collaborators

6 papers

stat.ML2026

SPACE: Sample-cloud Predictive Adaptive Conformal Ellipsoids for Multivariate Time-Series Forecasting

Baishi Li, Kelvin J. L. Koa, Ke-Wei Huang

Modern probabilistic time-series forecasters often express uncertainty through forecast samples. While typically converted into nominal prediction regions using empirical quantiles…

cs.CL2026

The Proxy Presumption: From Semantic Embeddings to Valid Social Measures

Baishi Li, Ta Yu, Kelvin J. L. Koa +1

Natural Language Processing is rapidly evolving into a primary instrument for Computational Social Science, with researchers increasingly using embeddings to measure latent constru…

q-fin.CP2026

FinStressTS: A Parametric Synthetic Benchmark for Time-Series Forecasting in Finance

Jiaze Sun, Kelvin J. L. Koa, Ruiyang Ni +3

Financial forecasting is difficult due to low signal-to-noise ratios, latent factors, heavy tails, regime shifts, and jumps. Real-world benchmarks offer limited failure attribution…

q-fin.ST2026

Reasoning on Time-Series for Financial Technical Analysis

Kelvin J. L. Koa, Jan Chen, Yunshan Ma +2

While Large Language Models have been used to produce interpretable stock forecasts, they mainly focus on analyzing textual reports but not historical price data, also known as Tec…

cs.MA2026

FinDeepForecast: A Live Multi-Agent System for Benchmarking Deep Research Agents in Financial Forecasting

Xiangyu Li, Xuan Yao, Guohao Qi +16

Deep Research (DR) Agents powered by advanced Large Language Models (LLMs) have fundamentally shifted the paradigm for completing complex research tasks. Yet, a comprehensive and l…

q-fin.RM2025

Temporal Relational Reasoning of Large Language Models for Detecting Stock Portfolio Crashes

Kelvin J. L. Koa, Yunshan Ma, Yi Xu +3

Stock portfolios are often exposed to rare consequential events (e.g., 2007 global financial crisis, 2020 COVID-19 stock market crash), as they do not have enough historical inform…