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car-detection-bayes
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updates

This commit is contained in:
Glenn Jocher 2019-09-20 20:31:37 +02:00
parent eeb4cbc5c1
commit db49211d70
1 changed files with 8 additions and 9 deletions
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17
train.py
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@ -429,15 +429,14 @@ if __name__ == '__main__':
if os.path.exists('evolve.txt'): # if evolve.txt exists: select best hyps and mutate
# Select parent(s)
x = np.loadtxt('evolve.txt', ndmin=2)
if len(x) > 1:
parent = 'weighted' # parent selection method: 'single' or 'weighted'
if parent == 'single':
x = x[fitness(x).argmax()]
elif parent == 'weighted': # weighted combination
n = min(10, x.shape[0]) # number to merge
x = x[np.argsort(-fitness(x))][:n] # top n mutations
w = fitness(x) - fitness(x).min() # weights
x = (x[:n] * w.reshape(n, 1)).sum(0) / w.sum() # new parent
parent = 'weighted' # parent selection method: 'single' or 'weighted'
if parent == 'single' or len(x) == 1:
x = x[fitness(x).argmax()]
elif parent == 'weighted': # weighted combination
n = min(10, x.shape[0]) # number to merge
x = x[np.argsort(-fitness(x))][:n] # top n mutations
w = fitness(x) - fitness(x).min() # weights
x = (x[:n] * w.reshape(n, 1)).sum(0) / w.sum() # new parent
for i, k in enumerate(hyp.keys()):
hyp[k] = x[i + 7]