Search Results for author: Xiaotong Liu

Found 10 papers, 3 papers with code

Weighted Spectral Filters for Kernel Interpolation on Spheres: Estimates of Prediction Accuracy for Noisy Data

no code implementations16 Jan 2024 Xiaotong Liu, Jinxin Wang, Di Wang, Shao-Bo Lin

In this paper, we introduce a weighted spectral filter approach to reduce the condition number of the kernel matrix and then stabilize kernel interpolation.

Image Reconstruction

Data Drift Monitoring for Log Anomaly Detection Pipelines

no code implementations17 Oct 2023 Dipak Wani, Samuel Ackerman, Eitan Farchi, Xiaotong Liu, Hau-wen Chang, Sarasi Lalithsena

Logs enable the monitoring of infrastructure status and the performance of associated applications.

Anomaly Detection

Towards More Efficient Depression Risk Recognition via Gait

no code implementations10 Oct 2023 Min Ren, Muchan Tao, Xuecai Hu, Xiaotong Liu, Qiong Li, Yongzhen Huang

Gait is a complex form of motion, and hand-crafted gait features often only capture a fraction of the intricate associations between gait and depression risk.

Adaptive Distributed Kernel Ridge Regression: A Feasible Distributed Learning Scheme for Data Silos

no code implementations8 Sep 2023 Di Wang, Xiaotong Liu, Shao-Bo Lin, Ding-Xuan Zhou

Data silos, mainly caused by privacy and interoperability, significantly constrain collaborations among different organizations with similar data for the same purpose.

Decision Making regression

Hard negative examples are hard, but useful

1 code implementation ECCV 2020 Hong Xuan, Abby Stylianou, Xiaotong Liu, Robert Pless

We offer a simple fix to the loss function and show that, with this fix, optimizing with hard negative examples becomes feasible.

Image Retrieval Metric Learning +3

An Empirical Study of Factors Affecting Language-Independent Models

no code implementations30 Dec 2019 Xiaotong Liu, Yingbei Tong, Anbang Xu, Rama Akkiraju

Scaling existing applications and solutions to multiple human languages has traditionally proven to be difficult, mainly due to the language-dependent nature of preprocessing and feature engineering techniques employed in traditional approaches.

Feature Engineering General Classification +2

Policy Continuation with Hindsight Inverse Dynamics

1 code implementation NeurIPS 2019 Hao Sun, Zhizhong Li, Xiaotong Liu, Dahua Lin, Bolei Zhou

This approach learns from Hindsight Inverse Dynamics based on Hindsight Experience Replay, enabling the learning process in a self-imitated manner and thus can be trained with supervised learning.

Reinforcement Learning (RL)

Visualizing How Embeddings Generalize

1 code implementation16 Sep 2019 Xiaotong Liu, Hong Xuan, Zeyu Zhang, Abby Stylianou, Robert Pless

Deep metric learning is often used to learn an embedding function that captures the semantic differences within a dataset.

Metric Learning

Characterizing machine learning process: A maturity framework

no code implementations12 Nov 2018 Rama Akkiraju, Vibha Sinha, Anbang Xu, Jalal Mahmud, Pritam Gundecha, Zhe Liu, Xiaotong Liu, John Schumacher

For example, existing machine learning processes cannot address how to define business use cases for an AI application, how to convert business requirements from offering managers into data requirements for data scientists, and how to continuously improve AI applications in term of accuracy and fairness, and how to customize general purpose machine learning models with industry, domain, and use case specific data to make them more accurate for specific situations etc.

BIG-bench Machine Learning Fairness +1

Challenge AI Mind: A Crowd System for Proactive AI Testing

no code implementations21 Oct 2018 Siwei Fu, Anbang Xu, Xiaotong Liu, Huimin Zhou, Rama Akkiraju

The evaluation shows that the crowd workflow is more effective with the help of machine learning techniques.

BIG-bench Machine Learning

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