Econometrics Data Analysis with GAUSS

Main Applications of GAUSS in Econometrics

GAUSS software provides a complete set of tools for analyzing economic data. Whether you're just getting started with data collection or finalizing results, GAUSS has the econometric tools you need.

Whatever your area of research, GAUSS supports all your data analysis needs, large or small.

Field	Example applications
Macroeconomic modeling	Business cycle modeling and forecasting DSGE models Common factor analysis Exchange rate models
Healthcare economics	Panel count models Healthcare expenditure modeling Truncated and censored discrete choice models Average treatment effects
Agricultural economics	Commodity price modeling and forecasting Consumer food demand models Food transportation models Modeling agricultural production functions
Theoretical econometrics	Nonlinear unit root testing and cointegration testing Bayesian estimation and simulation Regime switching models Kalman filtering

Time Series, Regression Models and Other Main Functions of GAUSS for Econometric Analysis

GAUSS covers a comprehensive set of econometric processes and capabilities from data organization and management to advanced econometric analysis.

Data cleaning, processing, and management

• Easy data importation with support for SAS, STATA, Excel, CSV, HDF5, GAUSS matrices, GAUSS Datasets, and ASCII text files
• Data visualization
• Recoding and reclassification tools
• Data scaling methods including euclidean scaling, median scaling, maximum absolute value scaling, mid-range scaling, and standard deviation scaling
• Flexible handling of missing values including missing value imputation, pairwise deletion, and listwise deletion
• Dummy variable creation from categorical variables
• Data sorting and merging and both the file and matrix level

General Econometric Analysis

Pre-built GAUSS functions can be used to efficiently and intuitively implement fundamental econometric models including:

• Ordinary least squares
• Weighted least squares
• Generalized method of moments
• Generalized linear model
• Quantile regression
• Probit and logit models
• Maximum likelihood estimation
• Two-stage and three-stage least squares
• Seemingly unrelated regressions

Time Series Analysis

With GAUSS time series analysis is made easy and efficient whether you're just getting started or developing new cutting edge methods. GAUSS time series capabilities include:

• Time series visualization
  • Supports standard frequencies, high frequency data, and irregular frequency data
  • Fully customizable graphics
  • Easy to export, publication-quality graphs
• Comprehensive unit root tests and cointegration tests
  • Augmented Dickey-Fuller unit root tests (ADF)
  • Phillips-Perron unit root tests (PP)
  • Dickey-Fuller Generalized Least Squares (DF-GLS)
  • Kwiatkowski-Phillips-Schmidt-Shin (KPSS)
  • LM tests for unit roots
  • Quantile unit root tests
  • Im, Lee, & Tieslau unit root tests with non-normal errors
  • Flexible fourier GLS, ADF, KPSS and LM unit root tests
• Unit root tests with structural breaks
  • Zivot-Andrews unit root test with a single structural break
  • Narayan and Popp unit root test with two structural breaks
  • Lee, Strazicich, and Mark LM unit root test with one and two structural breaks
• Autoregressive moving average models (ARMA)
  • Seasonal ARMA models (SARMA and SARIMA)
  • Integrated ARMA models (ARIMA)
  • ARMA models with exogenous variables (ARMAX)
• Vector autoregressive models (VAR)
  • Seasonal VARMA models (SVARMA and SVARIMA)
  • Integrated ARMA models (VARIMA)
  • ARMA models with exogenous variables (VARMAX)
• Full suite of generalized autoregressive conditional heteroscedasticity (GARCH)
  • Integrated GARCH models (IGARCH)
  • Asymmetrical GARCH models (GJRGARCH)
  • GARCH-IN-MEAN (GARCHM)
• Vector error correction models (VECM)
• Nonlinear time series models:
  • Structural break identification and modeling
  • Markov-switching models
  • Threshold autoregressive models (TAR)
• Kalman filtering
• Parameter instability tests
  • Chow forecasting
  • CUSUM test
  • Hansen-Nyblom test
  • Rolling regressions

Discrete Choice Analysis

GAUSS provides a full suite of tools for analyzing qualitative choice models. GAUSS's discrete choice tools cover everything from binary and multinomial models to logistic regression.

• Multinomial logit models
  • Conditional logit
  • Nested logit
  • Ordered logit
  • Adjacent category logit
  • Stereotype logit
• Logistic regression modeling
  • L2 and L1 regularized classifiers
  • L2 and L1-loss linear support vector machines (SVM)
• Model selection and assessment tools
  • Full model and restricted model log-likelihoods
  • Chi-square statistics
  • Agresti’s G-squared statistic
  • McFadden’s pseudo-R-squared statistic
  • Madella’s pseudo-R-squared statistic
  • Akaike information criterion (AIC)
  • Bayesian information criterion (BIC)
  • Likelihood ratio statistics and accompanying probability values
  • Cragg and Uhler’s normed likelihood ratios
  • Count and adjusted count R-squared

