摘要:

“Pattern recognition” is difficult to define because various terms have come to have different meanings to various groups. References to “pattern recognition,” “learning machines,” “machine decisions,” “artificial intelligence,” “empirical decision processes,” and other names are scattered throughout the literature. Different groups of users, such as electrical engineers, physical scientists, neurobiologists, linguists, and psychologists, have adopted different phrases and have attached their own intrepretations to them. Even in chemistry conflicts in usage occur, as evidenced by the early use of “pattern recognition” in mass spectrometry to mean the direct comparison of one mass spectrum to a library of standards as an attempt to identify compounds. Indeed, one might say that all attempts to correlate information in any form amount to the recognition of patterns that represent that information. The problem becomes one of restricting the definition so that it can have some useful connotation.

ISSN:0007-8980    

DOI:10.1080/10408347408542669

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor

摘要:

It is widely recognized that electron ionization (EI),* the most common of the methods of molecular ionization used in organic mass spectrometry, has deficiencies of various sorts. Its survival in the face of alternative methods has been facilitated by the even greater problems associated with these other methods, particularly concerning their sensitivity.

ISSN:0007-8980    

DOI:10.1080/10408347408542670

出版商:Taylor & Francis Group    

年代:1974

数据来源: Taylor