PTR can refer to: Pilibhit Tiger Reserve, in India Particle transfer roller, for cleaning motion picture film Peak-to-trough ratio, a parameter in pharmacokinetics Petir LRT station (LRT station abbreviation), Singapore PetroChina (NYSE: PTR) Photothermal Ratio, light/temperature ratio for a plant Physical transmission right in the electricity market Physikalisch-Technische Reichsanstalt, later Physikalisch-Technische Bundesanstalt, a German research institute Pitrilysin, an enzyme Planar ternary ring in algebra Pool Test Reactor, Canada Proton-transfer-reaction mass spectrometry, used in chemical analysis PTR rifle, made by PTR Industries, Inc., US A type of DNS record in computer networking Pointer in computer programming (e.g. the PTR keyword in x86 assembly language) Palanivel Thiagarajan, an Indian politician Puerto Rico, ITU country code Public Test Realm, a server in Overwatch where updates are tested by developers for player feedback PaRappa the Rapper
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).