{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp05_complete_proposal_portfolio20_20260803","cell_id":"negative_space_design__linguistics_semiotics","arm":"COMPLETE_PROPOSAL_PORTFOLIO","candidate_id":"nsd_ls_003_bounded_null_slot_signscape_atlas","proposal_index":3,"version":0,"title":"Bounded Null-Slot Atlas for Linguistic-Landscape Surveys","problem":"A linguistic-landscape survey can create records primarily when a researcher encounters and photographs a written sign. At a checked entrance, service point, restriction boundary, or exit where no in-scope sign is present, the survey may produce either no record or a generic null value. The resulting corpus cannot reliably distinguish an observed absence from an unvisited location, inaccessible area, capture failure, or out-of-scope site. Filling an atlas with repeated labels for these states, however, can also obscure the distribution of the signs that were found. The candidate problem is therefore an unframed absence: necessary status information is not coupled to a protected empty position that clarifies the surrounding sign pattern.","actors":["Linguistic-landscape researchers defining survey locations and sign categories","Field researchers inspecting bounded site zones","Coders validating photographs and observation statuses","Site stewards whose access and privacy rules constrain collection","Analysts interpreting the distribution of languages and sign functions"],"observable_state":"For a bounded surveyed site, the route or field notes indicate that named zones were inspected, but the corpus or atlas has no corresponding position or uses the same blank representation for observed-no-sign, not inspected, inaccessible, out of scope, and capture failure. Alternatively, every null position is filled with equally prominent explanatory text, making the placement and language of present signs difficult to perceive as a site-level pattern.","consequence":"Analysts may treat survey incompleteness as sign absence, overlook meaningful contrasts between signed and unsigned zones, or infer a placement pattern from only the positive records. A text-heavy attempt to document every null can preserve status while making the positive sign configuration perceptually illegible.","affected_objective":"Represent where in-scope public signs are present and where they were observably absent without confusing absence with missing observation or overwhelming the site-level pattern.","intervention":"Before collection, define a small site grammar of bounded observation slots relevant to the study question, such as entrance, orientation point, transaction point, restriction boundary, and exit. At each slot, the field researcher must record exactly one typed state: sign present, inspected with no in-scope sign, inaccessible, not inspected, out of scope, or capture failure. The atlas then renders each site as the same slot matrix. Present signs occupy their cells as photographs or concise records. An inspected-no-sign state becomes a protected empty cell with only a narrow boundary cue; other non-present states receive distinct edge patterns so they cannot be mistaken for observed absence. Detailed notes, contextual photographs, coding uncertainty, and access restrictions remain available on selection. Slot definitions and dimensions are fixed for the bounded study and cannot be silently filled with unrelated signs or commentary.","structural_mapping":[{"archetype_element":"Omission Candidate","domain_realization":"Remove repeated null labels, decorative map elements, and secondary metadata from the central site matrix while retaining them in recoverable detail views."},{"archetype_element":"Protected Empty Space","domain_realization":"Reserve a stable cell for every inspected-no-sign observation and prevent thumbnails, notes, or unrelated nearby signs from occupying it."},{"archetype_element":"Positive Form Relationship","domain_realization":"Make each empty cell clarify the allocation of signs across the other slots in the same site grammar."},{"archetype_element":"Attention Competition Map","domain_realization":"Identify repeated status text and contextual metadata that compete with perception of sign language, function, and placement."},{"archetype_element":"Absence Boundary","domain_realization":"Bound absence by a named observation slot, inspection event, scope rule, and cell edge rather than leaving an unexplained hole in the atlas."},{"archetype_element":"Meaning-of-Absence Check","domain_realization":"Differentiate inspected-no-sign from inaccessible, unvisited, out-of-scope, uncertain, and failed-capture states."},{"archetype_element":"Context Preservation Frame","domain_realization":"Retain site identity, slot definition, inspection time, scope criteria, contextual image, uncertainty, and access status behind each cell."},{"archetype_element":"Accessibility and Recoverability Guardrail","domain_realization":"Provide textual equivalents and a tabular export for users who cannot reliably distinguish spatial gaps or edge patterns."},{"archetype_element":"Clarity or Effect Test","domain_realization":"Test whether analysts correctly identify observation status and recover the site’s sign-allocation pattern without relying on designer interpretation."}],"mechanism_mapping":[{"mechanism_slug":"empty_state_design","role":"Diagnoses each non-present record before rendering it and assigns separate cues and recovery actions to observed absence, missing observation, access restriction, scope exclusion, and capture failure.","counterfactual_removal":"Without typed empty states, a blank cell would again conflate absence with incomplete or impossible observation."},{"mechanism_slug":"margin_and_gutter_system","role":"Creates a repeated site-slot grammar with protected cell boundaries that remain stable across sites and resist later metadata encroachment.","counterfactual_removal":"Without a reusable boundary system, empty positions could shift, collapse, or be filled differently in each site, preventing structured comparison."},{"mechanism_slug":"whitespace","role":"Uses the inspected-no-sign cell as a perceptual separation that makes the distribution and grouping of present signs legible without adding another prominent mark.","counterfactual_removal":"Replacing the cell with dense explanatory text would preserve status information but remove the negative-space relation that exposes the positive pattern."},{"mechanism_slug":"editorial_cut","role":"Moves secondary notes and repeated status wording out of the focal matrix while preserving them in the audit record and on-demand view.","counterfactual_removal":"Without recoverable cutting, the matrix remains crowded; deleting the notes outright would instead destroy provenance and necessary context."},{"mechanism_slug":"sparse_layout","role":"Keeps only the study-defined observation slots and primary sign records visible in the overview so unrelated site material does not compete with the focal distribution.","counterfactual_removal":"Without priority-based thinning, the atlas could become a general site collage in which neither present signs nor bounded absences have a stable role."