High-Throughput and Language-Agnostic Entity Disambiguation and Linking on User Generated Data
Table 4: Comparison of Lithium EDL and Google Cloud NL API
['[EMPTY]', '[BOLD] Lithium', '[BOLD] OpenCalais']
An entity from Google NL is considered to be disambiguated if it was associated with a Wikipedia link. Column Both shows the numbers of entities that were disambiguated by both systems. Most entities disambiguated by Google NL were also disambiguated by our system. In addition, our system disambiguated several more entities. Based on the the precision of our system, we can estimate that at least 6080 disambiguated entities from our system are correct. This implies that Google NL missed more than 2600 entities that were correctly disambiguated by our system. Thus, our system correctly disambiguated at least 75% more entities than Google NL. Every entity from OpenCalais API is considered to be disambiguated. However, since OpenCalais entity does not link the disambiguated entities to Wikipedia or Freebase but to their own proprietary KB, we cannot determine which entities were discovered by both the systems. Nevertheless, based on the precision of our system, at least 3500 entities that were correctly disambiguated by our system, were missed by OpenCalais, which is significantly more than the number of entities they detected.