Application of Data Mining Techniques in the Analysis of by Nuno M.M. Ramos, João M.P.Q. Delgado, Ricardo M.S.F. PDF

By Nuno M.M. Ramos, João M.P.Q. Delgado, Ricardo M.S.F. Almeida, Maria L. Simões, Sofia Manuel

ISBN-10: 3319222937

ISBN-13: 9783319222936

ISBN-10: 3319222945

ISBN-13: 9783319222943

The major advantage of the ebook is that it explores to be had methodologies for either undertaking in-situ measurements and appropriately exploring the consequences, in accordance with a case learn that illustrates the advantages and problems of concurrent methodologies.

The case learn corresponds to a collection of 25 social housing dwellings the place an intensive in situ size crusade was once performed. The dwellings can be found within the related region of a urban. Measurements incorporated indoor temperature and relative humidity, with non-stop log in several rooms of every residing, blower-door checks and whole open air stipulations supplied by means of a close-by climate station.

The publication contains a number of clinical and engineering disciplines, corresponding to construction physics, chance and records and civil engineering. It offers a synthesis of the present country of information for advantage of expert engineers and scientists.

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G. a difference of 10 cm could being a difference of 100 mm). In addition, if one variable has a much wider range than others then this variable will tend to dominate. For example, if body measurements had been taken for a number of different people, the range (in mm) of heights would be much wider than the range in wrist circumference, say. To get around this problem each variable can be standardized (converted to z-scores). However, this in itself presents a problem as it tends to reduce the variability (distance) between clusters.

Step 8 Interpretation of results. • Interpretation rules The factorial axes resulting from a Principal Component Analysis constitute a new hierarchical basis space engendered by the data, whose total inertia is given by: 22 3 Data Mining Techniques Ig ¼ tr ðX T XÞ ¼ p X ka ð3:25Þ a¼1 Each axis is responsible for a certain percentage of the cloud of inertia, given by: 100 Á ka Ig ð3:26Þ The basic aim of Principal Component Analysis is to reduce the size of the spaces at stake. A convenient way to visualize the cloud will project it in the plans defined by the factorial axes that represent together a percentage deemed sufficient inertia.

6 Dendograms of clustering houses by using Ward’s method (left) and average linkage (right) differences in the cluster composition. The sensitivity of Ward’s method to outliers’ identification is clear as in this method dwellings 15 and 17 would be separated from the rest of the houses. These dwellings had prior revealed a clearly different behavior. Chapter 6 Conclusions Abstract This chapter presents the main conclusions, stressing how descriptive statistics combined with multivariate analysis can be applied to a specific case study.

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Application of Data Mining Techniques in the Analysis of Indoor Hygrothermal Conditions by Nuno M.M. Ramos, João M.P.Q. Delgado, Ricardo M.S.F. Almeida, Maria L. Simões, Sofia Manuel

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