Introduction


Contents of SAS/ETS Software

Procedures

SAS/ETS software includes the following SAS procedures:

ARIMA

ARIMA (Box-Jenkins) and ARIMAX (Box-Tiao) modeling and forecasting

AUTOREG

regression analysis with autocorrelated or heteroscedastic errors and ARCH and GARCH modeling

COMPUTAB

spreadsheet calculations and financial report generation

COPULA

fitting and simulating multivariate distributions by using copula methods

COUNTREG

regression modeling for dependent variables that represent counts

DATASOURCE

access to financial and economic databases

ENTROPY

maximum entropy-based regression

ESM

forecasting by using exponential smoothing models with optimized smoothing weights

EXPAND

time series interpolation, frequency conversion, and transformation of time series

FORECAST

automatic forecasting (deprecated procedure)

LOAN

loan analysis and comparison

MDC

multinomial discrete choice analysis

MODEL

nonlinear simultaneous equations regression and nonlinear systems modeling and simulation

PANEL

panel data models

PDLREG

polynomial distributed lag regression

QLIM

qualitative and limited dependent variable analysis

SEVERITY

modeling the statistical distribution of the severity of losses and other events

SIMILARITY

similarity analysis of time series data for time series data mining

SIMLIN

linear systems simulation

SPECTRA

spectral and cross-spectral analysis

SSM

state space modeling of time series

STATESPACE

state space modeling and automated forecasting of multivariate time series

SYSLIN

linear simultaneous equations models

TIMEDATA

analyzes time-stamped transactional data with respect to time and accumulates the data into a time series format

TIMEID

identifying the time frequency for data sets that contain time series data

TIMESERIES

analysis of time-stamped transactional data

TSCSREG

time series cross-sectional regression analysis

UCM

unobserved components analysis of time series

VARMAX

vector autoregressive and moving average with modeling and forecasting

X11

seasonal adjustment (Census X-11 and X-11 ARIMA)

X12

seasonal adjustment (Census X-12 ARIMA)

Access Interfaces to Economic and Financial Databases

SAS/ETS software includes the following LIBNAME statement engines to provide access to financial and economic databases:

SASECRSP

LIBNAME engine for accessing time series and event data that reside in a CRSPAccess database

SASEFAME

LIBNAME engine for accessing time series or case series data that reside in a FAME database

SASEFRED

LIBNAME engine to retrieve economic data from the FRED website, which is hosted by the Economic Research Division of the Federal Reserve Bank of St. Louis

SASEHAVR

LIBNAME engine for accessing time series that reside in a Haver Analytics Data Link Express (DLX) database

SASEQUAN

LIBNAME engine to retrieve economic data from the Quandl website, which offers access to 8 million time series data sets from 400 sources in finance, economics, society, health, energy, demography, and more

SASEXCCM

LIBNAME engine for accessing data items that reside in the CRSP US Stock (STK) Database, the CRSP US Stock and Indices (IND) Database, the CRSP US Treasury (TRS) Database, or the CRSP/Compustat Merged (CCM) Database, which is created from data delivered via Standard & Poor’s Compustat Xpressfeed product

SASEXFSD

LIBNAME engine for accessing both FactSet data and FactSet sourced data that are provided by the FactSet OnDemand service

Macros

SAS/ETS software includes the following SAS macros:

%AR

generates statements to define autoregressive error models for the MODEL procedure

%BOXCOXAR

investigates Box-Cox transformations useful for modeling and forecasting a time series

%DFPVALUE

computes probabilities for Dickey-Fuller test statistics

%DFTEST

performs Dickey-Fuller tests for unit roots in a time series process

%LOGTEST

tests to determine whether a log transformation is appropriate for modeling and forecasting a time series

%MA

generates statements to define moving-average error models for the MODEL procedure

%PDL

generates statements to define polynomial distributed lag models for the MODEL procedure

These macros are part of the SAS AUTOCALL facility and are automatically available for use in your SAS program. Refer to SAS Macro Language: Reference for information about the SAS macro facility.

The Time Series Forecasting System

SAS/ETS software includes an interactive forecasting system, described in Part IV. This graphical user interface to SAS/ETS forecasting features was developed with SAS/AF software and uses PROC ARIMA and other internal routines to perform time series forecasting. The Time Series Forecasting System makes it easy to forecast time series and provides many features for graphical data exploration and graphical comparisons of forecasting models and forecasts. (You must have SAS/GRAPH installed to use the graphical features of the system.)

The Investment Analysis System

The Investment Analysis System , described in Part V, is an interactive environment for analyzing the time-value of money in a variety of investments. Various analyses are provided to help analyze the value of investment alternatives: time value, periodic equivalent, internal rate of return, benefit-cost ratio, and break-even analysis.