2. The information processing apparatus according to claim 1 , the detection unit having a reference target detection unit for visiting reference targets designated by reference information included in the plurality of the texts to detect that the same information being reached by using two or more pieces of reference information; and the conversion unit having a reference conversion unit for replacing the two or more pieces of reference information with the same character string in response to an output from the reference detection unit.
2. The information processing apparatus according to claim 1 , the detection unit having a reference target detection unit for visiting reference targets designated by reference information included in the plurality of the texts to detect that the same information being reached by using two or more pieces of reference information; and the conversion unit having a reference conversion unit for replacing the two or more pieces of reference information with the same character string in response to an output from the reference detection unit. 4. The information processing apparatus according to claim 2 , the reference target conversion unit replacing reference target information with regular reference target information when reference target information indicating a regular reference target is included in information obtained by accessing the reference target designated by the reference target information.