Matching pipeline for a communication system

A system comprising:

• a memory;
• and
• a processing device, operatively coupled to the memory, to:
• identify a first group of user objects that are absent from a first user path comprising a first edge and a first subsequent node, the first subsequent node comprising a condition block indicating whether a respective user object advances within the first user path from the first subsequent node along the first edge;
• locate active checkpoints within other user paths with each active checkpoint having a user object associated therewith;
• generating a second group of the user objects associated with the active checkpoints from the other user paths;
• performing a negative match to:
• identify a first user object from the first group and a second user object from the second group;
• and
• prevent the first user object and the second user object from entering the first user path.

A non-transitory computer-readable medium storing instructions that, when executed by a processing device, cause the processing device to:

• identify a first group of user objects that are absent from a first user path comprising a first edge and a first subsequent node, the first subsequent node comprising a condition block indicating whether a respective user object advances within the first user path from the first subsequent node along the first edge;
• locate active checkpoints within other user paths with each active checkpoint having a user object associated therewith;
• generate a second group of the user objects associated with the active checkpoints from the other user paths;
• perform a negative match to:
• identify a first user object from the first group and a second user object from the second group;
• and
• prevent the first user object and the second user object from entering the first user path.