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Recent questions in Data Science

1 1 vote
1 1 answer
1.6k
1.6k views
How to analyse imbalanced categorical colum in dataset
Hello,I have a dataset with a categorical column that contains three categories. One of the categories represents 98% of the data, while the remaining 2% are distributed ...
0 0 votes
0 0 answers
1.3k
1.3k views
Can you verify the validity of this chart comparing the review scores for Marvel Phase 4?
I have some skepticism about the validity of the charts below comparing the critic and audience reviews for Phase 4 of the MCU to the previous 3 phases. There are over 18...
0 0 votes
0 0 answers
1.3k
1.3k views
How do I compare the count of a value in each year while having a different sanple size each year.
How do I accurately compare between the number of something a survey measure from my employees each year with a varying umber of survey engagement and employee size?If I ...
0 0 votes
0 0 answers
1.4k
1.4k views
Is it possible to make a forecast of a future value of Air Temperature using Fast Fourier Transform?
Is it possible to make a forecast of a future value of Air Temperature using Fast Fourier Transform, if yes, what should be the process or how you'll be able to do it. Th...
0 0 votes
0 0 answers
1.3k
1.3k views
forecast log transformed fitted values for 2 years using ARMA model
Input is a stock price in exponential transformation. We are asked to forecast using ARMA results for 2 years.
0 0 votes
0 0 answers
991
991 views
Battery data projects
Where can I find projects related to battery data?
1 1 vote
0 0 answers
1.1k
1.1k views
How can you build dynamic pricing model with data only from rigid pricing?
I want to build a dynamic pricing model which means if product is too expansive for a client and there is a risk that we might loose a client we lower the price for them ...
0 0 votes
0 0 answers
808
808 views
What analytical software would be good for a company to use?
This would be for a company that is just now looking into using a software to track data for wine making.
0 0 votes
0 0 answers
548
548 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...
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...
0 0 votes
0 0 answers
371
371 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...
0 0 votes
0 0 answers
367
367 views
Can Data Science solve this problem?
So, I live in Brazil, and I have a task for college that I don't know what data science method to use, if at all, to solve it. My idea is the following: We Brazilians hav...
0 0 votes
0 0 answers
462
462 views
should i start as a data analyst then data science?
should I start as a data analyst then data science?I am a second-year Bachelor's in Computer Science and wanted to pursue to be a Data Scientist.However, when I am trying...
0 0 votes
1 1 answer
850
850 views
How best to ensure data quality?
0 0 votes
0 0 answers
344
344 views
Searching for movie dataset containing movie synopses/plots?
HelloTo build a hybrid recommendation system, I used the movielens 1M dataset, for the collaborative filtering part. Now, I'm looking for a database/dataset that contains...
1 1 vote
1 1 answer
647
647 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 ...
1 1 vote
1 answers 1 answer
824
824 views
Terminology clarification in Spark
I have a hard time distinguishing terminologies of SparkSQL. While SparkSQL are quite flexible in terms of abstraction layers, its really difficult for beginner to naviga...
0 0 votes
0 0 answers
372
372 views
My GloVe word embeddings contain sentiment?
I've been researching sentiment analysis with word embeddings. I read papers that state that word embeddings ignore sentiment information of the words in the text. One pa...
0 0 votes
0 0 answers
410
410 views
is it possible to derive a new 95% CI from two separate 95% CIs?
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