https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4/Head https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4 http://www.nanopub.org/nschema#hasAssertion https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4/assertion https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4 http://www.nanopub.org/nschema#hasProvenance https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4/provenance https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4 http://www.nanopub.org/nschema#hasPublicationInfo https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4/pubinfo https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4 http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://www.nanopub.org/nschema#Nanopublication https://w3id.org/np/RAjiEqmoHsEln4az9dNosKmM4iuXl2hEdbLAzapoyFdl4/assertion https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test http://purl.org/dc/terms/description analysis.py iterates reverse-and-add from 512 for 1000 steps and tracks runs of 1-bits of length 1..32 with an 8-bit pad. It tests run-length signatures on the last 400 steps for a period of 1..24 at agreement 0.85, and applies the same repetition test to 400 steps of doubling from 512. Chain counts are in derived/measured.json. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test http://www.w3.org/1999/02/22-rdf-syntax-ns#type https://w3id.org/delphi/ontology/Assessment https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test http://www.w3.org/2000/01/rdf-schema#comment Measured: 408 tracked chains of localized runs lasting at least 20 steps (n = 1000, count of greedy chains, not a census of visually distinct particles). Interpretation: The page states a thousand steps from 512. 'Localized structures' are persistent short runs of 1-bits in the binary picture, aligned at the least significant bit. 'No simple repetitive form' is the absence of a short period in the sequence of run lengths, not in the integers themselves (those strictly increase). The doubling map is the repetitive control: a single moving 1. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test http://www.w3.org/2000/01/rdf-schema#label Claim test of wolfram2002-ch04-07: supports, confidence 0.7 https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test http://www.w3.org/2000/01/rdf-schema#seeAlso https://github.com/fractastical/delphisci/blob/bf2af6ee0a84e23ffa6414ad7a0a50a8c276506e/test-data/claim-tests/wolfram-nks/wolfram2002-ch04-07/result.json https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test http://www.w3.org/ns/prov#wasAttributedTo https://w3id.org/delphi/resource/agent/delphisci-claim-tester-grok-4-7 https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/admissibleDatasets The orbit is generated by the locked reverse-and-add rule from 512 for 1000 steps. No external trajectory is loaded. This is not evidence about organisms. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/assessmentType claim-test/0.1.0 https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/dataKind computational https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/disconfirmingObservation Fewer than three persistent runs and a short-period signature, with the doubling control correctly flagged as repetitive. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/evidenceAgainst A match shows only that this computation behaves as claimed. It says nothing about organisms. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/evidenceAgainst Finite check: 1000 steps, final bit length 627, under the cap of 20000. A later period longer than 24 is not ruled out. The best short-period agreement on the last 400 signatures was 0.0. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/evidenceAgainst Runs longer than 32 bits are ignored by the tracker, and a structure that jumps more than 8 bits in one step is dropped. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/evidenceAgainst The count 408 is the number of greedy chains under an 8-bit pad, and the longest chain is 80 steps (18 chains last at least 50; none last 100). One visual structure can be split or re-linked, so 408 is not a particle census. The pre-registered bar was at least 3. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/expectedObservation At least three tracked runs last >= 20 steps, no period 1..24 reaches agreement 0.85 on the last 400 signatures, and the doubling control does reach that agreement. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/failCriterion Pre-registered. If the run finishes and the doubling control is repetitive, fewer than 3 persistent structures together with a simply repetitive signature refutes the claim on this bound. One of those two features without the other is mixed. Hitting the bit cap, finishing fewer than 1000 steps, or a control that is not flagged repetitive makes the verdict inconclusive. The check does not say the pattern never repeats at a longer period, and it says nothing about organisms. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/hasConfidence 0.7 https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/hasEvidence https://w3id.org/delphi/resource/evidence/wolfram2002-ch04-07--claim-test--dataset-1 https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/hasVerdict supports https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/hypothesis Base-2 reverse-and-add started at 512, run for 1000 steps, produces at least three localized structures and its run-length signature is not simply periodic, while the same tracker calls the doubling map repetitive. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/inferenceMethod Greedy nearest-start tracking of runs of length 1..32 with an 8-bit pad, plus the maximum period-agreement of run-length signatures. Thresholds are the constants in analysis.py. https://w3id.org/delphi/resource/assessment/wolfram2002-ch04-07--claim-test https://w3id.org/delphi/ontology/passCriterion Pre-registered. Rule: n -> n + int(bin(n)[2:][::-1], 2), dropping what would be leading zeros, start 512, 1000 iterations, stop if the bit length exceeds 20000. A localized run is a contiguous block of 1-bits of length 1..32, positions measured from the least significant bit. A run continues a chain if its interval lies within 8 bits of the previous run; chains are matched greedily by closest start. A structure is persistent if its chain lasts at least 20 steps. The pattern is simply repetitive if, on the last 400 run-length signatures, some period p in 1..24 agrees on at least 0.85 of the comparable steps. Supports if at least 3 persistent structures are found, the reverse-and-add signature is not simply repetitive, the run finishes all 1000 steps under the bit cap, and the control n -> 2n from 512 for 400 steps is simply repetitive. 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