calc and filter function？？？

[xiximin]

What do the calc function and filter function in utils.py mean?

def filter(data, template, radius=5): arr=np.array(data) length=arr.shape[0]
newData=np.zeros(length)

for j in range(radius//2,arr.shape[0]-radius//2):
    t=arr[ j-radius//2:j+radius//2+1]
    a=np.multiply(t,template)
    newData[j]=a.sum()
# expand
for i in range(radius//2):
    newData[i]=newData[radius//2]
for i in range(-radius//2,0):
    newData[i]=newData[-radius//2]    
# import pdb;pdb.set_trace()
return newData

def calc(r=5, sigma=2): k = np.zeros(r) for i in range(r): k[i] = 1/((2*math.pi)0.5sigma)math.exp(-((i-r//2)2/2/(sigma**2))) return k

[ktr-hubrt]

it is for temporal smoothing of anomaly scores