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Hot questions
2
2 votes
1
answers
1 answer
2.1k
2.1k views
Feature scaling: standardization vs Normalization
Hi,After learnt feature scaling, I have some questions regarding Normalization.Standardization: rescales data to have a mean of 0 and standard deviation of 1 after a data...
fayeezhao
170
points
1
1
2
asked
Oct 3, 2018
Machine Learning
normalizing
+
–
1
1 vote
1
1 answer
1.1k
1.1k views
Explain the typical data analysis process.
rozhan
710
points
5
5
9
asked
Oct 28, 2018
Data Science Interview Questions
data-science
data-analysis
+
–
1
1 vote
1
1 answer
885
885 views
In the first week of November 2003.... What is the expected number of homicides per week in the GTA?
This is from question one from lecture 4B's exercises: "In the first week of November 2003, five unrelated homicides were reported in the GTA. The GTA usually has about 7...
KenTheStatsMan
430
points
5
5
7
asked
Nov 2, 2018
general
statistics
expected-value
random-variable
+
–
1
1 vote
1
1 answer
1.4k
1.4k views
how to choose the number of clusters based on intertia and based on silhouette using K-means
how to choose the number of clusters based on intertia and based on silhouette using K-means
Neo
660
points
10
12
17
asked
Oct 19, 2018
Machine Learning
k-means
clustering
+
–
1
1 vote
0
0 answers
637
637 views
How to measure the usability of your prototypes on mobile devices?
Q1) Please answer these questions:What are the best practices for UX surveys of a mobile application?How to collect data from users?Q2) Research about the following usabi...
tofighi
116k
points
74
79
101
asked
Nov 8, 2018
Human Computer Interaction
hci
design
survey
mobile
+
–
1
1 vote
1
1 answer
1.0k
1.0k views
How will you create a classification to identify key customer trends in unstructured data?
rozhan
710
points
5
5
9
asked
Oct 28, 2018
Data Science Interview Questions
data-science
+
–
1
1 vote
1
1 answer
1.0k
1.0k views
How to discover outliers of a data frame?
rozhan
710
points
5
5
9
asked
Oct 28, 2018
Statistics
outliers
outlier
boxplot
percentile
python
+
–
2
2 votes
1
answers
1 answer
2.1k
2.1k views
A standard deck of 52 cards is shuffled and a single card is drawn. What is the probability that this card is a Joker
This is question 1d in the 2B exercises. The answer says the probability is 0 but I count 4 jokers in a 52 card deck, which means the probability is 1/13. Think I misunde...
KenTheStatsMan
430
points
5
5
7
asked
Oct 1, 2018
general
probability
statistics
+
–
1
1 vote
1
1 answer
896
896 views
What is the difference between machine learning and deep learning?
askds
500
points
6
6
9
asked
Oct 30, 2018
Deep Learning Interview Questions
machine-learning
deep-learning
+
–
1
1 vote
1
1 answer
992
992 views
Which scenarios among the following are a valid reason to use regularization?
A. To drop the least useful variables of a modelB. To reduce over-fittingC. To reduce the bias of a modelD. To decrease p-value
Gabriel777
280
points
2
2
5
asked
Oct 27, 2018
Data Science Interview Questions
statistics
data-science
programming
combination
+
–
1
1 vote
2
2 answers
2.3k
2.3k views
How to calculate the percentiles in statistics?
I have these series of numbers and I am wondering each one is how much percentile and also how to calculate a custom percentile such as 60th percentile? [1, 3, 5, 7, 9, 9...
tofighi
116k
points
74
79
101
asked
Sep 25, 2018
Statistics
statistics
percentile
+
–
1
1 vote
1
1 answer
2.4k
2.4k views
What is the best roadmap to choose the right estimator in scikit-learn?
I am looking for a roadmap for choosing the right estimator in scikit-learn
tofighi
116k
points
74
79
101
asked
Sep 25, 2018
Machine Learning
machine-learning
scikit-learn
refs
reference
cheat-sheet
+
–
1
1 vote
1
1 answer
2.2k
2.2k views
Access denied while updating Anaconda?
I am trying to update the Anaconda through cmd terminal but I am getting an error message of Access is denied. Although I am updating it through Admin account only. What ...
Mansidhawan
130
points
1
1
1
asked
Sep 29, 2018
Python
anaconda
cmd
error
+
–
1
1 vote
1
1 answer
925
925 views
What is the difference between Data Mining and Data Analysis?
rozhan
710
points
5
5
9
asked
Oct 28, 2018
Data Science Interview Questions
data-science
data-mining
data-analysis
+
–
2
2 votes
2
2 answers
1.3k
1.3k views
plotting categorical radio
Hello,I am trying to gain insight of the data but having hard time plotting it.Suppose I have a data frame like belowIDFeature 1Class1agood2agood3bgood4bbad5abad6abad7bba...
Neo
660
points
10
12
17
asked
Oct 16, 2018
Python
python
programming
plots
matplotlib
+
–
4
4 votes
1
1 answer
1.4k
1.4k views
Logstash takes more than 48 hours to ingest 10 GB CSV file. Is there a way to expedite?
I have a 10 GB CSV file and it takes more than 48 hours for logstash installed on my laptop to ingest the whole data. Is there a way to accelerate this process?
askdatascience
1.0k
points
12
13
16
asked
Oct 14, 2018
Big Data Tools
big-data
logstash
optimiaztion
+
–
0
0 votes
2
answers
2 answers
995
995 views
What are the Gaussian equation parameters?
From the following equation, please explain what are the parameters ( $\sigma$ and $\mu$ ) of the Gaussian equation?$ g(x) = \frac{1}{\sigma\sqrt{2\pi}} e^{ -\frac{1}{2}\...
tofighi
116k
points
74
79
101
asked
Sep 1, 2018
Statistics
math
gaussian
+
–
1
1 vote
1
1 answer
2.5k
2.5k views
What is the relationship between Interaction Design and Human-Computer Interaction?
FizzBuzz
230
points
2
2
2
asked
Sep 20, 2018
Human Computer Interaction
hci
design
+
–
1
1 vote
1
1 answer
1.0k
1.0k views
What are the Interaction Design Basics?
hurtadro
450
points
5
5
6
asked
Oct 25, 2018
Human Computer Interaction
hci
design
+
–
0
0 votes
1
1 answer
828
828 views
What is unsupervised learning?
wxeshetu
400
points
5
5
8
asked
Oct 29, 2018
Data Science
unsupervised-learning
+
–
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