コード例 #1
0
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))
コード例 #2
0
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)))