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Browsing by Author "Werwatz, Axel"
Now showing items 1-20 of 30
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2005-10-10BuchA simple state space model of house prices Schulz, Rainer; Werwatz, Axel
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2001-08-01BuchA State Space Model For Berlin House Prices Schulz, Rainer; Werwatz, AxelHow risky are investments in residential real estate? To answer this question, information is needed about the behavior of house prices. The hedonic methodology has become a standard approach for modelling the prices of ...
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2011-06-27BuchAn Indicator for National Systems of Innovation Belitz, Heike; Clemens, Marius; Hirschhausen, Christian von; Schmidt-Ehmcke, Jens; Werwatz, Axel; Zloczysti, PetraWe develop a composite indicator measuring the performance of national innovation systems. The indicator takes into account both “hard” factors that are quantifiable (such as R&D spending, number of patents) and “soft” ...
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2005-09-30BuchAnalyzing XploRe Download Profiles with Intelligent Miner Sofyan, Hizir; Werwatz, AxelThis paper is an example of data mining in action. The database we are mining contains 1085 profiles of individuals who have downloaded the statistical software XploRe. Each profile contains the responses to an online ...
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2006-06-07BuchAsymptotic Properties of the Nonparametric Part in Partial Linear Heteroscedastic Regression Models Liang, Hua; Härdle, Wolfgang Karl; Werwatz, Axel
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2013-10-11BuchAutomated Valuation Modelling Schulz, Rainer; Wersing, Martin; Werwatz, AxelMarket value predictions for residential properties are important for investment decisions and the risk management of households, banks, and real estate developers. The increased access to market data has spurred the ...
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2020DiskussionspapierAVM and High Dimensional Data - Do Ridge, the Lasso or the Elastic Net provide an 'automated' solution? Hinrichs, Nils; Kolbe, Jens; Werwatz, AxelIn this paper, we apply Ridge Regression, the Lasso and the Elastic Net to a rich and reliable data set of condominiums sold in Berlin, Germany, between 1996 and 2013. We their predictive performance in a rolling window ...
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2005-09-09BuchBeyond "Manucentrism" Bingley, Paul; Eriksson, Tor; Werwatz, Axel; Westergård-Nielsen, NielsThis paper gives a comprehensive picture of job and worker flows for the entire Danish economy. We exploit a unique central administrative register encompassing all employees of all workplaces across all sectors throughout ...
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2005-10-10BuchDoes male age have an influence on the risk of spontaneous abortion? Slama, Rémy; Werwatz, Axel; Boutou, Odile; Ducot, Béatrice; Spira, Alfred; Härdle, Wolfgang KarlCouples from Western countries tend to delay their pregnancies, which may affect their ability to obtain a live birth. We assessed the association between male age and the risk of spontaneous abortion taking into account ...
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2006-05-31BuchEast Germany’s Wage Gap Görzig, Bernd; Gornig, Martin; Werwatz, AxelEast German wages have been below the West German wage level since unification. Moreover, the East-West wage gap implied by the contractual wages specified in collective wage agreements is drifting ever further apart from ...
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2006-01-26BuchEconomic Growth of Agglomerations and Geographic Concentration of Industries Geppert, Kurt; Gornig, Martin; Werwatz, AxelThe vast majority of regions in West Germany, and the EU, have become more similar interms of per-capita income and productivity between 1980 and 2000. But a number of richareas - generally large agglomerations - have ...
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2006-05-31BuchFirm Specific Wage Spread in Germany Görzig, Bernd; Gornig, Martin; Werwatz, AxelThe purpose of this paper is to sort out firm-related differences from effects that result from different economic structures. A non-parametric decomposition is used to analyse firm level difference between the wage spread ...
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2008-01-31BuchHouse Prices and Replacement Cost Schulz, Rainer; Werwatz, AxelAccording to housing investment models, house prices and replacement cost should have an equilibrating relationship. Previous empirical work mainly based on aggregate-level data has found only little evidence of such a ...
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2002-03-12BuchHow accurate do markets predict the outcome of an event? Schmidt, Carsten; Werwatz, Axel
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2020-01DiskussionspapierHow useful is listings data for research? Kolbe, Jens; Schulz, Rainer; Wersing, Martin; Werwatz, AxelCompared to other asset classes, information on transactions of residential real estate is scarce and available only with delay. Listing information from web-platforms is abundant and timely. Is listings data useful for ...
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2015-01-08BuchIdentifying Berlin's landvalue map using AdaptiveWeights Smoothing Kolbe, Jens; Schulz, Rainer; Wersing, Martin; Werwatz, AxelWe use Adaptive Weights Smoothing (AWS) of Polzehl and Spokoiny (2000, 2003, 2006) to estimate a map of land values for Berlin, Germany. Our data are prices of undeveloped land that was transacted between 1996-2009. Even ...
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2019-02-07DiskussionspapierLand value appraisal using statistical methods Kolbe, Jens; Schulz, Rainer; Wersing, Martin; Werwatz, AxelThe taxation of property based on market values requires frequent appraisals for a large number of properties. In light of the recent property tax reform discussion in Germany, it has been argued that a valuebased tax ...
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2012-05-30BuchLocation, location, location Kolbe, Jens; Schulz, Rainer; Wersing, Martin; Werwatz, AxelThe price for a single-family house depends both on the characteristics of the building and on its location. We propose a novel semiparametric method to extract location values from house prices. After splitting house ...
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2005-09-30BuchMarginal Employment – a Dead End? Kolb, Jürgen; Werwatz, Axel
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2000-11-01BuchOn the Job Search and the Wage Distribution Christensen, B. J.; Mortensen, D.T .; Neumann, G.; Werwatz, Axel
