TY - BOOK ID - 11947867 TI - The Difference Between Hedonic Imputation Indexes and Time Dummy Hedonic Indexes AU - Heravi, Saeed. AU - Silver, Mick. AU - International Monetary Fund. PY - 2006 SN - 1451864418 1462360904 1451988206 9786613823304 1452725926 1283071088 PB - Washington, D.C. : International Monetary Fund, DB - UniCat KW - Electronic books. -- local. KW - Inflation (Finance). KW - Price indexes. KW - Finance KW - Business & Economics KW - Money KW - Inflation (Finance) KW - Price indices KW - Index numbers (Economics) KW - Natural rate of unemployment KW - Investments: Metals KW - Finance: General KW - Macroeconomics KW - Price Level KW - Inflation KW - Deflation KW - Metals and Metal Products KW - Cement KW - Glass KW - Ceramics KW - General Financial Markets: General (includes Measurement and Data) KW - Investment & securities KW - Consumer price indexes KW - Silver KW - Price indexes KW - Commodity markets KW - Commodity exchanges KW - United States UR - https://www.unicat.be/uniCat?func=search&query=sysid:11947867 AB - Statistical offices try to match item models when measuring inflation between two periods. For product areas with a high turnover of differentiated models, however, the use of hedonic indexes is more appropriate since they include the prices and quantities of unmatched new and old models. The two main approaches to hedonic indexes are hedonic imputation (HI) indexes and dummy time hedonic (DTH) indexes. This study provides a formal analysis of the difference between the two approaches for alternative implementations of the Törnqvist "superlative" index. It shows why the results may differ and discusses the issue of choice between these approaches. ER -