Panel Data Analysis

• Data aggregation and within-group statistics
• Panel data unit root tests
  • Breitung and Das panel unit root test
  • Im, Pesaran, and Shin (IPS) panel unit root test
  • Levin-Lin-Chu (LLC) panel unit root test
  • Pesaran unit root test in the presence of cross-section dependence
  • Modified CADF and CIPS panel unit root tests
  • Bai and Ng PANIC panel unit root test
  • Harris and Tzavalis panel unit root test
  • Hadri panel data unit root tests
  • Panel unit root tests with structural breaks
  • Im, Lee, & Tieslau panel LM unit root test with level shifts
  • Lee and Tieslau panel LM unit root test with level and trend shifts
  • Nazlioglu & Karul panel stationarity test with gradual structural shifts
• One-way individual effects
  • One-way fixed effects
  • One-way random effects
  • Least squares pooled ols
  • Least squares dummy variable (LSDV)
• Cross dependence tests
  • Pesaran test for cross-dependence
  • Friedman test for cross-dependence
  • Frees test for cross-dependence
• Causality tests
  • Granger causality
  • Toda & Yamamoto causality test
  • Single Fourier-frequency Granger causality test
  • Single Fourier-frequency Toda & Yamamoto causality test
  • Cumulative Fourier-frequency Granger causality test
  • Cumulate Fourier-frequency Today & Yamamoto test
  • Fischer testing for Granger causality in heterogeneous mixed panels
  • Zhnc and Zn test statistics for Granger non-causality in heterogeneous panels
  • Panel SUR Wald statistics
• Model diagnostics and assessment tests
  • Hausman test for specification
  • Lagrange multiplier test for error components model

GAUSS Applications Designed for Econometrics

Application	Description
Time series MT	Includes comprehensive tools for time series data analysis including MLE and state-space estimation Unit root and cointegration testing Model diagnostics and forecasting Nonlinear time series models
Linear regression MT	Provides procedures for estimating single equations or systems of equations including: Two-stage least squares. Three-stage least squares. Seemingly unrelated regression.
Discrete Choice	Provides an adaptable, efficient, and user-friendly environment for linear data classification including Binary and count models. Multinomial logit models. Logistic regression. Tools for model selection and assessment.
Fanpac MT	Provides econometric tools commonly implemented for estimation and analysis of financial data: Allows users to tailor each session to their specific modeling needs. Includes tools for modeling univariate and multivariate Generalized Autoregressive Conditionally Heteroskedastic (GARCH) models.
Bayesian Estimation Tools	Provides a suite of pre-built tools for Bayesian estimation and analysis including: Data generation. Markov-chain Monte Carlo estimation (MCMC). Full post-estimation graphing and reporting. Maximum likelihood estimation (MLE) initialization.
Maximum Likelihood MT	Provides a suite of flexible, efficient and trusted tools for the solution of the maximum likelihood problem with bounds on the parameters. Includes: Variety of descent and line search algorithms. Analytical and numerical derivatives. Dynamic algorithm switching. Multiple tools for statistical inference.
Constrained Maximum Likelihood MT	Provides a suite of flexible, efficient and trusted tools for the solution of the maximum likelihood problem with general constraints on the parameters. Features include: Linear and nonlinear equality and inequality constraints. Trust region method. A variety of descent and line search algorithms. Analytical and numerical derivatives. Dynamic algorithm switching. Multiple methods for statistical inference.
Optimization MT	Optimization MT provides tools for efficient optimization including: Select descent algorithms. Step-length methods. Algorithm switching.
Constrained Optimization MT	Solves the nonlinear programming problem, subject to general constraints on the parameters. Includes: Linear or nonlinear constraints. Equality or inequality constraints. Uses sequential quadratic programming method in combination with several descent methods. Trust region method.
Descriptive Statistics MT	Provides basic statistics for the variables in GAUSS datasets. These statistics describe and test univariate and multivariate features of the data and provide information for further analysis.
Algorithmic Derivatives	Provides tools for computing algorithmic derivatives. Works independently of other applications. Can be used with any application that needs derivatives. The use of algorithmic derivatives can improve accuracy and convergence speeds.

Industries that use GAUSS Data Analysis Tools

Econometricians across a wide range of industries use GAUSS. GAUSS is found in

• Universities
• Government agencies
• Non-governmental organizations
• Nonprofit research organizations
• Corporations

Whether performing macroeconomic simulations, transportation modeling, recession dating, hedge fund management, or teaching econometrics, GAUSS offers the tools you need to succeed.

Benefits of GAUSS for Econometricians

GAUSS provides a fast and flexible environment for econometric analysis. Whether you are performing ordinary least squares regressions or developing cutting-edge algorithms, GAUSS provides tangible advantages including:

• Over 1000 pre-built statistical and econometric functions.
• Light-weight and efficient analytics engine designed to make the most of your hardware and provide optimized computation speed.
• Intuitive matrix-based programming language for transparent and easy to understand programming.
• Fully interactive environment for speeding up your workflow from exploring data to analyzing results.
• Comprehensive documentation and examples.
• Comprehensive data support including CSV, Excel HDF5, SAS, Stata, text delimited files.
• Relational database support including MySQL, PostgreSQL, SQLite, Microsoft SQL Server, Oracle, IBM DB2, HBase, Hive and MongoDB.

Compatibility of GAUSS with Other Software

GAUSS is built to seamlessly integrate into any analytics environment:

• GAUSS is fully compatible with SAS, STATA, HDF5, CSV, and Excel datasets.
• Efficiently connect powerful analytics to any internal or customer-facing data source, application, or interface with the GAUSS Engine.
• Full technical support for assistance when migrating from and integrating with other software platforms.