The systematic review search process identified 162 relevant articles published, with an
English abstract, in peer-reviewed journals since 1st
January 1958 until 29th
2008. A total of 3558 comparisons of content of nutrients and other substances in
organically and conventionally produced foodstuffs were extracted for analysis.
Details of included studies, livestock products analysed, laboratory methods and units of
measurement, and dot plots of results, are presented by nutrient category in Appendix 13.
Analyses excluded extreme outliers and graphically reported data (listed in Appendix 15).
Summary results of the analysis comparing the content of nutrients and other substances
from organically and conventionally produced livestock products are presented in Table 3
(results presented for all studies and for satisfactory quality studies separately). ...
This paper proposes a method to extract product features from user reviews and generate a review summary. This method only relies on product speciﬁcations, which usually are easy to obtain. Other resources like segmenter, POS tagger or parser are not required. At feature extraction stage, multiple speciﬁcations are clustered to extend the vocabulary of product features. Hierarchy structure information and unit of measurement information are mined from the speciﬁcation to improve the accuracy of feature extraction. ...