List of top Data Science Questions on Machine Learning asked in CBSE CLASS XII

Text documents are often grouped based on their content similarity to efficiently organize and categorise them for information retrieval systems and recommendation engines.
Identify and define the unsupervised learning method utilized in this context.
Explain cross-validation in data analysis.

The following diagram represents:

Which statement correctly describes the use of regression and classification trees based on the nature of the dependent variable?
What is a significant application of unsupervised learning in anomaly detection?
Which fundamental principle does the K-Nearest Neighbours (K-NN) algorithm operate on?
How does the curse of dimensionality affect the performance of the K-Nearest Neighbours (K-NN) algorithm?
In case of a classification tree, predictions on unseen data are made using the ...............
A website selling products uses recommendation engines to predict what products a customer is likely to purchase. This functionality is achieved through:
Which characteristics describe K-Nearest Neighbours (K-NN) algorithm?
Name the algorithm which makes predictions based on the outcomes of several decision trees.