auto: 2026-07-10T16:19:57Z [skip ci]
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@ -21,9 +21,9 @@ These are probably what you're looking for. A summary of the key points follows
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My work clusters into three threads:
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- **Machine learning** — order-invariant ICD-10-CM embeddings (under review at *JAMA Network Open*, deployed calculator), the NeuroPose 3D-kinematics system in Liqi Shu's lab at Brown Neurology, and ongoing research engineering at [NeuroAI](https://neuroai.health). Undergraduate work has been clinically focused; graduate study broadens the scope.
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- **Machine learning** — order-invariant ICD-10-CM embeddings (under review at *JAMIA*, deployed calculator), the NeuroPose 3D-kinematics system in Liqi Shu's lab at Brown Neurology, and ongoing research engineering at [NeuroAI](https://neuroai.health). Undergraduate work has been clinically focused; graduate study broadens the scope.
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- **Computer systems and high-performance computing** — the Weenix kernel, a TCP/IP networking stack from scratch in Go, and micro-architectural performance work (SIMD, hardware counters via PAPI, RAPL energy, cross-ISA ports across AVX2 / ARM NEON-SVE / RISC-V V) on Brown's OSCAR HPC cluster.
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- **Reinforcement learning and applied AI** — a Magic: The Gathering RL project on OSCAR; production agentic-systems work at xAI on `grok-code-fast-1`; reasoning, evaluation, and red-teaming contracts with Anthropic, Mistral, and OpenAI.
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- **AI safety and applied AI** — zero-knowledge proofs for cryptographic verification of large language models, as a MARS V fellow with the [Cambridge AI Safety Hub](https://caish.org/mars) (mentored by James Petrie, Future of Life Institute); a Magic: The Gathering reinforcement-learning project on OSCAR; agentic-systems work at xAI on `grok-code-fast-1`; and reasoning, evaluation, and red-teaming contracts with Anthropic, Mistral, and OpenAI.
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Computer vision and security thread through all three but do not stand on their own.
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@ -31,12 +31,13 @@ Computer vision and security thread through all three but do not stand on their
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### Published / In Submission
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- **Shu L, Neuwirth L†, Wang X†, Zheng H†.** *Beyond Comorbidity Indices: An Order-Invariant ICD-10-CM Embedding for Readmission and Mortality Prediction.* Under review at *JAMA Network Open*, 2026. [Preprint](/essays/beyond-comorbidity-indices/) · [Calculator](https://levineuwirth.github.io/icd_embeddings/) · [Code](https://github.com/levineuwirth/icd_embeddings)
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- **Shu L, Neuwirth L†, Wang X†, Zheng H†.** *Beyond Comorbidity Indices: An Order-Invariant ICD-10-CM Embedding for Readmission and Mortality Prediction.* Under review at the *Journal of the American Medical Informatics Association* (JAMIA), 2026. [Preprint](/essays/beyond-comorbidity-indices/) · [Calculator](https://levineuwirth.github.io/icd_embeddings/) · [Code](https://github.com/levineuwirth/icd_embeddings)
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- **Neuwirth L.** *Branch-Based Local Capture in Tree-Ball Geometry: Sharp Positive and Negative Results.* Preprint, arXiv (forthcoming), May 2026. [Preprint](/essays/branch-based-local-capture-in-tree-balls/)
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- **Neuwirth L.** *Where Does SIMD Help Post-Quantum Cryptography? A Micro-Architectural Study of ML-KEM on x86 AVX2.* Technical report, Brown University Department of Computer Science, April 2026. [Report](/essays/where-does-simd-help-post-quantum-cryptography/) · [Artifact](https://git.levineuwirth.org/neuwirth/where-simd-helps)
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### In Preparation / In Progress
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- **Zero-knowledge proofs for LLM verification.** MARS V fellowship, [Cambridge AI Safety Hub](https://caish.org/mars), July–October 2026; cryptographic verification of claims about model training, inference, and deployment. Public write-up expected October 2026.
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- **[NeuroPose](/essays/neuropose/) clinical-implications manuscript.** In preparation; target submission 2026–2027.
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- **SIMD / PQC Phase 2 & Phase 3.** Hardware performance counters (PAPI), RAPL energy, and cross-ISA ports (ARM NEON/SVE, RISC-V V).
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- **Semantic-embeddings citation project.** Early-stage work with [NeuroAI](https://neuroai.health), preprint expected summer 2026.
