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GA interface is appending new generation output to new json file, rather than having one generation output per json file

according to the input file:

          INITIALPOPULATION=100,
          MAXGENERATIONS=2,
          NUM_MASTERS=1, 
          NUM_COWORKERS=8, 
          SIMTMPDIR="tmp", 
          TEMPLATEDIR="tmpl", 
          FIELDMAPDIR="fieldmaps",
          NUM_IND_GEN=100,
          GENE_MUTATION_PROBABILITY=0.8,
          MUTATION_PROBABILITY=0.8,
          RECOMBINATION_PROBABILITY=0.2;

It seems like this should be 200 samples (100 in population x 2 generations)

However, using mldb to convert to pk reports 300 samples:

OPAL ML Database Generator 
Found 2 json files.
Write ML-Database 1nCGA-small-test.pk
xDim        = 6 -> ['G0', 'G1', 'K0', 'K1', 'PH0', 'PH1']
yDim        = 7 -> ['DE', 'EMITS', 'EMITX', 'EMITY', 'RMSS', 'RMSX', 'RMSY']
generations = 2
Data points  = 300

Looking at the json files:

  • 1_1nCGA_0.json has 100 individuals
  • 2_1nCGA_0.json has 200 individuals

And if we compare the first individual in each case, they are both the same:

			"G0": 63.7949,
			"G1": 17.5757,
			"K0": 474.876,
			"K1": 185.284,
			"PH0": -8.94274,
			"PH1": -2.44182

So it looks like new data is just being appended to the new json file in subsequent generations rather than creating a new file for each generation with only that generation's data in it.

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