2. The method of claim 1 , wherein establishing a plurality of sequences of search queries comprises: adding a first search query associated with a first user to a first sequence; determining whether to add a second search query associated with the first user to the first sequence based on a similarity between the second search query and at least the first search query of the first sequence; adding the second search query to the first sequence in response to determining the similarity between the second search query and at least the first search query of the first sequence exceeds a similarity threshold; and adding the second query to a second sequence in response to determining the similarity between the second search query and at least the first search query of the first sequence does not exceed the similarity threshold.
2. The method of claim 1 , wherein establishing a plurality of sequences of search queries comprises: adding a first search query associated with a first user to a first sequence; determining whether to add a second search query associated with the first user to the first sequence based on a similarity between the second search query and at least the first search query of the first sequence; adding the second search query to the first sequence in response to determining the similarity between the second search query and at least the first search query of the first sequence exceeds a similarity threshold; and adding the second query to a second sequence in response to determining the similarity between the second search query and at least the first search query of the first sequence does not exceed the similarity threshold. 3. The method of claim 2 , wherein determining a similarity between the second search query and at least the first search query of the first sequence is based on at least one of: an edit distance between the second search query and at least the first search query of the first sequence; a word edit distance between the second search query and at least the first search query of the first sequence; a difference between a time the second search query issued and the time that at least the first search query of the first sequence issued; whether there is a prefix overlap between the second search query and at least the first search query of the first sequence; whether there is a suffix overlap between the second search query and at least the first search query of the first sequence; a geographic location related to the second search query and at least the first search query of the first sequence; and a product brand associated with the second search query and at least the first search query of the first sequence.