The Bray-Curtis similarity index remains misidentified: Reply to Somerfield (2008)

Identification of the Bray-Curtis similarity index: Comment on Yoshioka (2008)

In a recent As I See It, Yoshioka (2008, Mar Ecol Prog Ser 368:309–310) stated that the term Bray-Curtis should only be used for doubly-standardised data, and when data counts are used to calculate similarity, the term Czekanowski is correct; by using the wrong name, it is claimed, marine ecologists demonstrate a lack of knowledge and introduce confusion. This needs to be rectified. It is incor...

Reply to Lawrence and Bailey (2008)

Lawrence and Bailey (2008) were critical of our inclusion of scales that were said to be ‘‘unrelated to autogynephilia’’ in our cluster analysis to classify transsexual participants into two groups. These scales, Attraction to Transgender Fiction and Attraction to Feminine Males, were included because in the taxometric analysis performed by Veale, Lomax, and Clarke (2007) these scales were able...

The Similarity Index

Is it possible to calculate a hash value for a document that captures its salient characteristics, such that a repository can be queried for like values and retrieve all “similar” documents? If so, similar documents could be easily identified by a simple SQL query without the need for a full text search engine. Such a value would allow systems to quickly identify duplicate or similar content be...

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