SDR or sdr may refer to:
==Science and technology== ETSI Satellite Digital Radio, a European satellite radio standard Selective dorsal rhizotomy, a neurosurgery Short-chain dehydrogenase, a short-chain dehydrogenases/reductases family, or SDR family Single data rate, in synchronous dynamic random-access memory (SDRAM) SmartDraw, an image file format with the file extension .sdr Software-defined radio, enabling computers to tune a wide spectrum of radio frequencies, using software instead of hardware for modulation and demodulation Sony Dream Robot, later dubbed QRIO System of distinct representatives, in mathematics Sparse distributed representation, in machine intelligence Standard dimension ratio, in pipe engineering Standard-dynamic-range video, a video with a dynamic range that was standard before high-dynamic-range video SDR (audio), or super dynamic range, an audio cassette quality-control and duplication process
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).