a similar product with the desired modification, then the customer would be more likely to find their ideal product with less exploration.
Ge Yu
Are you excited by the disruptive potential of cutting-edge technology in the cloud? Do you want to deliver solutions to benefit our customers based on Generative AI (GenAI)? Amazon Web Services (AWS) is looking for an outstanding applied scientist in Great China Region (GCR). The candidate will work in GCR Solution Center to build challenging GenAI solutions for Chinese customers.
Introducing deep reinforcement learning to NLU ranking tasks
Project Kuiper is an initiative to launch a constellation of Low Earth Orbit satellites that will provide low-latency, high-speed broadband connectivity to unserved and underserved communities around the world. We are searching a candidate with astrodynamics expertise in spaceflight operations and ground systems software development. This position requires experience in software development for astrodynamics applications and expertise in supporting mission workflow for satellite operations.
How important are visual features for visual grounding? It depends
Multi-modal transformer solutions have become the mainstay of visual grounding, where the task is to select a specific object in an image based on a query. In this work, we explore and quantify the importance of CNN derived visual features in these transformers, and test whether these features can be replaced by a semantically driven approach using a scene graph.
Amazon's 36 ICASSP papers touch on everything audio
The International Conference on Acoustics, Speech, and Signal Processing (ICASSP) starts next week, and as Alexa principal research scientist Ariya Rastrow explained last year, it casts a wide net. The topics of the 36 Amazon research papers at this year’s ICASSP range from the classic signal-processing problems of noise and echo cancellation to such far-flung problems as separating song vocals from instrumental tracks and regulating translation length.
Distributed “Re-Ranker” Ensures That Alexa Improvements Reach Customers ASAP
Suppose that you say to Alexa, “Alexa, play Mary Poppins.” Alexa must decide whether you mean the book, the video, or the soundtrack. How should she do it? Each of Alexa’s core domains — such as the Books domain, the Video domain, or the Music domain — has its own natural-language-understanding (NLU) model, which estimates the likelihood that a given request is intended for it. But those models are trained on different data, so there’s no guarantee that their probability estimates are compatible.
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