以下是目标变量在训练集上的 8 个实际值 [0,0,0,1,1,1,1,1],目标变量的熵是所少() A: -(5/8 log(5/8) + 3/8 log(3/8)) B: 5/8 log(5/8) + 3/8 log(3/8) C: 3/8 log(5/8) + 5/8 log(3/8) D: 5/8 log(3/8) – 3/8 log(5/8)
以下是目标变量在训练集上的 8 个实际值 [0,0,0,1,1,1,1,1],目标变量的熵是所少() A: -(5/8 log(5/8) + 3/8 log(3/8)) B: 5/8 log(5/8) + 3/8 log(3/8) C: 3/8 log(5/8) + 5/8 log(3/8) D: 5/8 log(3/8) – 3/8 log(5/8)
CRH380B型动车组牵引变流器设置在[ ]车、牵引变压器设置在[ ]车。 A: 1/3/6/8、3/6 B: 2/4/6/8、2/7 C: 1/3/6/8、2/7 D: 1/4/6/7、3/6
CRH380B型动车组牵引变流器设置在[ ]车、牵引变压器设置在[ ]车。 A: 1/3/6/8、3/6 B: 2/4/6/8、2/7 C: 1/3/6/8、2/7 D: 1/4/6/7、3/6
A: (1)______ me!B: (2)______ ?A: (3)______ this (4)______ handbag?B: (5)______ ?A: Is this your(6)______ ?B: Let me (7)______ . Ah, (8)______ , it is.A: (9)______ you are.B: (10)______ you very much.
A: (1)______ me!B: (2)______ ?A: (3)______ this (4)______ handbag?B: (5)______ ?A: Is this your(6)______ ?B: Let me (7)______ . Ah, (8)______ , it is.A: (9)______ you are.B: (10)______ you very much.
如果 frame = [[1,2,3],[4,5,6],[7,8,9]],则rgb = frame[::-1]的值是: A: [[7, 8, 9]] B: [[1,2,3],[4,5,6],[7,8,9]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[1, 2, 3], [4, 5, 6]]
如果 frame = [[1,2,3],[4,5,6],[7,8,9]],则rgb = frame[::-1]的值是: A: [[7, 8, 9]] B: [[1,2,3],[4,5,6],[7,8,9]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[1, 2, 3], [4, 5, 6]]
Alan __________ me at 8:00 this morning.
Alan __________ me at 8:00 this morning.
已知x[sup]3/4[/] =2√2,则x=() A: 8 B: 3 C: 2 D: 4
已知x[sup]3/4[/] =2√2,则x=() A: 8 B: 3 C: 2 D: 4
以下程序的输出结果是: frame = [[1,2,3],[4,5,6],[7,8,9]] rgb = frame[::-1] print(rgb) A: [[7, 8, 9]] B: [[1,2,3],[4,5,6],[7,8,9]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[1, 2, 3], [4, 5, 6]]
以下程序的输出结果是: frame = [[1,2,3],[4,5,6],[7,8,9]] rgb = frame[::-1] print(rgb) A: [[7, 8, 9]] B: [[1,2,3],[4,5,6],[7,8,9]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[1, 2, 3], [4, 5, 6]]
以下程序的输出结果是:( )。frame = [[1,2,3],[4,5,6],[7,8,9]]rgb = frame[::-1]print(rgb) A: [[1,2,3],[4,5,6],[7,8,9]] B: [[1, 2, 3], [4, 5, 6]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[7, 8, 9]]
以下程序的输出结果是:( )。frame = [[1,2,3],[4,5,6],[7,8,9]]rgb = frame[::-1]print(rgb) A: [[1,2,3],[4,5,6],[7,8,9]] B: [[1, 2, 3], [4, 5, 6]] C: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] D: [[7, 8, 9]]
[音频]Dialogue 2Man: Excuse me, I‘m looking for _________. Can you help me?
[音频]Dialogue 2Man: Excuse me, I‘m looking for _________. Can you help me?
以下程序的输出结果是:<br/>frame<br/>= [[1,2,3],[4,5,6],[7,8,9]]; rgb<br/>= frame[::-1]; print(rgb) A: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] B: [[1, 2, 3], [4, 5, 6]] C: [[7, 8, 9]] D: [[1,2,3],[4,5,6],[7,8,9]]
以下程序的输出结果是:<br/>frame<br/>= [[1,2,3],[4,5,6],[7,8,9]]; rgb<br/>= frame[::-1]; print(rgb) A: [[7, 8, 9], [4, 5, 6], [1, 2, 3]] B: [[1, 2, 3], [4, 5, 6]] C: [[7, 8, 9]] D: [[1,2,3],[4,5,6],[7,8,9]]