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Jiahong Liu

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#artificial intelligence Preprint Sep 2026

Hyperbolic Multimodal Continual Learning: A Closest-Admissible Solution

Existing continual-learning methods protect parameters, replayed examples, or Euclidean feature subspaces. When applied to hyperbolic multimodal models, they do not explicitly preserve the Lorentz geometry that jointly encodes within-modality similarity, cross-modal correspondence, and semantic hierarchy; sequential up...

Jia-Hong Liu, Ming Shen, Xiao-Hao Liu et al. · 0 citations
#machine learning Preprint Aug 2026

StepKV: Step-Aware KV Cache Compression for LLM Agents

Key-value (KV) caching is essential for efficient autoregressive large language model (LLM) inference, but the cache grows linearly with context length, increasing storage and decoding costs. KV cache compression mitigates this cost by retaining only a subset of cached tokens. This challenge is particularly important f...

Bo-Yu Feng, Jia-Hong Liu, Yi-Fan Li et al. · 0 citations
Book Open access Aug 2026

Hyperbolic Learning for Structured Data, Knowledge, and Memory: A Tutorial

This lecture-style tutorial covers hyperbolic methods for data organization, retrieval, and memory layers in foundation-model systems: manifold operations, scalable neural primitives, retrieval-aware pipelines, recommendation and knowledge systems, agent memory, multimodal and scientific data modeling, and lifecycle op...

Jiahong Liu, Menglin Yang, Irwin King · 0 citations
Book Open access Aug 2026

Geometric Space, Architecture and Learning Objective for Large Pre-Trained Models

The Geometric Space, Architecture and Learning Objective for Large Pre-Trained Models (GALOP) workshop is an accepted half-day KDD 2026 workshop that examines how geometric principles can make large pretrained models more expressive, robust, interpretable, and efficient.

Meng-Lin Yang, Jia-Hong Liu, Lucas Vinh Tran et al. · 1 citation
Book Open access Aug 2026

Geometric Space, Architecture and Learning Objective for Large Pre-Trained Models

Large pretrained models have reshaped artificial intelligence, yet their Euclidean design assumptions often limit their ability to model hierarchy, curvature, symmetry, and heterogeneous relations in real-world data. The Geometric Space, Architecture and Learning Objective for Large Pre-Trained Models (GALOP) workshop...

Menglin Yang, Jiahong Liu, Lucas Vinh Tran et al. · 0 citations
Book Open access Aug 2026

Hyperbolic Learning for Structured Data, Knowledge, and Memory: A Tutorial

Foundation models are increasingly deployed as agentic data-and-memory systems built on pretrained parameters, retrieval corpora, external knowledge stores, and persistent interaction histories. For the Knowledge Discovery and Data Mining (KDD) community, this matters because recommendation, search, temporal modeling,...

Jiahong Liu, Menglin Yang, Irwin King · 0 citations
Preprint Aug 2026

FlatLand: Personalized Graph Federated Learning via Tailored Lorentz Space

This work proposes FlatLand, a novel personalized federated learning method that embeds different clients'data in tailored Lorentz space of hyperbolic geometry, and develops a parameter decoupling strategy that separates heterogeneous information from common knowledge, enabling direct aggregation without requiring clie...

Jiahong Liu, Ram Samarth, Xinyu Fu et al. · 0 citations

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