Description
This algorithm can be used to extract the weighted documentdocument network for an ISI database. This is an undirected, weighted network.
Menu Path
Extract > From ISI Database > Extract Weighted DocumentDocument Network
Input Parameters
Threshold
Any documentdocument edge whose calculated similarity is below this value will not be given an edge in the network output by this algorithm.
Comparison Algorithm
The comparison algorithm is used to calculate the similarity between documents. You may select between the following algorithms:
Name 
Link to More Information 

JaccardCoefficient 

CosineSimilarity 

SÃ¸rensenSimilarityIndex 
Output
A network file with all documents connected by a weighted edge as calculated by the comparison algorithm if the weight of the was above the threshold value.
Usage Hints
The Cosine Similarity comparison algorithm does not preform any real comparison between the terms. It only uses the existence or nonexistence of a term in the set for the calculation.
Implementation Details
The Cosine Similarity comparison algorithm does not preform any real comparison between the terms. It only uses the existence or nonexistence of a term in the set for the calculation.
The network file has the following node and edge properties: