https://w3id.org/np/RAn_co3g4xT6dD0-1wZIna0LPHZoTITh50ruLnYOyvLyo
.trig | .trig.txt | .jelly | .jelly.txt | .jsonld | .jsonld.txt | .nq | .nq.txt | .xml | .xml.txt
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sub:assertion {
<https://w3id.org/delphi/resource/assessment/wolfram2002-ch11-21--claim-test> a <https://w3id.org/delphi/ontology/Assessment>;
dc:description "analysis.py evolves rule 54 for 256 steps from every initial condition n = 1..65535 (binary digits of n on white; batches of 512 vectorised in numpy on a lattice wide enough that the light cone never reaches the edge), encodes every 6 x 6 space-time tile with top-left in rows 128..250 inside the light cone as a 36-bit integer and counts distinct tiles D; patterns with D <= 400 are also tested for exact temporal periodicity (period <= 16) of the light-cone core over steps 128..256. The 20 initial conditions with the largest D are re-run for 512 steps. Per-initial-condition values in derived/census.csv.xz; runtime about 3 minutes.";
<http://www.w3.org/2000/01/rdf-schema#comment> "Measured: 0 number of initial conditions n <= 65536 whose rule-54 pattern has more than 1050 distinct 6x6 tiles in steps 128-256 (n = 65535, exhaustive over n = 1..65535 (n = 65536 has 17 bits and was not included)). Interpretation: The claim is a finite observational statement about the first 10^8 initial conditions; the full census is beyond a few minutes of Python, so this is a scaled census (2^16 initial conditions) with the book's informal judgement 'nothing fundamentally more complicated than repetitive or nested' frozen into a local-complexity classifier. The classifier counts distinct 6 x 6 space-time tiles in the second half of the evolution: self-similar (nested) and periodic patterns have bounded tile vocabularies, whereas class 3 patterns have thousands and class 4 patterns with interacting gliders over a thousand. The threshold was set from controls outside the rule-54 family plus the book's own eight rule-54 examples; it is admittedly coarse, and the random-seed rule 150 controls (nested, up to 1007) show that nested patterns with wide seeds approach it. A failure under this classifier would therefore need the T = 512 confirmation and visual inspection before being read as a counterexample to Wolfram's census.";
<http://www.w3.org/2000/01/rdf-schema#label> "Claim test of wolfram2002-ch11-21: supports, confidence 0.6";
<http://www.w3.org/2000/01/rdf-schema#seeAlso> <https://github.com/fractastical/delphisci/blob/bf2af6ee0a84e23ffa6414ad7a0a50a8c276506e/test-data/claim-tests/wolfram-nks/wolfram2002-ch11-21/result.json>;
prov:wasAttributedTo <https://w3id.org/delphi/resource/agent/delphisci-claim-tester-claude-fable-5-1>;
<https://w3id.org/delphi/ontology/admissibleDatasets> "Planned datasets: rule54-initial-condition-census";
<https://w3id.org/delphi/ontology/assessmentType> "claim-test/0.1.0";
<https://w3id.org/delphi/ontology/dataKind> "computational";
<https://w3id.org/delphi/ontology/disconfirmingObservation> "Pre-registered. The claim FAILS if at least one initial condition n <= 65536 has D > 1050 and the T = 512 re-run also gives D > 1050 (sustained local complexity comparable to the class 3/4 controls). If some exceed 1050 at T = 256 but not at T = 512 the verdict is 'mixed' (transient complexity). The census is 1/1526 of the book's 10^8 initial conditions; a pass is consistent with the claim but far from exhausting it.";
<https://w3id.org/delphi/ontology/evidenceAgainst> "'Repetitive or nested' was frozen into a local-complexity classifier (distinct 6 x 6 space-time tiles) with a threshold set from controls outside the family (rule 90/150/22/18 nested, rules 250/108/184/62/41 repetitive, rules 110/30/45 complex) and the book's own eight rule-54 examples. The margin is large (426 observed vs. 1094 for the least complex rule-110 control) but the classifier is coarse: a class-4-like pattern with a small glider repertoire could in principle have a modest tile vocabulary, and nested patterns from wide seeds (rule 150 random 14-bit seeds reach 1007) approach the threshold.",
"Finite horizon (256 steps, re-checks to 512): slowly developing complexity, e.g. structures appearing only after thousands of steps, would be missed.",
"Pre-registered decision: 0 of 65,535 initial conditions exceeds the 1050-tile threshold (0 exceed even the stricter 700). The largest vocabulary is 426 tiles (n = 52843) and the twenty largest all fall back to 391 tiles at steps 256-512, the same vocabulary as the book's examples n = 787 and 803; the distribution is strongly clustered (median 68; 50,561 below 100; 214 between 400 and 500), consistent with a small repertoire of repetitive and nested forms. 17.2% of the patterns are exactly periodic in the core with period 4 over steps 128-256.",
"This is a scaled census: 2^16 initial conditions rather than the 10^8 of the book, i.e. seeds of at most 16 cells, so wider seeds (where interacting structures are more likely) are untested; a pass here is consistent with Wolfram's census but does not reproduce it.";
