Categorizing relationships between research articles When a research article X cites another article Y, it could be because of any of the following: 


X develops the ideas of Y
the ideas presented in X bear a degree of resemblance to those of Y
X compares its results to those of Y 
etc. 


When I study the literature in my research area, I would like to categorize the relationships between papers in a way similar to the above example. However, I would prefer to use an existing categorization that people have thought through instead of inventing a wheel. I performed a few searches, but have not discovered any such categorization. Do such categorizations exist? I would appreciate some pointers.
CiTO is a "Citation Typing Ontology" which enables RDF-type assertions differentiating (just to name the Ps):


  parodies, plagiarizes, provides assertion for, provides conclusions for, provides data for, provides excerpt for, provides method for, provides quotation for