Query about classification of data in WEKA

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Query about classification of data in WEKA

Juan Sebastian Mejia
Hello everyone, I'm new using WEKA. I am developing a solar radiation prediction project with some meteorological variables as input of the model: Hours of solar brightness, cloudiness, maximum temperature, minimum temperature, relative humidity, etc.

I used WEKA as a tool to identify which of these input variables are the most relevant and correlated in relation to solar radiation.

I chose Select Attributes: PrincipalComponents as an attribute evaluator and the Ranker search method.

I got the following results:

Evaluator:    weka.attributeSelection.PrincipalComponents -R 0.95 -A 5
Search:       weka.attributeSelection.Ranker -T -1.7976931348623157E308 -N -1
Relation:     solarradiation
Instances:    1275
Attributes:   8
              HorasBrillo
              Nubosidad
              TempMax
              TempMin
              HumedadRelativa
              VeloViento
              Precipitacion
              Radiacion
Evaluation mode:    evaluate on all training data

=== Attribute Selection on all input data ===

Search Method:
    Attribute ranking.

Attribute Evaluator (unsupervised):
    Principal Components Attribute Transformer

Correlation matrix
  1     -0.58   0.65  -0.08  -0.37   0     -0.05
 -0.58   1     -0.44   0.06   0.23   0.05   0.07
  0.65  -0.44   1      0.38  -0.76   0.15  -0.15
 -0.08   0.06   0.38   1     -0.46   0.32  -0.07
 -0.37   0.23  -0.76  -0.46   1     -0.38   0.25
  0      0.05   0.15   0.32  -0.38   1     -0.11
 -0.05   0.07  -0.15  -0.07   0.25  -0.11   1   

eigenvalue    proportion    cumulative
  2.75383      0.3934       0.3934     -0.552TempMax+0.513HumedadRelativa-0.418HorasBrillo+0.335Nubosidad-0.27TempMin...
  1.58542      0.22649      0.61989    -0.521TempMin-0.484VeloViento-0.473Nubosidad+0.445HorasBrillo+0.225HumedadRelativa...
  0.9575       0.13679      0.75668    0.957Precipitacion+0.256TempMin+0.115TempMax+0.063HorasBrillo+0.038VeloViento...
  0.72674      0.10382      0.8605     -0.828VeloViento+0.447TempMin+0.21 TempMax+0.165Nubosidad-0.16HorasBrillo...
  0.51814      0.07402      0.93452    0.751Nubosidad-0.453TempMin-0.288HumedadRelativa+0.286HorasBrillo+0.239TempMax...
  0.31912      0.04559      0.98011    -0.608HorasBrillo-0.604HumedadRelativa-0.398TempMin-0.268Nubosidad+0.152Precipitacion...

Eigenvectors
 V1     V2     V3     V4     V5     V6   
-0.4184     0.4455     0.0629    -0.16       0.2865    -0.6084    HorasBrillo
 0.3352    -0.4734     0.0164     0.1648     0.7512    -0.2679    Nubosidad
-0.552      0.0616     0.1149     0.2104     0.2387     0.019     TempMax
-0.2699    -0.5214     0.2564     0.4468    -0.4526    -0.3976    TempMin
 0.5126     0.2248    -0.0011    -0.0795    -0.288     -0.6041    HumedadRelativa
-0.2088    -0.4839     0.0381    -0.8283    -0.0697    -0.1067    VeloViento
 0.1693     0.1307     0.9568    -0.1044     0.0634     0.1524    Precipitacion

Ranked attributes:
 0.6066  1 -0.552TempMax+0.513HumedadRelativa-0.418HorasBrillo+0.335Nubosidad-0.27TempMin...
 0.3801  2 -0.521TempMin-0.484VeloViento-0.473Nubosidad+0.445HorasBrillo+0.225HumedadRelativa...
 0.2433  3 0.957Precipitacion+0.256TempMin+0.115TempMax+0.063HorasBrillo+0.038VeloViento...
 0.1395  4 -0.828VeloViento+0.447TempMin+0.21 TempMax+0.165Nubosidad-0.16HorasBrillo...
 0.0655  5 0.751Nubosidad-0.453TempMin-0.288HumedadRelativa+0.286HorasBrillo+0.239TempMax...
 0.0199  6 -0.608HorasBrillo-0.604HumedadRelativa-0.398TempMin-0.268Nubosidad+0.152Precipitacion...

Selected attributes: 1,2,3,4,5,6 : 6


I would like to know how to interpret these results. I am also interested in knowing if I obtained good results and what other methods or tools I can use and how to interpret these results.

Attached file .arff

Thank you all.

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Radiacion.arff (83K) Download Attachment