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Results tagged with data
Search options questions only
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user 50449
Questions mostly concerned with managing data, without focus on pre-processing or modelling.
2
votes
3
answers
21k
views
Is there a way to replace existing values with NaN
I'm experimenting with the algorithms in iPython Notebooks and would like to know if I can replace the existing values in a dataset with Nan (about 50% or more) at random positions with each column ha …
- 351
8
votes
2
answers
70k
views
How to delete entire row if values in a column are NaN [closed]
I'd like to drop all the rows containing a NaN values pertaining to a column. Lets assume I have a dataset like this:
Age Height Weight Gender
12 5'7 NaN M
NaN 5'8 160 M
32 …
- 351
2
votes
2
answers
642
views
Is there are way to impute missing values by clustering, regression and stochastic regression
My code for KNN imputation:
import pandas as pd
import numpy as np
import random
from fancyimpute import KNN
data = pd.read_csv("D:/Iris_classification/train.csv")
mat = data.iloc[:,:4].as_matrix …
- 351