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I am a beginner to Orange GUI data mining software and I have some questions related to that.

First, I would like to know if there is any search function so that I can search if a column contains a specific word.

Second, does Orange has any functions for Dimension reduction?

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Yes, Orange has a Dimensionality Reduction Widget under the Unsupervised Learning tab. Click PCA (Principal Component Analysis)

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As Ethan stated you can use the PCA widget to reduce the dimensions of your data.

To search internally try the select data by index widget.

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