<https://w3id.org/delphi/ontology/expectedObservation> "Pre-registered. Family: initial conditions n = 1..65536 (16 bits), cell values = binary digits of n placed on an infinite white background (validated against the figure: n = 1 single cell, n = 3 two cells, n = 291 nested); rule 54 run for T = 256 steps on a lattice wide enough that the light cone never reaches the edge. Classifier (frozen before the census): the number D of distinct 6 x 6 space-time tiles whose top-left corner lies in rows 128..250 and inside the light cone (plus 2 cells) of the pattern. Calibration on controls outside the family, disclosed: repetitive and nested rules give D <= 1007 (rule 90 single cell 115, random 14-bit seeds 267-395; rule 150 single 316, random seeds 804-1007; rule 22 single 119; rule 18 random 309-602; rules 250, 108, 184, 62, 41 random 1-178), while class 3/4 controls give D >= 1094 (rule 110 random 14- and 30-bit seeds 1094-1553; rule 30 6801-7166; rule 45 6338-6401), with a few class-3 rules from narrow seeds in between (rule 106: 462 and 2912; rule 126: 130-402; rule 146: 371-413; rule 73: 64-774). The eight rule-54 patterns shown in the book's figure (n = 1, 3, 75, 259, 291, 787, 803, 56549) give D = 10, 37, 315, 315, 286, 391, 391, 370, and a batch of 256 random 14-bit seeds gave max 391. Threshold: D > 1050 (geometric midpoint of 1007 and 1094) = 'more complicated'. Also recorded per initial condition: exact temporal periodicity (period <= 16) of the pattern's core over steps 128..256 ('repetitive'). The claim PASSES if 0 of the 65536 initial conditions has D > 1050. Reported, not decisive: the distribution of D, the fraction that is exactly periodic, the number with D > 700 (a stricter threshold that still clears all rule-54 book examples), and for any initial condition above threshold a re-run with T = 512.";
<https://w3id.org/delphi/ontology/failCriterion> "Pre-registered. The claim FAILS if at least one initial condition n <= 65536 has D > 1050 and the T = 512 re-run also gives D > 1050 (sustained local complexity comparable to the class 3/4 controls). If some exceed 1050 at T = 256 but not at T = 512 the verdict is 'mixed' (transient complexity). The census is 1/1526 of the book's 10^8 initial conditions; a pass is consistent with the claim but far from exhausting it.";
<https://w3id.org/delphi/ontology/hasConfidence> "0.6"^^xsd:double;
<https://w3id.org/delphi/ontology/hasEvidence> <https://w3id.org/delphi/resource/evidence/wolfram2002-ch11-21--claim-test--dataset-1>;
<https://w3id.org/delphi/ontology/hasVerdict> "supports";
<https://w3id.org/delphi/ontology/hypothesis> "Rule 54, run from each of the first N initial conditions (binary digits of n on a white background, as in NKS p. 697), produces only repetitive or nested patterns: none has the local space-time complexity characteristic of class 3 or class 4 behaviour.";
<https://w3id.org/delphi/ontology/inferenceMethod> "analysis.py evolves rule 54 for 256 steps from every initial condition n = 1..65535 (binary digits of n on white; batches of 512 vectorised in numpy on a lattice wide enough that the light cone never reaches the edge), encodes every 6 x 6 space-time tile with top-left in rows 128..250 inside the light cone as a 36-bit integer and counts distinct tiles D; patterns with D <= 400 are also tested for exact temporal periodicity (period <= 16) of the light-cone core over steps 128..256. The 20 initial conditions with the largest D are re-run for 512 steps. Per-initial-condition values in derived/census.csv.xz; runtime about 3 minutes.";
<https://w3id.org/delphi/ontology/passCriterion> "Pre-registered. Family: initial conditions n = 1..65536 (16 bits), cell values = binary digits of n placed on an infinite white background (validated against the figure: n = 1 single cell, n = 3 two cells, n = 291 nested); rule 54 run for T = 256 steps on a lattice wide enough that the light cone never reaches the edge. Classifier (frozen before the census): the number D of distinct 6 x 6 space-time tiles whose top-left corner lies in rows 128..250 and inside the light cone (plus 2 cells) of the pattern. Calibration on controls outside the family, disclosed: repetitive and nested rules give D <= 1007 (rule 90 single cell 115, random 14-bit seeds 267-395; rule 150 single 316, random seeds 804-1007; rule 22 single 119; rule 18 random 309-602; rules 250, 108, 184, 62, 41 random 1-178), while class 3/4 controls give D >= 1094 (rule 110 random 14- and 30-bit seeds 1094-1553; rule 30 6801-7166; rule 45 6338-6401), with a few class-3 rules from narrow seeds in between (rule 106: 462 and 2912; rule 126: 130-402; rule 146: 371-413; rule 73: 64-774). The eight rule-54 patterns shown in the book's figure (n = 1, 3, 75, 259, 291, 787, 803, 56549) give D = 10, 37, 315, 315, 286, 391, 391, 370, and a batch of 256 random 14-bit seeds gave max 391. Threshold: D > 1050 (geometric midpoint of 1007 and 1094) = 'more complicated'. Also recorded per initial condition: exact temporal periodicity (period <= 16) of the pattern's core over steps 128..256 ('repetitive'). The claim PASSES if 0 of the 65536 initial conditions has D > 1050. Reported, not decisive: the distribution of D, the fraction that is exactly periodic, the number with D > 700 (a stricter threshold that still clears all rule-54 book examples), and for any initial condition above threshold a re-run with T = 512.";
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<http://www.w3.org/2000/01/rdf-schema#label> "Dataset: Rule 54 from initial conditions 1..65536 (generated by analysis.py)";
prov:wasDerivedFrom <https://www.wolframscience.com/nks/p697--the-threshold-of-universality-in-cellular-automata/> .
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