Phillip Wallis — accepted AI-conference papers

2026

CausalArmor: Efficient Indirect Prompt Injection Guardrails via Causal Attribution

Minbeom Kim, Mihir Parmar, Phillip Wallis, Lesly Miculicich, Kyomin Jung, Krishnamurthy Dvijotham +2

ICML 2026poster

AI agents equipped with tool-calling capabilities are susceptible to *Indirect Prompt Injection* (IPI) attacks. In this attack scenario, malicious commands hidden within *untrusted* content trick the agent into performing unauthorized actions. Existing defenses can reduce attack success but often su…

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2025

AnoLLM: Large Language Models for Tabular Anomaly Detection

Che-Ping Tsai, Ganyu Teng, Phillip Wallis, Wei Ding

ICLR 2025poster

We introduce AnoLLM, a novel framework that leverages large language models (LLMs) for unsupervised tabular anomaly detection. By converting tabular data into a standardized text format, we further adapt a pre-trained LLM with this serialized data, and assign anomaly scores based on the negative lo…

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2025

Reinforcement Learning with Backtracking Feedback

Bilgehan Sel, Vaishakh Keshava, Phillip Wallis, Lukas Rutishauser, Ming Jin, Dingcheng Li

NeurIPS 2025poster

Addressing the critical need for robust safety in Large Language Models (LLMs), particularly against adversarial attacks and in-distribution errors, we introduce Reinforcement Learning with Backtracking Feedback (RLBF). This framework advances upon prior methods, such as BSAFE, by primarily leveragi…

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2022

LoRA: Low-Rank Adaptation of Large Language Models

Edward J Hu, yelong shen, Phillip Wallis, Zeyuan Allen-Zhu, Yuanzhi Li, Shean Wang +2

ICLR 2022poster

An important paradigm of natural language processing consists of large-scale pre-training on general domain data and adaptation to particular tasks or domains. As we pre-train larger models, full fine-tuning, which retrains all model parameters, becomes less feasible. Using GPT-3 175B as an example…

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2020

Automatic Event Detection of REM Sleep Without Atonia From Polysomnography Signals Using Deep Neural Networks

Phillip Wallis, Daniel Yaeger, Alexander Kain, Xubo Song, Miranda Lim

ICASSP 2020accepted

Rapid eye movement (REM) sleep behavior disorder (RBD) is a sleep disorder that features loss of atonia, or REM sleep without atonia (RSWA). RBD and RSWA are early manifestations of degenerative neurological diseases such as Parkinson’s and Lewy Body Dementia. Accurate diagnosis of RBD is crucial fo…

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