45. A non-transitory computer-readable medium comprising program instructions for performing the steps of: receiving a specification of a class network having a class, wherein a membership function defines a likelihood that an object of a data network belongs to the class; receiving a specification of a link type that defines a relation between the class and the object; receiving a specification of a process step having a domain and an algorithm, wherein the domain designates the class, and wherein the process step is part of a process hierarchy; acquiring table data values; and performing process steps of the process hierarchy to generate the data network, wherein the data network is generated by generating the object of the data network and by selectively linking selected table data values to the object according to the class network and the process hierarchy.
45. A non-transitory computer-readable medium comprising program instructions for performing the steps of: receiving a specification of a class network having a class, wherein a membership function defines a likelihood that an object of a data network belongs to the class; receiving a specification of a link type that defines a relation between the class and the object; receiving a specification of a process step having a domain and an algorithm, wherein the domain designates the class, and wherein the process step is part of a process hierarchy; acquiring table data values; and performing process steps of the process hierarchy to generate the data network, wherein the data network is generated by generating the object of the data network and by selectively linking selected table data values to the object according to the class network and the process hierarchy. 48. The computer-readable medium of claim 45 , wherein a first plurality of the table data values are spectral intensity values of a digital image, and wherein a second plurality of the table data values are items of metadata relating to the digital image.