I am an Computer Science undergraduate student and I am looking for my potential mentor for my PhD study. I guess besides research interest, personality etc., h-index is an important factor one should consider. So I wonder whether there is a way to find out about the precise h-index of an arbitral author.
I've been using Microsoft Academic Search. It's cool, it often finds the right person and gives you his/her h-index. However, I believe that this tool has underestimated the h-index of many researchers. (I think so because I've tried typing in some very famous professors' names and the h-index that Microsoft gives is about 10~20 lower than the actually value).
Moreover, since I am mostly interested in Human-Computer Interaction so I am also referring to ACM SIGCHI's Most Frequent Authors Page. The page is awesome: it gives you the most brilliant professors ranked by their number of publications. However, I think h-index is a better metric than the number of publications alone.
I could, of course, go to the professors' websites and read their publication list. But I want to know whether there is a better, more efficient way of finding h-index.