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Showing posts with label data mining. Show all posts
Showing posts with label data mining. Show all posts

Saturday, October 8, 2011

Text Analytics with RapidMiner Part 6 of 6 - Applying the Model to New Documents

After my last series, I got a lot of questions about how to apply a model to new data, so here is the real final installment in the series.

I show how to save a wordlist and model to the repository. I use them later to read the wordlist and model and apply them to new documents that RapidMiner hasn't seen before. It correctly labels 11 of the 12 documents.



Files from the video.

Saturday, August 27, 2011

RapidMiner ETL - Transforming Attributes with Functions

In this video I show how to transform features in RapidMiner using operators such as log, sqrt, absolute value, and multiplying columns.

RapidMiner ETL - Normalizing, Discretizing, Recoding

In this video I show how to normalize an attribute, including z-normalization, how to discretize a column, and how to recode values


Thursday, August 25, 2011

And We're Back. A video series on ETL with RapidMiner

Back with some more videos! Sorry for the long wait, and thanks for your patience.

This series is on ETL: Extract, Transform, Load with Rapidminer.

The first video shows how to combine multiple datasets into one, by joining columns and appending rows.

The second videos is on sampling and selecting rows and attributes.

More videos coming soon.