| 摘要 |
When a user types in one or more characters from a restricted or ambiguous character set, such as numbers from a keypad, the characters in the restricted or ambiguous set are mapped to a larger set of characters, such as the alphabet. Then, the larger mapping set is used to search through keywords representing options available on a communications device, options available through the Internet, and possibly options available through paid placements. The set of options that are returned are then sorted based on past user behavior, on the context the device was in when the search was initiated, and optionally, on weightings given to selected keywords through paid placement.
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