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user35581

Data scientist / developer

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Top Questions
59 votes

Pandas apply but only for rows where a condition is met

python pandas dataframe apply asked Nov 18 '15 at 0:43
stackoverflow.com

57 votes

Split column into multiple rows in Postgres

sql postgresql split set-returning-functions asked Apr 2 '15 at 18:31
stackoverflow.com

45 votes

SQLAlchemy - performing a bulk upsert (if exists, update, else insert) in postgresql

python postgresql sqlalchemy flask-sqlalchemy asked Sep 21 '14 at 2:24
stackoverflow.com

28 votes

Shipping Python modules in pyspark to other nodes

python apache-spark asked Jul 10 '14 at 21:18
stackoverflow.com

26 votes

How much additional mass does the Earth gain each day from solar radiation?

energy-conservation earth thermal-radiation mass-energy estimation asked Jan 12 '17 at 17:07
physics.stackexchange.com

22 votes

How to pass another bicycle in a bike lane

safety asked Aug 11 '16 at 20:37
bicycles.stackexchange.com

17 votes

Combining random forest models in scikit learn

python python-2.7 scikit-learn classification random-forest asked Feb 12 '15 at 23:11
stackoverflow.com

16 votes

Sampling a large distributed data set using pyspark / spark

hadoop apache-spark asked Jul 17 '14 at 14:17
stackoverflow.com

15 votes

Ordering and pagination in SQL-alchemy using non-sql ranking

python flask pagination sqlalchemy flask-sqlalchemy asked Jul 3 '14 at 17:58
stackoverflow.com

15 votes

Creating a Spark DataFrame from an RDD of lists

apache-spark dataframes pyspark asked Apr 7 '15 at 20:53
stackoverflow.com

1 2 3

Top Answers
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Restart R within Rstudio
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41
Group query results by month and year in postgresql
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41
memory error in python
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39
Changing multiple column names but not all of them - Pandas Python
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38
How to write DataFrame to postgres table?
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34
SQLAlchemy - performing a bulk upsert (if exists, update, else insert) in postgresql
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25
How to qcut with non unique bin edges?
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24
psql: FATAL: Peer authentication failed for user “dev”
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24
Combining random forest models in scikit learn
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21
Python speed testing - Time Difference - milliseconds
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21
Sampling a large distributed data set using pyspark / spark
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17
Create an empty list in python with certain size
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14
Creating a Spark DataFrame from an RDD of lists
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14
Scikit-learn is returning coefficient of determination (R^2) values less than -1
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13
R error in glmnet: NA/NaN/Inf in foreign function call
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13
Make more than one chart in same IPython Notebook cell
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12
Can dask parralelize reading fom a csv file?
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11
Python: Plotting percentage in seaborn bar plot
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9
permanently remove directory from python path
stackoverflow.com

7
extracting days from a numpy.timedelta64 value
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7
Detect and exclude outliers in Pandas data frame
stackoverflow.com

6
What is the practical application of bool() in Python?
stackoverflow.com

6
How to check if float pandas column contains only integer numbers?
stackoverflow.com

5
Remove Outliers in Pandas DataFrame using Percentiles
stackoverflow.com

5
Why do solar panels not have focusing mirrors?
physics.stackexchange.com