Systems and methods to identify values for a selected filter

A method comprising:

• receiving a selection, over a network from a client machine, the selection identifying a filter from a first plurality of filters, the filter including a first attribute-value pair, the first attribute-value pair including a first attribute and a first value, the first attribute-value pair being included in a concept query that was extracted from a query including at least one keyword that was received over the network from the client machine;
• identifying a second plurality of filters responsive to receiving the selection, the identifying the second plurality of filters being based on the first attribute and probabilities describing occurrences of attribute-value pairs in a plurality of listings respectively describing items that were previously transacted on a network-based marketplace, the second plurality of filters including a plurality of values, the identifying performed by a hardware processor;
• generating a user interface including the plurality of values and search results that are identified based on the concept query;
• and
• communicating the user interface, over the network, to the client machine.

A machine-readable hardware storage device storing a set of instructions that, when executed by a processor of a machine, cause the machine to perform operations comprising:

• receiving a selection, over a network from a client machine, the selection identifying a filter from a first plurality of filters, the filter including a first attribute-value pair, the first attribute-value pair including a first attribute and a first value, the first attribute-value pair being included in a concept query that was extracted from a query including at least one keyword that was received over the network from the client machine;
• identifying a second plurality of filters responsive to receiving the selection, the identifying the second plurality of filters being based on the first attribute and probabilities describing occurrences of attribute-value pairs in a plurality of listings that respectively describe items that were previously transacted on a network-based marketplace, the second plurality of filters including a plurality of values;
• generating a user interface including the plurality of values and search results that are identified based on the concept query;
• and
• communicating the user interface, over the network, to the client machine.