Information provided in Offer-2 is largely a subset of
what is provided in Offer-1. This offer provides the values
of category and brand, but the value of the model
has an extra suffix. It additionally provides the value
of the color attribute.
• Offer-3 is even more interesting. It provides part of
the value of the product line (Lumix) and a somewhat
different value for sensor resolution (7.2 MP vs.
7 megapixel) as well as model (FX07EB-S vs. DMCFX07).
It neither provides category nor brand information.
• With respect to Offer-3, note further that Panasonic
also makes other 7.2 megapixel Lumix digital cameras
(e.g., DMC-TZ3K, DMC-LZ6, and DMC-FX12).
Moreover, there is also a field controller product with
model number FX07.
Clearly, we have on our hands a hard problem of matching
unstructured textual descriptions of products to structured
records for which it is desirable to have algorithmic solution.