“…Neural networks were also involved in valuation (Kontrimas & Verikas, 2011;Chun Lin & Mohan, 2011;Mimis, et al, 2013) and fuzzy logic (González & Formoso, 2006;Lughofer, et al, 2011;Wang, et al, 2015). The heuristic abilities of the listed groups of methods work best in analysing entire markets (Trojanek, 2010;Kozioł-Kaczorek, 2012;Brzezicka & Wiśniewski 2012;Simonotti, et al, 2014;Bracke, 2015;Dmytrów & Gnat, 2019), examining their regularity or disturbances, finding traces of economic events (Shiller, 1990;Żelazowski, 2008) and studying the spatial distribution of phenomena (Bittner, et al, 2007;Celmer, 2014;Bourassa et al 2007Bourassa et al , 2010, trends or threats (Bianco, 2008;Bełej, 2013). Some of the few attempts to develop statistical methods in the field described today as giving opinions on value were: the Isakson concept aimed at simplification through a simple selection of the closest comparables, classified by the author as "the Nearest Neighbours Appraisal" (Isakson, 1986) and some contemporary research of Barańska (2016) focused on the influence of database size on predicting the property market value.…”