Thème
Batched, Fused and Streaming Estimation on Apple Silicon without Sacrificing Inference
We ask whether heterogeneous high-frequency econometric workloads—realized measures, rolling and batched regressions, HAR forecasting models, GARCH-family quasi-maximum likelihood, block bootstrap inference—can be reorganised into batched, fused, streaming computation on Apple Silicon GPUs without sacrificing…
Can Intraday Financial Markets Detect Corporate Deterioration Before Accounting Disclosures?
Do one-minute financial markets see a firm's forthcoming accounting deterioration before daily markets do? This paper builds a strictly point-in-time panel of 3,796 U.S. listed firms and 102,522 firm-quarters (2013–2026) from 6.7 billion raw one-minute bars and quarterly statements with filing and release dates, and…
Evidence from 390,108 product listings of 1,569 Quebec online stores across 17 administrative regions (Fabri-Ka snapshot, 1 November 2026)
Can product-level online catalogues reveal the spatial organisation, diversity and specialization of a regional retail economy beyond what business counts show? This paper studies one read-only snapshot (1 November 2026) of Fabri-Ka, an aggregator of the public catalogues of 1,569 Quebec-based online stores (390,108…
A Pre-Registered Test of Coordination Demand, Institutional Capacity, and Instability in Historical and Modern Societies, with a Formal Framework and Agent-Based Experiments
Institutions, standards, records and administrative hierarchies can be read as devices that lower the communication cost of coordinating many people: a form of compression. This paper states that reading formally, derives what it does and does not imply, and tests its empirical corollary, that a mismatch between a…
A hypothesis-driven, reproducible study of secp256k1, ECDSA, BIP340 Schnorr and SHA-256 with machine-checked identities and controlled negative results
Bitcoin's security rests on the elliptic-curve discrete-logarithm problem on secp256k1, on SHA-256, and on the ECDSA and BIP340 Schnorr signature schemes. The generic cost of the discrete logarithm, Θ(√n), is a theorem in the generic-group model; the curve's unusual structure, a special prime, j-invariant 0 and…
A Measured Systems Study on a Heterogeneous Mac Cluster
Sparse mixture-of-experts (MoE) language models touch only a few experts per token, so a model whose weights exceed a machine's memory can still be served if the right experts are in the right place at the right time. This preliminary working paper reports the design, implementation and measurement of TITAN-MoE, an…
Design, controlled evaluation, and negative and positive evidence at the 100M-parameter scale
PRISME augments a frozen causal decoder with a read-only source bank, an ephemeral sixteen-slot latent workspace re-created at every position, a shared sparse editor that rewrites one or two slots per action, a value controller trained on counterfactual intervention gains measured by executing paired edit/no-edit…
Committees of role-specialised language-model agents that debate before answering are increasingly proposed as valuation tools. This paper asks whether the debate adds information. In a preregistered experiment on 631,866 arm's-length residential sales registered in Quebec between 2021 and 2026, evaluated under a…