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@ -45,17 +46,18 @@ Computer vision and security thread through all three but do not stand on their
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### Presentations
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- **Early Detection of Neurological Disorders through Video-Captured Kinematic Analysis.** Ma J, Arms S, Kaneira L, Lall M, Chen K, Cabral W, Man D, Neuwirth L, Shu L. Poster, Brown / Rhode Island Hospital Neurology Summer UTRA Symposium, August 2025.
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- **"Order-Invariant ICD-10-CM Embedding for Readmission and Mortality Prediction: Toward Multimodal Generative Patient Models"**Shu L, Neuwirth L†, Wang X†, Zheng H†. IEEE/ACM Conference on Connected Health: Applications, Systems and Engineering Technologies (CHASE), August 2026, in review.
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- **"Order-Invariant ICD-10-CM Embedding for Readmission and Mortality Prediction: Toward Multimodal Generative Patient Models"**Shu L, Neuwirth L†, Wang X†, Zheng H†. IEEE/ACM Conference on Connected Health: Applications, Systems and Engineering Technologies (CHASE), August 2026, accepted.
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†Equal-contribution undergraduate authors.
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## Experience
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See [resume (PDF)](/resume.pdf).
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- **xAI** Summer 2025, remote. Contributed to training of `grok-code-fast-1`. Integrated LLMs into autonomous agent frameworks spanning 20 tools across thousands of production workflows and codebases; diagnosed and resolved 50+ agentic failures, improving tool-execution rates by >15%, reducing fatal tool-usage errors by >40%, and reducing API usage by >20%. Contributed to safety systems, reducing hallucination rates by >50% in controlled agent-behavior tests.
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- **NeuroAI** Present. [neuroai.health](https://neuroai.health). Early-stage venture of academics and clinicians integrating deep learning, reinforcement learning, and generative AI into clinical and research workflows; leading research-engineering across model development, deployment infrastructure, and system design.
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- **Cambridge AI Safety Hub** — *MARS V Fellow.* July – October 2026, Cambridge, UK. Selected for [MARS V](https://caish.org/mars), a competitive part-time AI-safety research fellowship; working under James Petrie (Future of Life Institute) on zero-knowledge proofs for cryptographic verification of large language models.
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- **Shu Laboratory, Brown Department of Neurology** — *Undergraduate Researcher and Technical Lead.* October 2023 – Present. Technical lead on [NeuroPose](/essays/neuropose/); co-lead developer on the [ICD-10-CM embedding model](/essays/beyond-comorbidity-indices/).
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- **Independent Research Contracting** — *Anthropic, Mistral, OpenAI.* 2025 – Present Expert reasoning contributions in code and mathematics for agentic workflows, agentic task design and evaluation, AI safety, and red-teaming.
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- **NeuroAI** Present. [neuroai.health](https://neuroai.health). Early-stage venture of academics and clinicians integrating deep learning, reinforcement learning, and generative AI into clinical and research workflows; leading research-engineering across model development, deployment infrastructure, and system design.
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- **xAI** Summer 2025, remote. Contributed to the training of `grok-code-fast-1`, xAI's agentic coding model; built LLM integrations into autonomous agent frameworks and resolved 50+ agentic tool-execution failures.
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- **Independent Research Contracting** — *Anthropic, Mistral, OpenAI.* 2025 – Present. Expert reasoning contributions in code and mathematics for agentic workflows, agentic task design and evaluation, AI safety, and red-teaming.
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## Selected Projects
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@ -20,6 +20,6 @@ Index of engineering artifacts. Systems depth is the primary axis of this page;
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## Machine Learning & Deployed
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- **[ICD-10-CM outcome calculator](https://levineuwirth.github.io/icd_embeddings/)** · [Preprint](/essays/beyond-comorbidity-indices/) · [Code](https://github.com/levineuwirth/icd_embeddings)\
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Public, read-only calculator for the permutation-invariant Deep Sets model underlying the paper currently under review at *JAMA Network Open*. Takes a diagnosis-code set; returns 30-day readmission and postdischarge mortality predictions with Integrated-Gradients attribution.
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Public, read-only calculator for the permutation-invariant Deep Sets model underlying the paper currently under review at *JAMIA*. Takes a diagnosis-code set; returns 30-day readmission and postdischarge mortality predictions with Integrated-Gradients attribution.
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- **[NeuroPose](/essays/neuropose/)**\
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3D pose-estimation and kinematic-analysis system for neurological-recovery research in Liqi Shu's laboratory at Brown Neurology. Python/TensorFlow inference pipeline, MATLAB-based statistical post-processing, Rust backend with HTML/JS frontends. 20,000+ lines across four externally-funded sub-projects since 2023.
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