Matt Priselac

Notes · the lab notebook

Every entry, newest first

Dev diaries, experiment logs and method notes from all four projects in one place, including the experiments that didn’t work.

2026

Peloton · Live · 13 October 2026Where it stands38 races, 102 prediction pages and 110 settled units, with the Tour of Guangxi live. Research · Dev diary · October 12–15What belief needsA reading of four recent papers on belief in LLMs went alongside a probing study of models’ hidden states, with an AI referee reviewing the synthesis over three rounds. Research · Method · October 3–14The strength era, and the ladderI founded the StrengthProject on October 3. Peloton · Dev diary · 2–6 October 2026Races with no marketEvery agent moves to Opus 5.5, with the results acquirer on Sonnet 5.5. Research · Experiment log · September 21–28The implicit-credence programA research detour with its own agenda. Peloton · Dev diary · 16–22 September 2026No human setupThe “no-human-setup wave”: a stage race no longer needs a hand-written config, a capture step on my own machine hands the cloud what it can’t fetch itself, and the nightly run reaches a published board on its own. Homegreens · Experiment log · Sep – Oct 2026Measuring the classifier, then replacing itThe most recent chapter is the one closest to my research. Research · Dev diary · September 14–21The DoxasticLayer, rebuilt from a toyAfter a two-week pause I opened a third branch. Peloton · Live · 13 September 2026Level with the marketThe Vuelta closes. Peloton · Dev diary · 5–7 September 2026Building the nightly crewThe project gets an agent architecture. Research · Experiment log · August 27–30Canonicalization gets demotedWindow 3 (nine of nine runs clean) produced K06 UNIFIES for the first time: a test case that had failed for a week now succeeded. Research · Experiment log · August 18–25The identity problem takes overThe first realistic “generation window” ran ten conversation set-ups, four replicates each, across mixed model families, and captured 40,344 boundary pairs. Research · Experiment log · August 15–17The benchmark that said noOn August 15 I restated the charter: the system is an instrument for exploring doxastic norms, not a solver of their hard problems. Peloton · Experiment log · 8–9 August 2026Knowing what kind of day it isThe Tour’s lesson becomes a program: an eleven-item menu of day types. Homegreens · Dev diary · July 2026Sweet Maria’s movesSweet Maria’s moved to a new Shopify storefront and its scraper was rewritten. Research · Dev diary · July 13–27Fusion, and learning from live sessionsThe reasoning and conversational harnesses were joined so that a conversation’s claims become a “doxastic web” that the deliberation engine settles. Research · Dev diary · July 6–14The conversational harnessA sibling built from philosophy of language rather than epistemology. Peloton · Live · 4–25 July 2026The Tour, stage by stageOne commit per day: odds captured each morning, a preview published, yesterday settled, a reflection written. Peloton · Experiment log · 3 July 2026A bias found, a fix shelvedA backtest shows riders who finished a grand tour within 45 days are systematically underpriced. Research · Dev diary · Late June – early JulyMaking it usableMulti-provider models with per-operation model and effort choices, parallel LLM calls, a chat-to-graph intake (the “front door”) and a local web app. Research · Dev diary · June 23–24, 2026A whole harness in two daysMy first commit, Initial commit: defeasible reasoning harness, came with four design documents I’d written beforehand: an epistemic constitution (the norms), context-management principles (critics stay independent), an orchestration spec, and a build brief. Peloton · Dev diary · 9–12 June 2026The race as it unfolds, and a Cloudflare wallWithin-race state arrives: what has happened in the stages so far. Peloton · Experiment log · 4 May 2026Two good ideas that didn’t replicateA blend of the multiclass and LambdaRank heads, then a stacked meta-learner. Peloton · Experiment log · April 2026Testing a thesis, and losingThe experiment log opens with a hypothesis: combine the shape of a race with the makeup of its field. Peloton · Experiment log · 8–9 March 2026Experiments get a frameworkAn experiment harness and the “contender” model arrive: train the win and podium model only on the top 15. Peloton · Dev diary · 16–28 February 2026A Streamlit app, and 1,368 files thrown awayA pre-frontend round of model work, then a local Streamlit app for picking a race and seeing predictions. Homegreens · Dev diary · Jan – Feb 2026Building with Claude CodeFrom January 2026 the commits are co-authored with Claude. Peloton · Dev diary · 4–5 January 2026Back at itThe whole 2025 season is re-scraped in one go, about 150 races.

