Preweda, Edward
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inżynieria lądowa, geodezja i transport
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Item type:Article, Access status: Open Access , Analiza krakowskiego rynku nieruchomości na tle wybranych krajów Unii Europejskiej(Wydawnictwa AGH, 2005) Jasińska, Elżbieta ; Preweda, Edward ; Ruchel, JanIn the paper the situation of the Polish market of real estates was presented and compared with other countries of the European Union. Average prices of real estates in respective countries were defined, the analysis of price differences between capitals was made, the size of cities was taken into account, and the growth of the number of transactions before and after the accession was presented. The problem of purchasing land by foreigners was shown. The main focus was on the analysis of the Krakow market of real estates, regarding its advantages, disadvantages, and development of the city and development of economy, market of apartments, not built-up land, office surfaces and commercial space.Item type:Article, Access status: Open Access , The application of factorial analysis in the classification of the attributes of real estates(Wydawnictwa AGH, 2005) Jasińska, Elżbieta ; Preweda, EdwardWhen asking about the estimation of the market value of real estates it is very important to define the influence of respective attributes of real estates on their prices. The features of real estates are usually correlated one with another. High correlation between the explaining attributes shows that they explain the same part of the variability of prices, thus from practical and economic point of view, the attributes bringing similar information should be eliminated. To establish the influence of the attributes on the prices of real estates, factorial analysis was applied. Its main application is the reduction of the number of variables and detection of structure in the relationships between variables, i.e. classification of variables. Among several methods of factorial analysis the method of main components was chosen. This method allows the selection of the number of factors by the expert in evaluation of real estate. In the analysis of main components, after selecting the first factor one can define subsequent ones, which maximize the remaining variability. Since every following factor is defined in such a way that the variability not covered by the previous ones could be maximized, subsequent factors are independent from one another. It is a subjective decision to establish a number of selected factors and methods of their selection. Among the most often applied statistical methods, in the paper the Kaiser criterion and talus test were used.Item type:Article, Access status: Open Access , Methods of selecting factors in the analysis of the real estates market(Wydawnictwa AGH, 2006) Jasińska, Elżbieta ; Preweda, EdwardIn the paper the problem of selecting the method of choosing factors in factorial analysis is presented. For the database of 61 real estates the process of singling out the factors was carried out with the use of all the methods proposed in the STATISTICA 6.0 pack. A particular attention was paid on the number of differentiated factors and the efficiency of subsequent methods for the analysis of the real estates market.