8 citations · 21 across the 9 of their papers we have counts for
10 papers
AlphaSchema: Exploring the Space of Trading Semantics for LLM-Based Alpha Mining
Jingyang Yi, Jian Yang, Yifei Jin +2
Automated alpha mining has increasingly adopted large language model (LLM) agents for factor generation and iterative discovery. However, existing LLM-based systems often delegate…
Learning Cellular Coverage from Real Network Configurations using GNNs
Yifei Jin, Marios Daoutis, Sarunas Girdzijauskas +1
Cellular coverage quality estimation has been a critical task for self-organized networks. In real-world scenarios, deep-learning-powered coverage quality estimation methods cannot…
Open World Learning Graph Convolution for Latency Estimation in Routing Networks
Yifei Jin, Marios Daoutis, Sarunas Girdzijauskas +1
Accurate routing network status estimation is a key component in Software Defined Networking. However, existing deep-learning-based methods for modeling network routing are not abl…
A Graph Attention Learning Approach to Antenna Tilt Optimization
Yifei Jin, Filippo Vannella, Maxime Bouton +2
6G will move mobile networks towards increasing levels of complexity. To deal with this complexity, optimization of network parameters is key to ensure high performance and timely…
DoubleEnsemble: A New Ensemble Method Based on Sample Reweighting and Feature Selection for Financial Data Analysis
Chuheng Zhang, Yuanqi Li, Xi Chen +3
Modern machine learning models (such as deep neural networks and boosting decision tree models) have become increasingly popular in financial market prediction, due to their superi…
AutoAlpha: an Efficient Hierarchical Evolutionary Algorithm for Mining Alpha Factors in Quantitative Investment
Tianping Zhang, Yuanqi Li, Yifei Jin +1
The multi-factor model is a widely used model in quantitative investment. The success of a multi-factor model is largely determined by the effectiveness of the alpha factors used i…
SVM via Saddle Point Optimization: New Bounds and Distributed Algorithms
Yifei Jin, Lingxiao Huang, Jian Li
We study two important SVM variants: hard-margin SVM (for linearly separable cases) and -SVM (for linearly non-separable cases). We propose new algorithms from the perspective o…
Odd Yao-Yao Graphs are Not Spanners
Yifei Jin, Jian Li, Wei Zhan
It is a long standing open problem whether Yao-Yao graphs are all spanners [li2002sparse]. Bauer and Damian [bauer2013infinite] showed that all …
Improved Algorithms For Structured Sparse Recovery
Lingxiao Huang, Yifei Jin, Jian Li +1
It is known that certain structures of the signal in addition to the standard notion of sparsity (called structured sparsity) can improve the sample complexity in several compressi…
A PTAS for the Weighted Unit Disk Cover Problem
Jian Li, Yifei Jin
We are given a set of weighted unit disks and a set of points in Euclidean plane. The minimum weight unit disk cover (\UDC) problem asks for a subset of disks of minimum total weig…