def test():
hnn, alpha = 30, 0.05
nt = NetTable(hnn, alpha)
records_tra = read_records('../docs/digitstra.txt')
records_tes = read_records('../docs/digitstest.txt')
#records_tra = read_records('data.txt')
#records_tes = read_records('data.txt')
print "tranning..."
for record in records_tra:
for i in range(2):
nt.back_propagate(record[:64], record[64])
print "testing..."
count = 0
for record in records_tes:
print "expect:", record[64],
result = nt.feed_forward(record[:64])[1]
index, value = 0, result[0]
for ind, val in enumerate(result):
if val > value:
index = ind
print "estimate:", index, result
if record[64] == index:
count = count + 1
print "%d of %d" % (count, len(records_tes))
def test(nh, alpha, beta):
#nh, alpha, beta = 200, 0.05, 0.2 的时候正确率可以达到92%
nt = NetTable(nh, alpha, beta)
nt.train(records_tra)
count = 0
for record in records_tes:
result = nt.feed_forward(record[:64])[1]
maxindex, maxvalue = 0, max(result)
for index in range(10):
if result[index] == max(result):
maxindex = index
if maxindex == record[64]:
count = count + 1
print "%d,%.4f,%.4f,%.4f" % (nh, alpha, beta, (float(count) / len(records_tes)))