Concept-Basin Archaeology (CBA): A Logprob-Only Instrument for Inferring Pre-Output Geometry Under Shock, Null Families, and Fork Discipline
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| Natura: | Recurso digital |
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Zenodo
2026
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| _version_ | 1866901598490329088 |
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| author | Esposito, Giovanni |
| author_facet | Esposito, Giovanni |
| contents | <p>This release introduces Concept-Basin Archaeology (CBA): an instrument-first, logprob-only protocol for inferring instrument-relative geometric structure in a model’s pre-output response landscape without access to weights or activations. CBA constructs a dense shadow field from forced-choice logprob probes executed under predeclared prompt families, null families (taxonomy vs synonym vs random controls), and shock schedules (coordination pressure / constraint tightening). From this shadow field, CBA estimates geometry invariants—basin depth, directional stiffness, capture radius, and anisotropy—and includes explicit two-gate validation (Measurement Gate + Inference Gate), fork-manifest disclosure to prevent post-hoc selection, operational falsifiers, and Route-Blocker negative certificates for any missing witness or failed control.</p> <p>This release is scope-disciplined: it certifies the instrument and admissibility architecture (σ-stage) and forbids numerical claims absent hashed artifacts and issued certificates. Optional auxiliary channels (embedding/similarity) are separated into an appendix and are non-mandatory unless executed.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_18814635 |
| institution | Zenodo |
| language | |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Concept-Basin Archaeology (CBA): A Logprob-Only Instrument for Inferring Pre-Output Geometry Under Shock, Null Families, and Fork Discipline Esposito, Giovanni geometry as compression • representation geometry • logprob probing • forced-choice evaluation • shadow field • anisotropy • hubness (auxiliary channel) • calibration (isotonic regression) • shock schedule • null models • falsifiability • auditability • protocol / instrument • interpretability • information theory <p>This release introduces Concept-Basin Archaeology (CBA): an instrument-first, logprob-only protocol for inferring instrument-relative geometric structure in a model’s pre-output response landscape without access to weights or activations. CBA constructs a dense shadow field from forced-choice logprob probes executed under predeclared prompt families, null families (taxonomy vs synonym vs random controls), and shock schedules (coordination pressure / constraint tightening). From this shadow field, CBA estimates geometry invariants—basin depth, directional stiffness, capture radius, and anisotropy—and includes explicit two-gate validation (Measurement Gate + Inference Gate), fork-manifest disclosure to prevent post-hoc selection, operational falsifiers, and Route-Blocker negative certificates for any missing witness or failed control.</p> <p>This release is scope-disciplined: it certifies the instrument and admissibility architecture (σ-stage) and forbids numerical claims absent hashed artifacts and issued certificates. Optional auxiliary channels (embedding/similarity) are separated into an appendix and are non-mandatory unless executed.</p> |
| title | Concept-Basin Archaeology (CBA): A Logprob-Only Instrument for Inferring Pre-Output Geometry Under Shock, Null Families, and Fork Discipline |
| topic | geometry as compression • representation geometry • logprob probing • forced-choice evaluation • shadow field • anisotropy • hubness (auxiliary channel) • calibration (isotonic regression) • shock schedule • null models • falsifiability • auditability • protocol / instrument • interpretability • information theory |
| url | https://doi.org/10.5281/zenodo.18814635 |