Special report on the City of Norwalk for the period July 1, 2006 through April 9, 2008

Special report on the City of Norwalk for the period July 1, 2006 through April 9, 2008

Special report on the Woodbury County Sheriff’s Office for the period December 1, 2004 through December 31, 2007

Special report on the Woodbury County Sheriff’s Office for the period December 1, 2004 through December 31, 2007

Biplots of fuzzy coded data

A biplot, which is the multivariate generalization of the two-variable scatterplot, can be used to visualize the results of many multivariate techniques, especially those that are based on the singular value decomposition. We consider data sets consisting of continuous-scale measurements, their fuzzy coding and the biplots that visualize them, using a fuzzy version of multiple correspondence analysis. Of special interest is the way quality of fit of the biplot is measured, since it is well-known that regular (i.e., crisp) multiple correspondence analysis seriously under-estimates this measure. We show how the results of fuzzy multiple correspondence analysis can be defuzzified to obtain estimated values of the original data, and prove that this implies an orthogonal decomposition of variance. This permits a measure of fit to be calculated in the familiar form of a percentage of explained variance, which is directly comparable to the corresponding fit measure used in principal component analysis of the original data. The approach is motivated initially by its application to a simulated data set, showing how the fuzzy approach can lead to diagnosing nonlinear relationships, and finally it is applied to a real set of meteorological data.

Special investigation of the City of Searsboro for the period July 1, 2000 through October 9, 2006

Special investigation of the City of Searsboro for the period July 1, 2000 through October 9, 2006

Special investigation of the City of Grinnell Police Department for the period January 1, 2006 through April 30, 2008

Special investigation of the City of Grinnell Police Department for the period January 1, 2006 through April 30, 2008

Special investigation of the City of Vinton Parks and Recreation Department for the period July 19, 2001 through August 30, 2007

Special investigation of the City of Vinton Parks and Recreation Department for the period July 19, 2001 through August 30, 2007

Special investigation of selected transactions at Perry High School for the period July 1, 2005 through November 30, 2007

Special investigation of selected transactions at Perry High School for the period July 1, 2005 through November 30, 2007

Report on a special investigation of the West Marshall Community School District for the period January 1, 2001 through June 30, 2007

Report on a special investigation of the West Marshall Community School District for the period January 1, 2001 through June 30, 2007

Report on a special investigation of the City of Durant for the period July 1, 2000 through May 6, 2008

Report on a special investigation of the City of Durant for the period July 1, 2000 through May 6, 2008

Multiple filtering devices for the estimation of cyclical DSGE models

We propose a method to estimate time invariant cyclical DSGE models using the informationprovided by a variety of filters. We treat data filtered with alternative procedures as contaminated proxies of the relevant model-based quantities and estimate structural and non-structuralparameters jointly using a signal extraction approach. We employ simulated data to illustratethe properties of the procedure and compare our conclusions with those obtained when just onefilter is used. We revisit the role of money in the transmission of monetary business cycles.

Report on a special investigation of the City of Macedonia for the period June 26, 2006 through September 30, 2008

Report on a special investigation of the City of Macedonia for the period June 26, 2006 through September 30, 2008

Report on a special investigation of the City of Halbur for the period July 1, 1995 through June 30, 2008

Report on a special investigation of the City of Halbur for the period July 1, 1995 through June 30, 2008

Report on a special investigation of the Fairfield Parks and Recreation Department (Parks and Recreation) for the period January 1, 2007 through April 8, 2008

Report on a special investigation of the Fairfield Parks and Recreation Department (Parks and Recreation) for the period January 1, 2007 through April 8, 2008

Special investigation of the Cedar Rapids Veterans Memorial Commission and Valor, Inc. (Valor) for the period January 1, 2006 through October 31, 2007

Special investigation of the Cedar Rapids Veterans Memorial Commission and Valor, Inc. (Valor) for the period January 1, 2006 through October 31, 2007

Report on a special investigation of the Assistant Director of the Camp Adventure program at the University of Northern Iowa for the period January 1, 2006 through March 31, 2008

Report on a special investigation of the Assistant Director of the Camp Adventure program at the University of Northern Iowa for the period January 1, 2006 through March 31, 2008