1. A recommendation device including:
a product selecting unit for extracting a candidate for 5 recommended product that is to be presented to a target user on a basis of browsing information indicating information about the user's browsing of a product, and unpurchased product information indicating information about a product that the user has indicated an intention to purchase; and 10 a specification correlation calculating unit for extracting a product having a product specification correlated with a product specification of the candidate for recommended product, and extracting the extracted product as a recommended product.
1 ij
2. The recommendation device according to claim 1, wherein
the product selecting unit acquires information about one
or more owned products of the target user on a basis of owned product information indicating information about the products owned by the user, and
when extracting a recommended product that is a target for replacement of an owned product of the target user, the specification correlation calculating unit extracts a product having a product specification correlated with a product 25 specification to be maintained, out of product specifications of the owned product.
3. The recommendation device according to claim 2, wherein
the specification correlation calculating unit extracts
30 a product having a product specification correlated with a

product specification to be improved, out of the product specifications of the owned product.
4. The recommendation device according to claim 1, wherein
5 the product selecting unit acquires information about one
or more owned products of the target user on a basis of owned product information indicating information about the products owned by the user, and
when extracting a recommended product for compensating
10 for lack of the owned products of the target user, the specification correlation calculating unit compares a product group indicating a combination of products and the owned products and extracts, as a lacking product, a product that is not included in the product group, and also determines a product
15 specification of the lacking product from product specifications of the owned products and extracts a product matching the product specification.
5. The recommendation device according to claim 1, wherein
20 the product selecting unit acquires information about one
or more owned products of the target user on a basis of owned product information indicating information about the products owned by the user, and
when extracting a recommended product that is a target
25 for replacement of an owned product of the target user, the specification correlation calculating unit extracts a product having a product specification correlated with a product specification to be maintained, out of product specifications of the owned product, and
30 when extracting a recommended product for compensating

for lack of the owned products of the target user, the specification correlation calculating unit compares a product group indicating a combination of products and the owned products and extracts a lacking product, and also determines 5 a product specification of the lacking product from product specifications of the owned products and extracts a product matching the product specification.