}],"causal_chain":["A positive-record-only survey makes checked locations without an in-scope sign indistinguishable from locations lacking a valid observation.","A predefined site grammar creates bounded positions at which presence or absence can be observed under explicit scope rules.","Field researchers assign a typed state to every slot, supplying the context required to distinguish observed absence from missingness.","The atlas preserves inspected-no-sign records as protected empty cells and relegates secondary explanation to recoverable detail.","The empty cells form a stable figure-ground relation with present sign records across the site.","Analysts can perceive where signs cluster or stop while still checking the provenance and meaning of every apparent absence.","If the intervention works, analysts should classify slot status and describe the observed allocation without treating blankness as evidence beyond the bounded inspection."],"baseline":"Use the same sites, scope rules, and available field evidence, but collect ordinary sign-centered records and present them as a photograph list or map. Non-present states are represented by omitted records, generic nulls, or repeated textual labels according to the existing workflow. Analysts may consult field notes to resolve ambiguity.","nearest_rivals":["A completeness checklist that records whether every zone was visited but does not preserve observed absence as part of the analytical display","A table containing explicit text such as NO SIGN, NOT VISITED, or INACCESSIBLE in every cell","A geographic map showing only photographed signs and a surveyed-route overlay","A count summary reporting signs per site or zone without retaining slot-level figure-ground relationships"],"remaining_contrastive_claim":"The proposal depends on coupling exhaustive typed observation states to a protected spatial null within a repeated site grammar. Its claim is narrower than the value of complete sampling or status labels: after missingness has been distinguished, the deliberately quiet inspected-no-sign cells should make the arrangement of present signs more legible than an equally complete text-filled matrix. If explicit labels perform equivalently without added crowding, the negative-space component has no remaining advantage.","authority_safety":{"decision_authority":"The research lead may define a bounded slot grammar and authorize a pilot under existing ethics and site-access rules. Site stewards control physical access, field researchers control whether an observation can be made safely, and analysts retain responsibility for any interpretation of sign absence.","authorized_first_step":"Retrospectively prototype the atlas using one already authorized, well-documented site for which field notes can establish the status of each proposed slot; do not create unverified absence records.","excluded_actions":["Inferring institutional intent, language exclusion, or community preference from a blank slot alone","Coding an unvisited, obscured, inaccessible, or undocumented location as observed-no-sign","Collecting in restricted areas or bypassing site-steward instructions","Capturing identifiable people or sensitive contextual material beyond existing permission","Allowing the visual atlas to replace provenance, uncertainty, or textual accessibility records","Expanding the slot grammar after seeing results without recording the change"],"halt_rollback":"Halt if slot statuses cannot be established from authorized evidence, edge cues are confused with observed absence, the grammar imposes unsupported expectations about where signs should occur, or contextual records create privacy or access concerns. Roll back by disabling the atlas view and retaining the original photographs, notes, scope definitions, and status records without alteration."},"negative_tests":{"strongest_counterevidence":"With identical complete slot records, analysts using a plain text-filled matrix or checklist identify observation status and site-level sign allocation as accurately as atlas users, while the empty cells cause stronger unsupported inferences about deliberate omission or expected signage.","problem_falsifier":"The problem is falsified for the target survey if every relevant zone already has a typed, auditable observation state and analysts can reliably distinguish observed absence from missingness while perceiving the arrangement of present signs in the ordinary output.","intervention_falsifier":"The intervention is falsified if users confuse any empty or edge-coded state, cannot recover necessary context, infer intent from absence despite instructions, or gain no interpretive clarity over an equally complete explicit-label rival.","risks":["Predefined slots may impose a site grammar that does not fit the physical or communicative environment.","A protected blank may suggest that a sign ought to exist at that location.","Observed absence at one inspection time may be mistaken for a durable site property.","Sparse display may hide uncertainty or contextual variation until requested.","Edge patterns and spatial relationships may be inaccessible without equivalent text and keyboard navigation.","Researchers may overinterpret omission as purposeful rather than treating it as a bounded observation.","Retrospective field notes may be insufficient to validate negative observations."]},"next_evidence_step":"Using one previously authorized site with adequate route notes, define no more than six observation slots before inspecting the sign records. Have two coders independently assign each slot a typed state and mark any state that cannot be established. Exclude unresolved slots rather than converting them to absence. Build three read-only views from the same validated records: the ordinary sign-centered baseline, a complete text-filled matrix, and the bounded null-slot atlas. Ask 6 eligible analysts, in counterbalanced order, to classify slot states, describe the observable sign allocation, cite supporting records, and identify what cannot be inferred. Record classification errors, provenance-recovery failures, unsupported intent claims, and qualitative interpretations. Use the exercise only to reject the slot grammar, revise the cues, or justify a prospective bounded pilot.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"Proposal 1 addresses crowding around response-timing evidence inside conversation transcripts and uses a silence-lane renderer to improve retrospective sequence analysis. Proposal 2 addresses fieldworker prompt intrusion during live language elicitation and uses a protected conversational response interval to preserve the provenance of consultant productions. This proposal addresses the loss or overfilling of observed absence in spatial inventories of public signs. It changes the survey’s observation model and site-level atlas so bounded unsigned locations remain typed, protected elements of a figure-ground pattern. Its causal path runs from exhaustive slot-state capture through spatially framed absence to interpretation of sign allocation; it neither alters conversational transcripts nor regulates interviewer turns. It can be adopted independently of both earlier interventions, and neither earlier proposal supplies its site grammar, negative-observation record, or signscape atlas.","revision_record":{"parent_version":null,"progress_targets_addressed":[],"conceptual_changes":[],"operational_changes":[],"evidence_changes":[],"claim_changes":[]}}