cosine

Functions that returns the cosine similarity between two items or users.

Provides methods and functions to implement a Recommendation
System based on Collaborative Filtering Methodology.
See Aggarwal (2016) <doi:10.1007/978-3-319-29659-3> for an overview.

Jessica Kubrusly

CFilt

Recommendation by Collaborative Filtering

Thiago Lima

Lucas Oliveira

cosine function

<dl><dt>CF</dt>
<dd>A CF objec</dd>
<dt>type</dt>
<dd>"user" or "item"</dd>
<dt>i</dt>
<dd>"user" or "item" Id or index</dd>
<dt>j</dt>
<dd>"user" or "item" Id or index#'</dd></dl>

Arguments

Author

Similarity calculation Function — cosine

<dl>

<dt>CF</dt>
<dd>A CF objec</dd>


<dt>type</dt>
<dd>"user" or "item"</dd>


<dt>i</dt>
<dd>"user" or "item" Id or index</dd>


<dt>j</dt>
<dd>"user" or "item" Id or index#'</dd>

</dl>

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cosine: Similarity calculation Function

Description

Usage

Arguments

Author

Examples