Multiple Synthesis: Deeper Subject Analysis
M. P. Satija, Alex Kyrios · 2023
Introduction In previous chapters, we discussed and illustrated the number-building processes, including those that use notation from the schedules and tables simultaneously. That is a mild sort of what may be termed multiple synthesis. Multi-topical or multi-aspect subjects, such as ‘cataloging of palm-leaf manuscripts’, may be termed as complex subjects. Equipped with many devices for number building, the DDC can accommodate many such multifaceted subjects in a single class number. Although the system is neither totally faceted nor does it allow for unlimited synthesis, many facets of a micro-subject can still be expressed through number building. Especially since the 18th Edition, provisions for the synthesis of numbers have been increasing. Since then, each new edition has made provision for the addition of more and more facets. The use of internal tables further aids the process of multiple synthesis. The first step is to identify the correct base number. This sets us on the right path – often a long path, if we intend multiple synthesis. Beyond this, the citation order of facets is by default determined by the instructions. In a complex subject, many aspects may seem equal contenders for the base number. The choice of the right one will depend upon the classifier's knowledge of the structure of DDC and their perception of the facets of primary, secondary and tertiary importance. This is a somewhat elusive skill which improves constantly with practice; at times, however, it may require intuition. One simple test is that the right base number should have an add instruction, except of course for cases in which a standard subdivision is all that is needed. When building numbers, one must proceed slowly and make sure to follow instructions carefully. At times, it may be necessary to move forward and backward between different parts of the schedules and tables. Once a number is built, the schedules should be checked again to ensure that the resulting number does not conflict with any number or instruction in the schedules. Examples of multiple synthesis Let us first look at some simpler examples of multiple synthesis: E-mail business companies in the USA 384.34 + 380:065 + T2–73 = 384.3406573 Islamic schools in Indonesia 371.072–371.079 + 297 + T1–093–099 + T2–598 = 371.07709598 We can break down the second example by facets, using slashes: 371.07/7/09/598.