I'm looking for a dataset containing:
- list of Indian last names
- list of Indian castes
- for each last name, the probability to belongs to each caste.
Since the caste system has been officially banned, there have changes in Indian society that seem to complicate a straightforward connection between caste and last name. Some of those changes include people choosing to change their last name, inclusion of other cultural norms in naming, and mobility within society.
However, there is still data available, but you might need to merge several datasets and sources together to achieve what you are looking for. There is a strong relation between region, caste, and name, and so sorting by region should give you better insights. The following might be helpful:
These guidelines may be helpful in looking at the structure of Indic name data sources.