Embodiments of a method and/or system for improving fragment assembly and/or sequence identification includes: collecting a sample including a set of nucleic acid components associated with a set of microorganisms; generating a set of tagged sequence fragments; amplifying the set of tagged sequence fragments and sequencing the set of tagged sequence fragments; based upon the set of identifier tags, generating a set of branched assemblies of candidate sequence fragments, wherein each of the set of branched assemblies includes a set of ordered nodes and a set of branches distributed across the set of nodes; implementing a threshold criterion to reduce the set of branched assemblies to a set of branch-reduced assemblies; and identifying a set of sequences corresponding to the set of branch-reduced assemblies and/or generating an analysis informative of the set of microorganisms associated with the sample.