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fn_registry/python/functions/datascience/estimate_hawkes.md
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egutierrez 63a9cb5273 feat: funciones Python datascience, finance, cybersecurity y pipelines
Datascience: aggregate_by_group, deduplicate_entities/relations, detect_drift,
diff_entities/relations, extract_entities/relations_llm, hotness_score, melt,
merge_graphs, pivot, build_entity/relation_schema_prompt.
Finance: avellaneda_stoikov_quotes, generate_gbm_prices, generate_taker_order,
hawkes_intensity + módulo finance.py.
Cybersecurity: envelope_encrypt/decrypt + módulo cybersecurity.py.
Pipelines: extraction_pipeline, monte_carlo_market, run_market_sim.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-05 17:11:32 +02:00

1.2 KiB

name, kind, lang, domain, version, purity, signature, description, tags, uses_functions, uses_types, returns, returns_optional, error_type, imports, tested, tests, test_file_path, file_path
name kind lang domain version purity signature description tags uses_functions uses_types returns returns_optional error_type imports tested tests test_file_path file_path
estimate_hawkes function py datascience 1.0.0 pure def estimate_hawkes(arrivals: list[int], max_lag: int = 30) -> dict Estima parámetros de un proceso Hawkes (alpha, beta, branching_ratio) desde la autocorrelación de arrivals ajustando una exponencial decreciente sobre la ACF.
estimation
hawkes
stochastic-process
microstructure
timeseries
false
numpy
scipy
false
python/functions/datascience/datascience.py

Ejemplo

arrivals = [0, 1, 3, 2, 0, 1, 4, 2, 1, 0] * 10
result = estimate_hawkes(arrivals, max_lag=10)
# {'alpha': 0.312, 'beta': 0.874, 'branching_ratio': 0.357, 'acf': [...]}

Notas

Ajusta la función a * exp(-b * lag) sobre los lags 1..max_lag de la ACF usando curve_fit de scipy. Si el primer lag de la ACF es <= 0.01 (sin autocorrelación), retorna alpha=0, beta=1, branching_ratio=0. El branching_ratio = alpha/beta; si se acerca a 1, el proceso es explosivo. Función pura: requiere numpy y scipy instalados.