Pierre-Guillaume Sprimont

Engram — Local AI Platform for Android

A complete AI platform running entirely on the phone: a LiteRT-LM engine (Gemma-family, 4-bit, GPU), a token-aware agent with tools, a long-term semantic memory with photos and EXIF metadata, personas, and a family of mini-apps (Vision, Voice, Summarizer, Memory). An optional OpenAI-compatible cloud mode bridges to DeepSeek and friends — opt-in only.

• Engine + agent + tools + two HTTP servers, all in one foreground service.
• Semantic / full-text / tag / temporal memory search; memories carry photos with date & GPS as separate metadata.
• Preventive KV-cache management and silent overflow recovery — the chat never crashes.
• Multi-APK architecture: every mini-app talks to the brain over a local HTTP API.

[ project page ] [ source ]

ExecAI — Sovereign, Memory-Driven AI Agent

A modular agent framework that runs on your own local models (Ollama, llama.cpp) or in the cloud (DashScope/Qwen, DeepSeek) without changing a line of code — with a real long-term memory that learns from every session.

• Hybrid RAG memory: ChromaDB + BM25 + temporal decay, automatic distillation of durable facts, deduplication/merging.
• Hardened file tools (atomic writes, checksums, binary detection), context-overflow protection per backend, graduated safety modes (plan / edit / auto / PARANOID).
• Full test-bench, MIT, 100% offline-capable on modest hardware.

[ project page ] [ source ]

Edge AI & Industrial Vision

• TensorFlow models for real-time people and object detection on Paris metro access-control gates (CAN Bus).
• Industrial quality-control pipelines with Halcon and OpenCV, coupled with B&R motor control.
• CUDA / TensorRT / quantization work for constrained hardware.

Université de Liège — PhD Fellow & Scientific Attaché (2003–2011)

Observational cosmology and software for the XMM-LSS survey — one of the deepest X-ray surveys of the large-scale structure of the Universe — and the ILMT (International Liquid Mirror Telescope) project. I built the C++ spectroscopy and imaging pipelines that turned raw telescope frames into published science: optical follow-up of X-ray-selected galaxy clusters and AGN, faint-object photometry, web interfaces for data distribution.

• DEA (postgraduate diploma) in Astrophysics — C++ spectroscopy software, 2005.
• Co-author on three Astronomy & Astrophysics papers (XMM-LSS clusters, AGN classification, the quadruply-imaged quasar HE 0435–1223).
• La géométrie de Lobachevski — Revue des Questions Scientifiques, 2011.

INAF / IASF Bologna — Research Fellow (2012–2015)

Robotic-telescope interfaces, astronomical camera drivers and an astrophysical image database, with P2P data sharing and HTML5/WebGL visualisation — astronomy for the web, a decade before everyone else noticed. In parallel: GRBspec at IAA-CSIC (Granada), the gamma-ray-burst spectroscopic follow-up database, and the NILDE inter-library system at CNR Bologna.

Outreach

Public sky-watching events and astronomy outreach since 2002 — including teaching Earth & Life Sciences at the Lycée Français Anna de Noailles in Bucharest (2016–2017).

GENDARED — Generic Data Reduction Framework

Principal developer of the data-reduction, detection and tracking framework for orbital objects observed from optical telescopes. Prototyped under the ESA Romanian Industry Incentive Scheme, GENDARED became a reference pipeline of the European space-surveillance ecosystem — cited in international peer-reviewed publications.

• WRLagez1 (EU SST) — delivery to OHB Digital and the German military SST Centre.
• GRNOC, RONOCOPS, ROSSA — software delivery and data-processing services within the COSST consortium.
• DEVISE — ESA study on faint-object analysis.
• Presented at the 8th European Conference on Space Debris (ESA/ESOC, 2021).