1. About AdvaS
2. Installation Guide
3. Usage Of AdvaS
4. Class AdvancedSearch
5. Class Advas
6. Class AdvasIo
7. Class Descriptors
 -  7.1 __init__
 -  7.2 addDescriptor
 -  7.3 countDescriptors
 -  7.4 decreaseDescriptor
 -  7.5 getDescriptorList
 -  7.6 getDescriptorListValues
 -  7.7 getDescriptorPair
 -  7.8 getDescriptorValue
 -  7.9 increaseDescriptor
 -  7.10 removeDescriptor
 -  7.11 updateDescriptor
8. Class Entry
9. Class Ngram
10. Class Phonetics
11. Class Stemmer
12. Information Retrieval Resources
13. Documentation
 
 decreaseDescriptor
 
decreaseDescriptor (self, descriptor, value)

Added to advas-0.2.5

Decreases the value of the named descriptor from the descriptor list.

In: entry name of the descriptor to be changed
  value value the descriptor shall be decreased by.

Out:   True in case the given descriptor name exists in the descriptor list, otherwise False.