2025

Peloton · Dev diary · August 2025Going quietA last round of race-kind clustering and stability analysis on 9 to 11 August, then nothing for five months. Peloton · Dev diary · July 2025Embeddings, interactions, and a database too big for the assistantThe busiest month of the first season (37 commits). Homegreens · Dev diary · July 2025Analytics and sold-out coffeesThe site’s first analytics page shipped, along with prices and the ability to browse sold-out coffees. Homegreens · Dev diary · June 2025From CSVs to a real databaseThe biggest rebuild. Peloton · Dev diary · 16 May 2025The webscrape refactorThe scraper is rebuilt with logging and tests. Peloton · Dev diary · March – April 2025What kind of race was that?Most of the spring goes into characterizing races from their results alone: how shattered the field was, how clumped, how big the biggest group. Peloton · Dev diary · February 2025The first predictorsThe first models are deliberately simple: predict from a rider’s average past finishing place, then from bib numbers (teams number their leaders first), then population-wide and per-rider regressions with better evaluation metrics. Homegreens · Dev diary · Feb – Apr 2025Maintenance runsMostly scheduled data runs and seller fixes (Royal’s site changed in February). Peloton · Dev diary · 29 January 2025First commit, first scrapeThe repo starts the same week as the first big scrape of FirstCycling: about 3,200 race files from 2000 to 2024, sorted into WorldTour, ProSeries and the tier below.

2024

Homegreens · Experiment log · Oct 2024Similar coffees, and a first evaluation harnessOn 1 October the site gained “similar coffees”: a vector search over flavor and origin, shipped after a day of fighting dependency versions on Streamlit Cloud. Homegreens · Dev diary · Aug – Sep 2024The data pipeline gets its own repoOn 8 August 2024 the pipeline got its own repository, separate from the website. Homegreens · Launch · Jun – Jul 2024LaunchIn late June I built the Streamlit front end and trained the first fun-only model: a logistic regression over 7,700+ Coffee Review assessments, predicting which of seven score buckets a coffee falls into from its origin and its tasting notes. Homegreens · Dev diary · Apr – Jun 2024Making the data agree with itselfWith raw records flowing, the work became cleaning. Homegreens · Dev diary · Mar – Apr 2024A scraper for every sellerIn mid-March I wrote a small app per seller (fifteen of them dated 14–16 March), then folded them into one “full app” driven by a dictionary of per-seller functions: how to list coffee links, how to turn a URL into a name, how to trim a page to the part that describes the coffee.

2023

Homegreens · Dev diary · Dec 2023 – Mar 2024One notebook per sellerBefore writing any app I opened a Jupyter notebook for each seller and studied how its site was built: Coffee Bean Corral in December, then Hacea, Prime Green, Showroom, Mill City, Copan and Burman in early February, and a run of ten more on 19–20 February. Homegreens · Dev diary · Summer 2023Where it started: scraping Coffee ReviewThe project’s seed is a data-science course project.

2020

Quotation profiles · Dev diary · After July 2020Where it stoppedThe git history ends there. Quotation profiles · Launch · 28 June – 2 July 2020Into the cloudNext the site had to stop reading files from my laptop. Quotation profiles · Launch · 20–27 June 2020The website in a weekFlask basics on 20 June. Quotation profiles · Dev diary · 18–19 June 2020Tidying up for a websiteSix commits in one day, all housekeeping before building anything new. Quotation profiles · Method · Late May – mid-June 2020Making the search smarterThe longest notebook in the folder reads like a lab diary. Quotation profiles · Experiment log · May 2020From one file to a fieldThe oldest scripts took one paper, found its citations, and produced its distribution over the text. Quotation profiles · Dev diary · 13 April 2020A machine-readable TreatiseI made the three files the rest of the project stands on: the full Treatise text with every paragraph numbered, and a pair of concordance tables between Selby-Bigge page numbers and Norton paragraph numbers in each direction.

2019

Quotation profiles · Dev diary · Oct 2019 – Feb 2020Building the pileThe first files in the folder are PDFs.