This documentation refers to the database version of 'Extract Document Co-Citation'. There is also a non-database version of the same algorithm that I don't believe is currently documented anywhere. The concept is the same but the details are different.
Description
Extracts the document co-citation network from an ISI database.
Each document and each referenced document in the input database is represented by a node. An edge is drawn between the nodes for two documents if and only if they were cited by a common document in your dataset.
Core Document vs. Non-Core Document
There is a distinction drawn between documents contained in your dataset and documents in general. A document in your dataset is called a "core document". Your documents may (and probably do) reference non-core documents.
The output network of this algorithm will contain nodes representing even non-core documents.
Analyses
The output network will include the following summaries of your dataset:
- Node (Document)
- A prettified label for identifying this document.
- A prettified string giving the journal (or other source) of this document (called 'source').
- Edge (Co-Citation)
- The number of documents in your dataset or referenced in your dataset which cited both of these documents.
- Publication year of the earliest co-citing document.
- Publication year of the most recent co-citing document.
Usage Hints
Load a dataset into the tool, then extract the paper-citation network and execute this algorithm.