§ M/Ph ãóL—dZddlZddlmZdZdZeZdZ dZ e Z dZ d „Z d „Zd „ZdS) zGrunfeld (1950) Investment DataéN)ÚutilsÚrestructuredtextzThis is public domain.aŽThis is the Grunfeld (1950) Investment Data. The source for the data was the original 11-firm data set from Grunfeld's Ph.D. thesis recreated by Kleiber and Zeileis (2008) "The Grunfeld Data at 50". The data can be found here. http://statmath.wu-wien.ac.at/~zeileis/grunfeld/ For a note on the many versions of the Grunfeld data circulating see: http://www.stanford.edu/~clint/bench/grunfeld.htm z2Grunfeld (1950) Investment Data for 11 U.S. Firms.ax:: Number of observations - 220 (20 years for 11 firms) Number of variables - 5 Variables name definitions:: invest - Gross investment in 1947 dollars value - Market value as of Dec. 31 in 1947 dollars capital - Stock of plant and equipment in 1947 dollars firm - General Motors, US Steel, General Electric, Chrysler, Atlantic Refining, IBM, Union Oil, Westinghouse, Goodyear, Diamond Match, American Steel year - 1935 - 1954 Note that raw_data has firm expanded to dummy variables, since it is a string categorical variable. có—t¦«S)á# Loads the Grunfeld data and returns a Dataset class. Returns ------- Dataset See DATASET_PROPOSAL.txt for more information. Notes ----- raw_data has the firm variable expanded to dummy variables for each firm (ie., there is no reference dummy) )Ú load_pandas©óúb/var/www/html/test/jupyter/venv/lib/python3.11/site-packages/statsmodels/datasets/grunfeld/data.pyÚloadr -s€õ ‰=Œ=Ðr cóÌ—t¦«}|j t¦«|_t j|¦«}t j|d¬¦«}||_|S)rr)Ú endog_idx) Ú _get_dataÚyearÚastypeÚfloatÚpdÚ get_dummiesÚduÚprocess_pandasÚraw_data)ÚdatarÚdss r rr=sT€õ ‰;Œ;€DØ” × Ò ¥Ñ'Ô'€D„IÝŒ~˜dÑ#Ô#€HÝ Ô ˜4¨1Ð -Ñ -Ô -€BØ€B„KØ €Ir có:—tjtd¦«}|S)Nz grunfeld.csv)rÚload_csvÚ__file__)rs r rrSs€Ý Œ;•x Ñ 0Ô 0€DØ €Kr )Ú__doc__ÚpandasrÚstatsmodels.datasetsrrÚ __docformat__Ú COPYRIGHTÚTITLEÚSOURCEÚ DESCRSHORTÚ DESCRLONGÚNOTEr rrrr r úr&sŠðØ%Ð%ØÐÐÐà,Ð,Ð,Ð,Ð,Ð,à"€ à*€ Ø€ð €ðG€ à€ ð€ð(ððð ððð,ððððr