Graphical user interface for filtering items of interest

A method, comprising:

• storing, by one or more servers, a library of available filtering criteria to construct a computer-aided design (CAD) filter for filtering a plurality of items, each filtering criterion in the library having a graphical representation;
• transmitting, by the one or more servers to a client device, the available filtering criteria of the library, a first multi-tier CAD filter including selected filtering criteria of the library, and a first filtered set of the plurality of items filtered based on the selected filtering criteria;
• receiving, by the one or more servers from the client device, a selection of a first filtering criterion of the available filtering criteria;
• identifying, by the one or more servers, a first tier of the first multi-tier CAD filter in which to include the first filtering criterion;
• constructing, by the one or more servers, a query based on the first multi-tier CAD filter including the first filtering criterion in the first tier;
• executing, by the one or more servers, the query with respect to the plurality of items to identify a second filtered set of the plurality of items;
• and
• transmitting, by the one or more servers to the client device, the available criteria excluding the first filtering criterion, a second multi-tier CAD filter including the selected filtering criteria of the library and the first filtering criterion, and the second filtered set of the plurality of items.

A computer-readable medium having no transitory signals and storing instructions that, when executed by at least one hardware-based processor, cause the at least one hardware-based processor to perform operations comprising:

• storing, on a client device, a library of available filtering criteria to construct a computer-aided design (CAD) filter for filtering a plurality of items, each filtering criterion in the library having a graphical representation;
• presenting, on a display screen of the client device, the available filtering criteria of the library, a first multi-tier CAD filter including selected criteria of the library, and a first filtered set of the plurality of items filtered based on the selected criteria;
• receiving, by the client device, a selection of a first filtering criterion of the available filtering criteria;
• identifying, by the client device, a first tier of the first multi-tier CAD filter in which to include the first filtering criterion;
• constructing, by the client device, a query based on the first multi-tier CAD filter including the first filtering criterion in the first tier;
• executing, by the client device, the query with respect to the plurality of items to identify a second filtered set of the plurality of items;
• and
• presenting, on a display screen of the client device, the available criteria excluding the first filtering criterion, a second multi-tier CAD filter including the selected criteria of the library and the first filtering criterion, and the second filtered set of the plurality of items.