Google Scholar's Principal Engineer Compares ISI Web of Science and Google Scholar

Anurag Acharya is Google Scholar's Principal Engineer. After Dr. Pauly's article Web of Science vs. Google Scholar was debated on blogs/listservs, Anurag was asked three questions:

1. Is the Google Scholar index the same searchable index, regardless of location?

Anurag: It is the same index and the same ranking [regardless of location].

2. Have you tested Google Scholar's performance from various geographic points globally? Are you aware of any country to country variations due to specific network issues [preventing it from performing similarly]?

Anurag: I don't know of any filtering at the network level. The index at our end is the same.

3. How often does GS change? daily? monthly?

Anurag: We cannot share update information, but our long-term goal is to update every day.

Please note: Full text and comments by Dean Giustini are available at this post primary socurce: UBC Google Scholar blog