Sid Som MBA, MIM

Sid has published a number of books on automated valuation modeling (AVM), technical assessments, public finance, restaurant analytics and pre-owned auto market modeling. While the PDF versions are available here, Kindle and Paperbacks are available on Amazon. His Homequant Blog is one of the most popular blogs on valuation analytics. He owns and operates a number of free valuation analytics sites – from his flagship Homequant to HomeYada to CondoYada to TownAnalyst to LocValu to JustAutoValue to SkylineValue, etc.
http://www.homequant.com/