Yatharthanubhava (यथार्थानुभवः) is of four types, pratyaksa, anumana, upamana, and sabda.

Pratyksa is divided into two, nirvikalpaka and savikalpaka.

Anumana is divided into two, svartha and parartha. (अनुमानं द्विविधम्-स्वार्थं परार्थं च)