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Question 561: The Observed Likelihood Uses Every Qualified Parameter Law

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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P1000-0561 · q-20261015-advance-20261116-r04-finite-maximum-likelihood-estimator-0011

Original question and givens

Use complete theta labels=[a10, b10], observations=[x10, y10] and aligned exact probability rows=[[[3, 4], [1, 4]], [[1, 4], [3, 4]]]. Each theta row is nonnegative and sums to1. Sort labels with their associated rows/columns, never independently. Observed label=x10. Give (theta_values, observations, probability_rows, observed, likelihood_rows, certificate).

  • G001 — Use complete theta labels=[a10, b10], observations=[x10, y10] and aligned exact probability rows=[[[3, 4], [1, 4]], [[1, 4], [3, 4]]]. Each theta row is nonnegative and sums to1. Sort labels with their associated rows/columns, never independently. Observed label=x10. Give (theta_values, observations, probability_rows, observed, likelihood_rows, certificate).

Definition and scope

Each parameter law is normalized. Fix the observation and compare its column; likelihood is not a posterior.

Step-by-step derivation

S001 · implies

Before

Θ=[a10, b10]; Ω=[x10, y10]

After

[[3/4, 1/4], [1/4, 3/4]]

Conditions: none

Each row is one parameter law and each column an outcome; reorder probabilities together with labels.

Step identifiers and dependencies

Rule: full_parametric_model · Uses: G001

S002 · calculation

Before

P_a10(Ω) := sum(3/4, 1/4)

After

P_a10(Ω) = 1

Conditions: none

Check this law's complete total mass first.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S001

S003 · calculation

Before

P_b10(Ω) := sum(1/4, 3/4)

After

P_b10(Ω) = 1

Conditions: none

Check this law's complete total mass first.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S002

S004 · implies

Before

parameter=a10; observed=x10

After

L(a10;x10)=3/4

Conditions: none

Fix the observation and compare its column across parameters, without introducing a prior.

Step identifiers and dependencies

Rule: fixed_likelihood_lookup · Uses: G001, S003

S005 · implies

Before

parameter=b10; observed=x10

After

L(b10;x10)=1/4

Conditions: none

Fix the observation and compare its column across parameters, without introducing a prior.

Step identifiers and dependencies

Rule: fixed_likelihood_lookup · Uses: G001, S004

S006 · implies

Before

[[a10, 3/4], [b10, 1/4]]

After

maximum=3/4; all argmax=[a10]

Conditions: none

Retain every maximizer; for an all-zero column the complete argmax is still all parameters.

Step identifiers and dependencies

Rule: complete_argmax · Uses: G001, S005

S007 · implies

Before

likelihood indexed by fixed observed outcome

After

not a posterior probability over parameters

Conditions: none

Likelihoods across parameters need not sum to1; the original laws are the normalized rows.

Step identifiers and dependencies

Rule: likelihood_scope · Uses: G001, S006

Reverse checks

  • S007 · premise_and_result_audit — Retain every parameter and sample label; distinguish null, empty tables, zero distributions and tied optima.
  • S006 · premise_and_result_audit — Retain every parameter and sample label; distinguish null, empty tables, zero distributions and tied optima.
  • S005 · premise_and_result_audit — Retain every parameter and sample label; distinguish null, empty tables, zero distributions and tied optima.
  • S004 · premise_and_result_audit — Retain every parameter and sample label; distinguish null, empty tables, zero distributions and tied optima.
  • S003 · premise_and_result_audit — Recompute P_b10(Ω) with exact rational arithmetic, not rounded decimals.
  • S002 · premise_and_result_audit — Recompute P_a10(Ω) with exact rational arithmetic, not rounded decimals.
  • S001 · premise_and_result_audit — Retain every parameter and sample label; distinguish null, empty tables, zero distributions and tied optima.

Result

([a10, b10], [x10, y10], [[3/4, 1/4], [1/4, 3/4]], x10, [[a10, 3/4], [b10, 1/4]], complete_normalized_finite_model_likelihood_table)

The full substitutions and premise audits recover the original answer, retaining its field order and verdict meanings.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: c3a7e26bd805333fca2b745d7f5a8f761db1260c7da3b73325d289ebb023e0bf
  • candidate record SHA-256: c40f742aa204fe398c53d7071d4540d4ecfa1c7740a8cde082aebdfbcd0239de
  • semantic review receipt SHA-256: 6c2c6d46aded7582a11ac41a8c0b3bdde2669a53bdb6e796eea2039994a02772
  • question-first witness SHA-256: 77e43898df9efdbf8094ad81fe4ab91cf4b4bd82f481eb9b4699b73cb4da612b
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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