Search results for "rapidminer"

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Shaily

Joined: Friday 23 July 2010 15:53:32 (UTC)

Last active:Wednesday 23 February 2011 12:19:29 (UTC)

Email (public):shaily_reading_uk [at] yahoo.com

Field/Industry:Data Mining | Occupation/Role(s):Head, Data Mining, Woolworths

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Lawrynka

Joined: Sunday 13 June 2010 22:10:46 (UTC)

Last active:Monday 05 March 2012 21:37:49 (UTC)

Field/Industry:Computer Science | Occupation/Role(s):Assistant Professor

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Simon Jupp

Joined: Saturday 21 July 2007 12:34:16 (UTC)

Last active:Wednesday 11 January 2012 14:32:21 (UTC)

Website:http://www.cs.man.ac.uk/~sjupp | Email (public):simon.jupp [at] manchester.ac.uk

Semantic clustering with k-Medoids and ALC... (1)

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 This workflow loads data from a configuration file for DL-Learner (http://dl-learner.org) and uses ALCN Semantic Kernel [1] to cluster those data with k-Medoids algorithm. [1] N. Fanizzi, C. d’Amato, F. Esposito. Learning with Kernels in Description Logics. ILP 2008  

Created: 2012-05-30 | Last updated: 2012-06-07

Evaluating Multiple Models with Looped X-V... (1)

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This process shows how multiple different models can be evaluated with cross validation runs. This allows for the comparison of, for example, three prediction model types (e.g., ANN, SVM and DT) all at once under a x-fold cross validation. Having said that, the process actually performs the same cross validation several times using each time a different modeling scheme. It makes use of loops, collections, subprocess selection and macros and is therefore also an interesting showcase for more ...

Created: 2010-05-15

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Sebastian Loh

Joined: Monday 03 May 2010 08:59:17 (UTC)

Last active:Tuesday 07 June 2011 15:28:47 (UTC)

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Matko Bošnjak

Joined: Wednesday 09 March 2011 15:07:50 (UTC)

Last active:Saturday 12 April 2014 17:13:31 (UTC)

Website:http://matko.info/

Pivoting with Consideration of Example Wei... (1)

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This process shows how the Pivoting operator can also consider example weights encoded by a special attribute with the role 'weight'. The first operators only create a demo data set for this purpose, the actual pivoting is performed by the last operator only. I recommend to place a breakpoint before the Pivoting and check the data (structure) in order to see how the Pivoting handles the weights.

Created: 2010-07-07

Find and replace missing values with other... (1)

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Sometimes, it is helpful to replace a numerical attribute containing a missing value with a value from another attribute in the example row rather than using a constant such as an average or maximum value. This process generates some missing values, detects them and replaces with a calculation based on the value of another attribute. (Purists will be alarmed at the mathematical impossibility of taking the square root of a negative number). The process detects missing values by subtracti...

Created: 2010-08-25 | Last updated: 2010-08-25

Cross tabulation via aggregation and pivoting (1)

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Creates a contingency table using the Aggregate and Pivot operators.

Created: 2010-08-25 | Last updated: 2010-08-25