| Term | Definition / Meaning / Stand for |
| NBC |
Naive Bayes Classifier |
| NE |
Nash Equilibrium |
| NB |
Negative Binomial (Distribution) |
| NNA |
Neural Network Approximation |
| NNC |
Neural Network Classification |
| NND |
Neural Network Density Function |
| NNF |
Neural Network Function |
| NNL |
Neural Network Learning |
| NNP |
Neural Network Processing |
| NNS |
Neural Network Smoothing |
| NNT |
Neural Network Transformation |
| NCD |
Noncentral Chi-Square Distribution |
| NCF |
Noncentral F-Distribution |
| NCM |
Noncentral Moment |
| NCP |
Noncentral Parameter |
| NLA |
Nonlinear Approximation |
| NAR |
Nonlinear Autoregression |
| NARDL |
Nonlinear Autoregressive Distributed Lag Model |
| NBI |
Nonlinear Bayesian Inference |
| NCA |
Nonlinear Component Analysis |
| NLC |
Nonlinear Criterion |
| NDA |
Nonlinear Data Approximation |
| NDP |
Nonlinear Data Processing |
| NLD |
Nonlinear Density Function |
| NDE |
Nonlinear Differential Equation |
| NDS |
Nonlinear Dynamical System |
| NER |
Nonlinear Error Regression |
| NEM |
Nonlinear Estimation Model |
| NED |
Nonlinear Exponential Distribution |
| NFP |
Nonlinear Filtering Process |
| NFT |
Nonlinear Fourier Transform |
| NFD |
Nonlinear Function Decomposition |
| NLF |
Nonlinear Function |
| NGA |
Nonlinear Gradient Approximation |
| NGC |
Nonlinear Gradient Criterion |
| NGM |
Nonlinear Gradient Model |
| NGS |
Nonlinear Gradient Smoothing |
| NHC |
Nonlinear Histogram Criterion |
| NHD |
Nonlinear Histogram Distribution |
| NHF |
Nonlinear Histogram Function |
| NHM |
Nonlinear Histogram Model |
| NHR |
Nonlinear Histogram Regression |
| NHT |
Nonlinear Histogram Transformation |
| NIF |
Nonlinear Integral Function |
| NIM |
Nonlinear Integral Model |
| NIS |
Nonlinear Integral Smoothing |
| NIT |
Nonlinear Integral Transformation |
| NIE |
Nonlinear Integration Equation |
| NIP |
Nonlinear Integration Process |
| NLM |
Nonlinear Model |
| NLN |
Nonlinear Normalization |
| NLS |
Nonlinear Smoothing |
| NLT |
Nonlinear Transformation |
| NL |
Nonlinear |
| NDF |
Nonparametric Density Function |
| NC |
Normal Curve |
| N |
Normal Distribution |
| ND |
Normal Distribution |
| NID |
Normal Independent Distribution |
| NO |
Normal Order |
| NQ |
Normal Quantile |
| NF |
Normalization Function |
| NBE |
Normalized Bayesian Estimator |
| NCC |
Normalized Correlation Coefficient |
| NCE |
Normalized Cumulative Error |
| NCR |
Normalized Cumulative Residuals |
| NDC |
Normalized Data Clustering |
| NDM |
Normalized Data Model |
| NDR |
Normalized Data Regression |
| NEC |
Normalized Error Criterion |