Publications de Xin Liu | EPFL Graph Search

Federated Reinforcement Learning for Electric Vehicles Charging Control on Distribution Networks

Wei Chen, Xin Liu, Ting Wang, Yuning Jiang

With the growing popularity of electric vehicles (EVs), maintaining power grid stability has become a significant challenge. To address this issue, EV charging control strategies have been developed to manage the switch between vehicle-to-grid (V2G) and gr ...

Ieee-Inst Electrical Electronics Engineers Inc2024

Federated Linear Bandit Learning via Over-the-air Computation

Xin Liu, Ting Wang, Yuning Jiang

In this paper, we investigate federated contextual linear bandit learning within a wireless system that comprises a server and multiple devices. Each device interacts with the environment, selects an action based on the received reward, and sends model upd ...

IEEE2023

A low-temperature prismatic slip instability in Mg understood using machine learning potentials

William Curtin, Xin Liu, Binglun Yin, Tao Liu

Prismatic slip in magnesium at temperatures T

PERGAMON-ELSEVIER SCIENCE LTD2023

Quasi-quantum dot-induced stabilization of alpha-CsPbI3 perovskite for high-efficiency solar cells

Mohammad Khaja Nazeeruddin, Xin Liu, Tom Theodorus Antonius Lummen, Yong Ding, Yuanlong Li, Cheng Liu

All-inorganic cesium lead iodide perovskites (CsPbI3) are promising materials for efficient solar cells. However, they suffer from the formation of an undesired yellow delta -phase under ambient conditions. Herein, we provide a novel strategy to in situ pr ...

Royal Society of Chemistry2020

Printed silk-fibroin-based triboelectric nanogenerators for multi-functional wearable sensing

Jürgen Brugger, Xin Liu, Xiao Sheng Zhang

The rapid development of wearable sensing technology exhibits unprecedented opportunities for artificial intelligence by establishing an interactive interface between the physical and the virtual worlds. Energy preservation and multi-functional integration ...

Elsevier2019

Optimization Of Compound Regularization Parameters Based On Stein'S Unbiased Risk Estimate

Hanjie Pan, Xin Liu, Feng Xue, Jiaqi Liu

Recently, the type of compound regularizers has become a popular choice for signal reconstruction. The estimation quality is generally sensitive to the values of multiple regularization parameters. In this work, based on BDF algorithm, we develop a data-dr ...

Ieee2017

Towards a highly effective and robust Web credibility evaluation system

Karl Aberer, Xin Liu

By leveraging crowdsourcing, Web credibility evaluation systems (WCESs) have become a promising tool to assess the credibility of Web content, e.g., Web pages. However, existing systems adopt a passive Way to collect users' credibility ratings, which incur ...

Elsevier Science Bv2015

A Generic Trust Framework For Large-Scale Open Systems Using Machine Learning

Anwitaman Datta, Xin Liu

In many large-scale distributed systems and on the Web, agents need to interact with other unknown agents to carry out some tasks or transactions. The ability to reason about and assess the potential risks in carrying out such transactions is essential for ...

Wiley-Blackwell2014

Structured Canonical Forms For Products Of (Skew-) Symmetric Matrices And The Matrix Equation XAX = B

Daniel Kressner, Xin Liu

The contragredient transformation A bar right arrow P-1 AP-(inverted perpendicular) , B bar right arrow P-inverted perpendicular BP of two matrices A, B effects simultaneous similarity transformations of the products AB and BA. This work provides structure ...

Int Linear Algebra Soc2013

Web Credibility: Features Exploration and Credibility Prediction

Karl Aberer, Alexandra Olteanu, Stanislav Peshterliev, Xin Liu

2013

Trust beyond reputation: A computational trust model based on stereotypes

Anwitaman Datta, Xin Liu

Models of computational trust support users in taking decisions. They are commonly used to guide users' judgements in online auction sites; or to determine quality of contributions in Web 2.0 sites. However, most existing systems require historical informa ...

Elsevier2013

Defending Imitating Attacks in Web Credibility Evaluation Systems

Karl Aberer, Xin Liu

2013

Towards Context-Aware Social Recommendation via Trust Networks

Xin Liu

2013

Effective Consumption Scheduling for Demand-Side Management in the Smart Grid using Non-Uniform Participation Rate

Karl Aberer, Tri Kurniawan Wijaya, Xin Liu

Periods of peak consumer demand in today’s electricity sector are expensive to satisfy and can be the source of power failures. One possible solution is the use of demand-side management (DSM) applying dynamic pricing mechanisms. However, instead of reduci ...

2013

SoCo: A Social Network Aided Context-Aware Recommender System

Karl Aberer, Xin Liu

2013

Personalized Point-of-Interest Recommendation by Mining Users' Preference Transition

Karl Aberer, Xin Liu, Yong Liu

2013

Resequencing 50 accessions of cultivated and wild rice yields markers for identifying agronomically important genes

Jeffrey David Jensen, Chang Yu, Xin Liu, Jian Wang, Jun Wang, Wen Wang, Lei Huang, Xun Xu

Rice is a staple crop that has undergone substantial phenotypic and physiological changes during domestication. Here we resequenced the genomes of 40 cultivated accessions selected from the major groups of rice and 10 accessions of their wild progenitors ( ...

Nature Publishing Group2012

QUANTIFICATION DIFFERENCES OF 1H SPECTRA IN HUMAN BRAIN AT 3 TESLA USING THE ACQUIRED MACROMOLECULE BASELINE OR THE BUILT-IN LCMODEL SPLINE BASELINE

Rolf Gruetter, Benoît Schaller, Xin Liu

2012