no code implementations • 28 Apr 2022 • Sijia Li, Gaopeng Gou, Chang Liu, Chengshang Hou, Zhenzhen Li, Gang Xiong
In this paper, we propose a Temporal Transaction Aggregation Graph Network (TTAGN) to enhance phishing scams detection performance on Ethereum.
1 code implementation • 15 Mar 2022 • Sijia Li, Martín López-García, Neil D. Lawrence, Luisa Cutillo
Unfortunately, the original Bigraphical Lasso algorithm is not applicable in case of large p and n due to memory requirements.
no code implementations • 26 Nov 2021 • Lik-Hang Lee, Zijun Lin, Rui Hu, Zhengya Gong, Abhishek Kumar, Tangyao Li, Sijia Li, Pan Hui
The metaverse, enormous virtual-physical cyberspace, has brought unprecedented opportunities for artists to blend every corner of our physical surroundings with digital creativity.
no code implementations • 9 Oct 2020 • Sijia Li, Xiudi Li, Alex Luedtke
We discuss the thought-provoking new objective functions for policy learning that were proposed in "More efficient policy learning via optimal retargeting" by Nathan Kallus and "Learning optimal distributionally robust individualized treatment rules" by Weibin Mo, Zhengling Qi, and Yufeng Liu.
no code implementations • 18 May 2020 • Jia Xue, Junxiang Chen, Chen Chen, Chengda Zheng, Sijia Li, Tingshao Zhu
The study aims to understand Twitter users' discourse and psychological reactions to COVID-19.