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1 1 vote
1 1 answer
1.5k
1.5k views
When dealing with categorical values, should the 'year' column be encoded using OHE or OrdinalEncoder?
It's a car prices dataset, and so I'm assuming that the more recent the more value a car should have. The values in the 'year' column simply consist of years from 1995 to...
0 0 votes
1 answers 1 answer
2.8k
2.8k views
How to use Genetic Algorithm to optimize a function?
Assume the function is defined as $f(x,y)=x^2+y^2-4xy$, and $1\leq x \leq 4,1\leq y \leq 4$. The Genetic Algorithm is selected to maximize the function. If the first pop...
0 0 votes
1 answers 1 answer
3.8k
3.8k views
How to create a Decision Tree using the ID3 algorithm?
NASA wants to be able to discriminate between Martians (M) and Humans (H) based on thefollowing characteristics: Green ∈{N, Y }, Legs ∈{2, 3}, Height ∈{S, T}, Smelly ∈{N,...
0 0 votes
0 0 answers
632
632 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
435
435 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
421
421 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
495
495 views
Which algorithm is best to detect anomalies within a data set of 5k+ user-login events?
I am trying to build an unsupervised ML model to detect anomalies within 5000+ users' login data. I selected 5 features contained within each of the user-login events (e...
0 0 votes
0 0 answers
435
435 views
How we incorporate the polyline in machine learnning tools
Suppose I have to predict the traffic of a road segment based on available data such as number of houses and business along the road segment. Which machine learning tool ...
0 0 votes
0 0 answers
548
548 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
0 0 answers
610
610 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...
0 0 votes
1 1 answer
953
953 views
How best to ensure data quality?
0 0 votes
1 1 answer
859
859 views
Can we have multiple target values in a ML problem dataset for supervised learning?
0 0 votes
0 0 answers
403
403 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...
0 0 votes
0 0 answers
560
560 views
Intermittent Mathematics (Logarim)
The old keypad of the telephone, it has 10 numbers (10 keys) , this keypad allows the user to enter a text by successively pressing certain key many times in a small peri...
0 0 votes
0 0 answers
462
462 views
The old keypad of the telephone, it has 10 sume. yypad. after that yout
هاد سؤال رياضيات متقطعةThe old keypad of the telephone, it has 10 numbers (10 keys) , this keypad allows the user to enter a text by successively pressing certain key man...
1 1 vote
1 1 answer
790
790 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 ...
3 3 votes
0 0 answers
899
899 views
design a computer-based system that will encourage autistic children to communicate and express themselves better.
a) A company has been asked to design a computer-based system that will encourage autistic children to communicate and express themselves better.b) What type of interacti...
0 0 votes
0 0 answers
527
527 views
Very short text classification when category text should be replaced by another category text?
I need some tool to classify articles based on short category text which consists of two or three words separated by '-'. The RSS/XML tag content is for example:Foreign -...
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