Ratings Class Reference

Evaluation class for rating prediction. More...

List of all members.

Static Public Member Functions
static Dictionary< string, double >	Evaluate (IRatingPredictor recommender, IRatings ratings)
	Evaluates a rating predictor for RMSE, MAE, and NMAE.
static string	FormatResults (Dictionary< string, double > result)
	Format rating prediction results.
Properties
static ICollection< string >	Measures [get]
	the evaluation measures for rating prediction offered by the class

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Detailed Description

Evaluation class for rating prediction.

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Member Function Documentation

static Dictionary<string, double> Evaluate	(	IRatingPredictor	recommender,
		IRatings	ratings
	)			[inline, static]

Evaluates a rating predictor for RMSE, MAE, and NMAE.

See http://recsyswiki.com/wiki/Root_mean_square_error and http://recsyswiki.com/wiki/Mean_absolute_error

For NMAE, see "Eigentaste: A Constant Time Collaborative Filtering Algorithm" by Goldberg et al.

Parameters:

	recommender	rating predictor
	ratings	Test cases

Returns:

a Dictionary containing the evaluation results

static string FormatResults

(

Dictionary< string, double >

result

)

[inline, static]

Format rating prediction results.

See http://recsyswiki.com/wiki/Root_mean_square_error and http://recsyswiki.com/wiki/Mean_absolute_error

Parameters:

result

the result dictionary

Returns:

a string containing the results

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Property Documentation

ICollection<string> Measures [static, get]

the evaluation measures for rating prediction offered by the class

See http://recsyswiki.com/wiki/Root_mean_square_error and http://recsyswiki.com/wiki/Mean_absolute_error

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The documentation for this class was generated from the following file:

• Eval/Ratings.cs