There are multiple definitions:

1. vector quantization(English)

   • DN, ERM, GNN, GSP, ML, NN
   • Biophysics, Artificial intelligence
   • https://doi.org…OC.2021.3072172

2. valuing questionnaire(English)

   • ACT, ACT-FM, ACTKQ, ACTION, AET, AI, ASK, B&N, CTRU, DIVA, ER+, FACT-ES, GAD-7, HFRDIS, HCPC, HIV, MAF, NRES, PHQ-9, RCT, RUSAE, SERM, WSAS
   • Questionnaire
   • https://doi.org…814-022-00985-6

3. quantitative planar ventilation-perfusion(English)

   • RAHVQSQ, VQDI, VQDITL, EBV, EBV-LVR, FEV1, OSEM, SPECT
   • Pulmonology, Medical imaging, Hemodynamics
   • https://doi.org….1159/000515336