Automatically identifying risk in contract negotiations using graphical time curves of contract history and divergence

In one embodiment, a method includes storing digital data representing a contract set of contract documents, storing digital contract metadata identifying data fields and associated data types with respectively assigned weights in each contract document, identifying and weighting differences between data field values, calculating distance scores based on the weighted differences, generating and causing displaying a time curve graph based on the distance scores and a temporal ordering of the contract documents, the time curve graph including a geometric shape that graphically indicates time curves and a spatial proximity between the contract documents, performing a digital geometric analysis of the time curve graph to identify whether the geometric shape indicates a lack of convergence over a threshold amount of time, in response to determining that the geometric shape indicates the lack of convergence, generating and causing displaying a notification indicating that the contract set is at risk.