activity
20202025
most citedgen2Out: Detecting and Ranking Generalized Anomalies

1 citations · 1 across the 7 of their papers we have counts for

collaborators

8 papers

cs.LG2025

Empowering GNNs for Domain Adaptation via Denoising Target Graph

Haiyang Yu, Meng-Chieh Lee, Xiang song +2

We explore the node classification task in the context of graph domain adaptation, which uses both source and target graph structures along with source labels to enhance the genera…

cs.LG2025

FRAUDGUESS: Spotting and Explaining New Types of Fraud in Million-Scale Financial Data

Robson L. F. Cordeiro, Meng-Chieh Lee, Christos Faloutsos

Given a set of financial transactions (who buys from whom, when, and for how much), as well as prior information from buyers and sellers, how can we find fraudulent transactions? I…

cs.LG2024

HybGRAG: Hybrid Retrieval-Augmented Generation on Textual and Relational Knowledge Bases

Meng-Chieh Lee, Qi Zhu, Costas Mavromatis +5

Given a semi-structured knowledge base (SKB), where text documents are interconnected by relations, how can we effectively retrieve relevant information to answer user questions? R…

cs.LG2024

NetInfoF Framework: Measuring and Exploiting Network Usable Information

Meng-Chieh Lee, Haiyang Yu, Jian Zhang +5

Given a node-attributed graph, and a graph task (link prediction or node classification), can we tell if a graph neural network (GNN) will perform well? More specifically, do the g…

cs.SI2023

NetEffect: Discovery and Exploitation of Generalized Network Effects

Meng-Chieh Lee, Shubhranshu Shekhar, Jaemin Yoo +1

Given a large graph with few node labels, how can we (a) identify whether there is generalized network-effects (GNE) or not, (b) estimate GNE to explain the interrelations among no…

cs.LG2022

Less is More: SlimG for Accurate, Robust, and Interpretable Graph Mining

Jaemin Yoo, Meng-Chieh Lee, Shubhranshu Shekhar +1

How can we solve semi-supervised node classification in various graphs possibly with noisy features and structures? Graph neural networks (GNNs) have succeeded in many graph mining…

cs.LG2021★ 1 cited

gen2Out: Detecting and Ranking Generalized Anomalies

Meng-Chieh Lee, Shubhranshu Shekhar, Christos Faloutsos +2

In a cloud of m-dimensional data points, how would we spot, as well as rank, both single-point- as well as group- anomalies? We are the first to generalize anomaly detection in two…

cs.SI2020

AutoAudit: Mining Accounting and Time-Evolving Graphs

Meng-Chieh Lee, Yue Zhao, Aluna Wang +4

How can we spot money laundering in large-scale graph-like accounting datasets? How to identify the most suspicious period in a time-evolving accounting graph? What kind of account…