Non-negative matrix analysis for effective feature extraction in X-ray spectromicroscopy
نویسندگان
چکیده
منابع مشابه
Non-negative matrix analysis for effective feature extraction in X-ray spectromicroscopy.
X-Ray absorption spectromicroscopy provides rich information on the chemical organization of materials down to the nanoscale. However, interpretation of this information in studies of "natural" materials such as biological or environmental science specimens can be complicated by the complex mixtures of spectroscopically complicated materials present. We describe here the shortcomings that somet...
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In x-ray spectromicroscopy, a set of images can be acquired across an absorption edge to reveal chemical speciation. We previously described the use of non-negative matrix approximation methods for improved classification and analysis of these types of data. We present here an approach to find appropriate values of regularization parameters for this optimization approach.
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ژورنال
عنوان ژورنال: Faraday Discuss.
سال: 2014
ISSN: 1359-6640,1364-5498
DOI: 10.1039/c4fd00023d