Method and apparatus for generating a keyword list from tables to facilitate searching an electronic catalog

Claim 2

A computer-implemented method for searching for items in an electronic catalog, said method comprising the steps: (a) providing a catalog category table comprising a plurality of entries, each entry containing a category name along with information defining a position within a hierarchical structure of categories; (b) providing a product table comprising a plurality of entries, each entry containing an identifier for a particular item in said electronic catalog along with a pointer referencing an entry in said catalog category table, thereby associating each item in the electronic catalog with one of said categories; (c) searching the catalog category table to find words that appear in the category names, and generating a category words array comprising a list of said words along with pointers referencing respective entries in said catalog category table, thereby associating each of said words at any level of the hierarchy with at least one of said categories; (d) displaying the list of words to a user, and allowing a user to select a word from the list; and (e) displaying a list of items from said electronic catalog to the user.

Claim 3

A method according to claim 1 wherein the step of generating the category words array includes replacing predetermined words with generalised versions of those words.

Claim 4

A method according to claim 1 wherein the category words array is re-generated for each new session initiated by a user.

Claim 5

A method according to claim 1 further including storing a table specifying which items each user is permitted to order, and wherein the step of generating the list of words includes selecting only words appearing in category names corresponding to items that a current user is permitted to order.

Claim 6

A computer system for searching for items in an electronic catalog, said computer system comprising: (a) a catalog category table comprising a plurality of entries, each entry containing a category name along with information defining a position within a hierarchical structure of categories; (b) a product table comprising a plurality of entries, each entry containing an identifier for a particular item in said electronic catalog along with a pointer referencing an entry in said catalog category table, thereby associating each item in the electronic catalog with one of said categories; (c) means for searching the catalog category table to find words that appear in the category names, and for generating a category words array comprising a list of said words along with pointers referencing respective entries in said catalog category table, thereby associating each of said words at any level of the hierarchy with at least one of said categories; (d) means for displaying the list of words to a user, and allowing a user to select a word from the list; and (e) means for displaying a list of items from said electronic catalog to the user.

Claim 7

A computer system for searching for items in an electronic catalog, said computer system comprising: (a) a catalog category table comprising a plurality of entries, each entry containing a category name along with information defining a position within a hierarchical structure of categories; (b) a product table comprising a plurality of entries, each entry containing an identifier for a particular item in said electronic catalog along with a pointer referencing an entry in said catalog category table, thereby associating each item in the electronic catalog with one of said categories; (c) means for searching the catalog category table to find words that appear in the category names, and for generating a category words array comprising a list of said words along with pointers referencing respective entries in said catalog category table, thereby associating each of said words at any level of the hierarchy with at least one of said categories; (d) means for displaying the list of words to a user, and allowing a user to select a word from the list; and (e) means for displaying a list of items from said electronic catalog to the user.

Claim 8

A computer system according to claim 5 including means for replacing predetermined words in said category words array with generalised versions of those words.

Claim 9

A computer system according to claim 5 wherein the category words array is re-generated for each new session initiated by a user.

Claim 10

A computer system according to claim 7 further including means for storing a table specifying which item each user in permitted to order, and wherein the for generating the list of words includes means for selecting only words appearing in category names corresponding to item that a current user is permitted to order.