1. A system comprising: a memory to store a plurality of comments, the plurality of comments respectively comprising an overall rating of an entity and at least one phrase, the at least one phrase comprising a head term and a modifier associated with the head term; and one or more processors to implement: an aspect module to map respective head terms of a portion of the plurality of comments to an aspect cluster corresponding to an attribute of the entity, and a rating module to determine an aspect rating corresponding to the attribute of the entity based on the respective overall rating of the portion of the plurality of comments, and a module to cause presentation, on a client machine, of a graphical representation of the determined aspect rating corresponding to the attribute of the entity.
1. A system comprising: a memory to store a plurality of comments, the plurality of comments respectively comprising an overall rating of an entity and at least one phrase, the at least one phrase comprising a head term and a modifier associated with the head term; and one or more processors to implement: an aspect module to map respective head terms of a portion of the plurality of comments to an aspect cluster corresponding to an attribute of the entity, and a rating module to determine an aspect rating corresponding to the attribute of the entity based on the respective overall rating of the portion of the plurality of comments, and a module to cause presentation, on a client machine, of a graphical representation of the determined aspect rating corresponding to the attribute of the entity. 7. The system of claim 1 , wherein the aspect module further comprises an aspect estimator to incorporate a topic model corresponding to the aspect cluster.