Categorical dimensions of human odor descriptor space revealed by non-negative matrix factorization.
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ABSTRACT:
SUBMITTER: Castro JB
PROVIDER: S-EPMC3776812 | biostudies-literature | 2013
REPOSITORIES: biostudies-literature
Publications
Categorical dimensions of human odor descriptor space revealed by non-negative matrix factorization.
Castro Jason B JB Ramanathan Arvind A Chennubhotla Chakra S CS
PloS one 20130918 9
In contrast to most other sensory modalities, the basic perceptual dimensions of olfaction remain unclear. Here, we use non-negative matrix factorization (NMF)--a dimensionality reduction technique--to uncover structure in a panel of odor profiles, with each odor defined as a point in multi-dimensional descriptor space. The properties of NMF are favorable for the analysis of such lexical and perceptual data, and lead to a high-dimensional account of odor space. We further provide evidence that o ...[more]
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