Cosine Delta
Definition
A variant of Burrows's Delta that uses cosine similarity instead of Manhattan distance. Research by Argamon and later Eder has shown it often outperforms the original Delta on shorter texts and noisy corpora.
Related terms
- Burrows's Delta
- A distance metric introduced by John Burrows in 2002 that measures how far a text's standardised word-frequency profile deviates from the mean...
- Closed-corpus trap
- The error of validating a stylometric method exclusively on texts from authors whose profiles were used to build the model, inflating apparent...
- Cross-validation
- A validation strategy that repeatedly partitions a labelled corpus into training and test subsets to estimate the method's error rate on unseen...
- Principal component analysis (PCA)
- A multivariate statistical method used in fire debris research to reduce chromatographic data matrices to principal components that capture major variance. Used...
- Rolling Delta
- Application of the Delta metric to a moving window of text, producing a curve showing how stylistic similarity to each candidate changes...
Explained in
- Stylometry and Statistical Distance MethodsA variant of Burrows's Delta that uses cosine similarity instead of Manhattan distance. Research by Argamon and later Eder has shown it often outperforms the o...