In linguistics, coreference occurs when multiple expressions in a sentence have the same referent. Linguistics is the scientific study of Language, encompassing a number of sub-fields In general a reference is a relation between objects in which one object designates by linking to another object
For example, in the sentence "You said you would help me", the two instances of the word you are most likely referring to the same person or group, in which case they are coreferent. In Linguistics, a sentence is a grammatical unit of one or more words bearing minimal syntactic relation to the words that precede or follow it often preceded and followed Similarly, in "I saw Scott yesterday. He was fishing by the lake," Scott and he are most likely coreferent.
In computational linguistics, coreference resolution is a well-studied problem in discourse. Computational linguistics is an Interdisciplinary field dealing with the statistical and/or rule-based modeling of Natural language from a computational Discourse (L discursus, "running to and from" means either "written or spoken communication or debate" or "a formal discussion