There are multiple definitions:

1. neural network(English)

   • ANN, DNN, FNN, MFNN
   • Artificial intelligence, Neural network

2. nearest neighbor(English)

   • ML
   • Machine learning

3. normal nutrition(English)

   • MNHD, NN
   • Nutrition, Metabolism, Pregnancy
   • https://doi.org…1440-1681.12147

4. normal-to-normal [interval](English)

   • HRV indices identify HCC patients at high risk of death and suggests that such monitoring might guide the need for early therapy in these types of patients)
   • ECG, HCC, HFimpEF, HRV, OS, SNS, TRi
   • Liver disease, Oncology, Prognosis, Cardiology, Variability / oscillation, Monitoring, Electrophysiology
   • https://doi.org…nostics11050890
   • https://doi.org…JAHA.120.016075

5. nonsarcopenia/nonvisceral [obesity](English)

   • ASM, BIA, BMI, NAFLD, NV, SMI, SN, SV, T2DM, VFA
   • Adiposity, Diabetes
   • https://doi.org…55/2022/2229139