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answer
CHANGED
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@@ -23,4 +23,39 @@
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23
23
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[0 1 2 3 4]
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24
24
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>>> print(np.dot(a, w))
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25
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[4 4 6]
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26
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```
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27
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forで回したいなら
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28
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```python
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29
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>>> import numpy as np
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30
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>>> def compute(d2array, warray):
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31
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... result = np.zeros(d2array.shape[0], dtype=a.dtype)
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32
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... for i in range(d2array.shape[0]):
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33
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... for j in range(d2array.shape[1]):
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34
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... result[i] = result[i] + d2array[i, j] * warray[j]
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35
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... return result
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36
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...
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37
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>>> a = np.array([[1,0,0,0,1],
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38
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... [0,0,0,0,1],
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39
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... [0,1,1,1,0]])
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40
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>>> w = np.array([0, 1, 2, 3, 4])
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41
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>>> print(compute(a,w))
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[4 4 6]
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43
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```
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44
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重みを他のものに変えたいときは、wを好きなように変更していください。
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45
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46
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numpyの機能を一切使わないなら、以下ですね。
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47
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```python
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48
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>>> def compute_l(alist_of_lists, aweight):
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49
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... result = []
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50
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... for alist in alist_of_lists:
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51
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... asum = 0
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52
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... for j in range(len(aweight)):
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53
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... asum = asum + alist[j] * aweight[j]
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... result.append(asum)
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... return result
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...
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>>> list_of_lists = [[1,0,0,0,1], [0,0,0,0,1], [0,1,1,1,0]]
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58
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>>> weight = [0, 1, 2, 3, 4]
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>>> print(compute_l(list_of_lists, weight))
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[4, 4, 6]
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```
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