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Recent questions tagged data
0
0 votes
0
0 answers
549
549 views
How do I know which encoder to use to convert from categorical variables to numerical?
So say I have a column with categorical data like different styles of temperature: 'Lukewarm', 'Hot', 'Scalding', 'Cold', 'Frostbite',... etc.I know that we can use pd.ge...
Anas
150
points
2
2
4
asked
Nov 28, 2021
Exploratory Data Analysis
machine-learning
test-set
data
predict
onehotencoder
pandas
dataframe
data-science
data-analysis
data-cleaning
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–
0
0 votes
0
0 answers
1.9k
1.9k views
ValueError: Length mismatch: Expected axis has 60 elements, new values have 2935849 elements
I'm creating a new data frame with the most used items grouped together. But I got the following error when grouping through ID and items. ValueError: Length mismatch: Ex...
aryansan
120
points
1
1
3
asked
Nov 26, 2021
Exploratory Data Analysis
data
python
+
–
0
0 votes
0
0 answers
372
372 views
Classification of data object might be incorrect
I am learning a new Salesforce product (Evergage) for the company I work for. In the program's documentation they have listed a set of data objects as an example. It appe...
russ00
120
points
1
3
asked
Oct 25, 2021
General
data
objects
+
–
0
0 votes
0
0 answers
530
530 views
how many samples do we need to test image segmentation using synthetic data ?
Hello,I trained a CNN using synthetic data to perform a segmentation task on human faces. During the test and to evaluate the prediction of this network, I used 200 examp...
HbibOs
120
points
1
1
3
asked
Jun 21, 2021
Deep Learning
machine-learning
data
predict
deep-learning
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–
0
0 votes
1
1 answer
851
851 views
How best to ensure data quality?
Anna
120
points
1
1
3
asked
Jun 8, 2021
Data Science
data
+
–
1
1 vote
1
1 answer
649
649 views
How to calculate average with deviating sensors?
In case of 3 sensors reporting loads of values individually.. one sensor might be off. The average of the 2 trustworthy sensors is to be reported.. the third in need for ...
hattum
170
points
1
1
3
asked
May 4, 2021
Data Science
data-analysis
data
data-science
+
–
1
1 vote
1
1 answer
724
724 views
Do I need to save the standardization transformation?
When I standardized my data when I created my model. Do I need to save the standardization transformation when I want to predict with my model new data ?
metelon
140
points
1
1
3
asked
Dec 15, 2020
Machine Learning
machine-learning
predict
data
match
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–
0
0 votes
0
0 answers
411
411 views
is it possible to derive a new 95% CI from two separate 95% CIs?
aaditi
120
points
1
3
asked
Nov 23, 2020
Statistics
data
+
–
0
0 votes
1
1 answer
1.0k
1.0k views
How to predict from unseen data?
Hi. I have a question about model-based predictions when data is only available after the fact. Let me give you an example. I try to predict the result (HOME, AWAY or a D...
Kesz
180
points
2
2
5
asked
Nov 17, 2020
Machine Learning
machine-learning
data
predict
unseen
match
football
soccer
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–
1
1 vote
1
1 answer
3.8k
3.8k views
What are the most common data types in data science?
What are the main data types?
tofighi
116k
points
73
79
101
asked
Feb 19, 2020
General
data-science
data
+
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