Ya Xu

Title: Innovations and Contributions of Inventor Ya Xu

Introduction

Ya Xu is a prominent inventor based in Los Altos, California. He has made significant contributions to the field of technology, particularly in the areas of service-level metrics and privacy in data selection. With a total of seven patents to his name, Xu's work has had a substantial impact on how data is analyzed and utilized in various applications.

Latest Patents

One of Xu's latest patents is focused on A/B testing of service-level metrics. The disclosed embodiments provide a system for performing A/B testing of service-level metrics. During operation, the system obtains service-level metrics for service calls made during an A/B test, wherein the service-level metrics are aggregated by user identifiers of multiple users. Next, the system matches the service-level metrics to treatment assignments of the users to a treatment group and a control group in the A/B test. The system then applies the A/B test to a first grouping of the service-level metrics for the treatment group and a second grouping of the service-level metrics for the control group. Finally, the system outputs a result of the A/B test for use in assessing an effect of a treatment variant in the A/B test on the service-level metrics.

Another notable patent is related to differentially private top-k selection. Techniques for ensuring differential privacy in top-K selection are provided. In one technique, multiple items and multiple counts are identified in response to a query. For each count, which corresponds to a different item, a noise value is generated and added to the count to generate a noisy value, and the noisy value is added to a set of noisy values that is initially empty. A particular noise value is generated for a particular count and added to the particular count to generate a noisy threshold. The particular noise value is generated using a different technique than the technique used to generate each noise value in the set. Based on the noisy threshold, a subset of the noisy values is identified, where each noisy value in the subset is less than the noisy threshold. A response to the query is generated that excludes items that correspond to the subset.

Career Highlights

Ya Xu is currently employed at Microsoft Technology Licensing, LLC, where he continues to innovate and develop new technologies. His work at Microsoft has allowed him to collaborate with some of the brightest minds in the industry.

Collaborations

Some of his notable coworkers include Weitao Du