. . . . . . . . "1968-06-07"^^ . . . . . . . . . . . . . . . . . . . "Joseph M. Hellerstein"@en . . "Joseph M. Hellerstein"@en . . . . . . . . . . . . . "Joseph M. Hellerstein (born 7 June 1968) is an American professor of Computer Science at the University of California, Berkeley, where he works on database systems and computer networks. He co-founded Trifacta with Jeffrey Heer and Sean Kandel in 2012, which stemmed from their research project, Wrangler."@en . "Joseph M. Hellerstein (born 7 June 1968) is an American professor of Computer Science at the University of California, Berkeley, where he works on database systems and computer networks. He co-founded Trifacta with Jeffrey Heer and Sean Kandel in 2012, which stemmed from their research project, Wrangler."@en . . . . . . . . . . . . . . "1968-06-07"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "6497"^^ . . . . . . . "Joseph M. Hellerstein"@en . . . . . . "18909988"^^ . . . . . . . . . . . . . "1117948137"^^ . . . . .