Portrait of Jiecheng Lu

Jiecheng Lu

Ph.D. candidate in Machine Learning at Georgia Tech (ISyE), advised by Prof. Shihao Yang.

I work on how sequence models read context, store knowledge, and rewrite their own weights, toward self-improving LLMs, agents, and AGI.

Today’s foundation models stop learning when training ends. I study parametric memory, the knowledge a model keeps in its weights, as the route to continual learning, LLM self-improvement, and recursive self-improvement in agentic systems.

It builds on my architecture work, which makes sequence models for LLMs and time series more expressive under practical compute constraints, across attention, linear attention, and dynamic MLPs. Since 2024, I have published 10 papers as the main contributor at ICLR, ICML, and NeurIPS.

Illustrative causal attention over the sentence, decoded one word at a time. Hover overTap a word to see what it attends to.

One question runs through my work: how a model holds what it has seen and puts it to use. The papers below answer it in the context; my current work asks it of the weights, as noted under each line, along with how pretraining stores knowledge there and why that stored knowledge can override the context.

NextGen sequence modeling

LLM pretraining, efficient and expressive attention, and dynamic MLPs

Dynamic MLPs already instantiate weights from the context; I now ask how a model can keep such writes in its own weights once the context is gone.

Attention meets dynamical systems

VAR/ARMA attention and symplectic position encoding beyond RoPE

ARMA attention already models the errors of its own past predictions; I now use error-driven updates of this kind to write new knowledge into a model's weights.

Forecasting for real-world decisions

In-context, multivariate, and distribution-valued time series

ICTSP already learns to forecast from examples in its context; I now ask when what a model learns in context should move into its weights.

Research translation

CDC FluSight forecasting hub

Submit weekly influenza hospitalization forecasts for all U.S. states to the CDC FluSight forecasting hub (entry name: Gatech-ensemble), translating time-series forecasting research into public-health decision support.

Co-author of Multi-season evaluation and analysis of categorical trend forecasts of influenza hospital admissions in the United States (medRxiv preprint, 2026; submitted to Nature Communications).

Fall 2024–Present

* Corresponding author.

Research leadership and mentoring

Since Fall 2024, I have organized a Georgia Tech undergraduate Sequential AI team, leading each project through the full research cycle, from idea to publication.

Yubin Kim ZeroS (NeurIPS 2025), StretchTime (ICML 2026); 1 ICLR 2027 submission now Ph.D. student in OR, MIT
Viresh Pati ZeroS (NeurIPS 2025), StretchTime (ICML 2026); 1 ICLR 2027 submission now Ph.D. student in CS, UPenn
Jevon Twitty StretchTime (ICML 2026); 3 ICLR 2027 submissions undergraduate, graduating 2027
Vinh Pham StretchTime (ICML 2026); 3 ICLR 2027 submissions undergraduate, graduating 2028

Teaching

ISyE 4031 Regression and Forecasting

Independent Instructor, Georgia Institute of Technology

Three sections (one in person, two online), 58 students in 28 project teams. Participant in Georgia Tech's Tech to Teaching program; completed CETL 8717 Course Design for Higher Education.

Summer 2026

Honors and grants

All awards

Fellowships and awards

Computing grants

Lambda Research Grant, PI

Subquadratic HyperMLP via Convolution-Based Sequence Mixing

Mar 2026–Mar 2027
NVIDIA Academic Grant, awarded project

Scaling Zero-Sum Linear Attention for Cross-Modal Foundation Models

Apr 2026–Sep 2026
NSF ACCESS Program, awarded project

Advanced Transformer-based Models for Long-term Time Series Forecasting

Sep 2025–Sep 2026