Structured t Unstructured data Motivation matching offers to specifications with high precision Product specifications are structured: set of (name value pairs Product offers are terse, unstructured text Attribute Name Attribute Value Panasonic Lumix DMc-FX07 digital camera category digital camera 7.2 megapixeL, 2.5", 3.6x, LCD monitor brand Panasonic product line Panasonic lumix Panasonic DMc-FX07EB digital model DMC-FXO7 camera silver resolution 7 megamI sIlver Lumix FⅩ07EB-S,7.2MPStructured + Unstructured Data  Motivation: matching offers to specifications with high precision – Product specifications are structured: set of (name, value) pairs – Product offers are terse, unstructured text 14 Panasonic Lumix DMC-FX07 digital camera 7.2 megapixel, 2.5”, 3.6x , LCD monitor Panasonic DMC-FX07EB digital camera silver Lumix FX07EB-S, 7.2MP Attribute Name Attribute Value category digital camera brand Panasonic product line Panasonic Lumix model DMC-FX07 resolution 7 megapixel color silver