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Results tagged with machine-learning
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user 94070
Machine Learning is a subfield of computer science that draws on elements from algorithmic analysis, computational statistics, mathematics, optimization, etc. It is mainly concerned with the use of data to construct models that have high predictive/forecasting ability. Topics include modeling building, applications, theory, etc.
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Getting a best k in KNN Algorithm
So, i was learning the KNN Algorithm and there i learnt cross Validation to find a optimal value of k.Now i want to apply grid search to get the optimal value.I found an answer on stack overflow where …
- 165
3
votes
value error of incompatible wrong dimension during training a model
As per the documentation, whenever the transformer expects a 1D array as input, the columns were specified as a string ("xxx"). For the transformers which expects 2D data, we need to specify the colum …
- 165
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plotting a decision tree based on gridsearchcv
i was trying to plot the decision tree which is formed with GridSearchCV, but its giving me an Attribute error.
AttributeError: 'GridSearchCV' object has no attribute 'n_features_'
However if i try …
- 165
0
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1
answer
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Effect on regression coefficients by multiplying a constant to a feature
I was solving one quiz question on Coursera and I found an interesting question.
If you double the value of a given feature (i.e. a specific column of
the feature matrix), what happens to the least-s …
- 165
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answer
2k
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value error of incompatible wrong dimension during training a model
I was implementing a decision tree on a dataset. Before that, I wanted to transform a particular column with CountVectorizer. For this, I am using pipeline to make it simpler.
But there is an error of …
- 165