Query suggestion aims to suggest relevant queries for a
given query, which help users to specify their information
needs better [11]. It is closely related to query expansion but
the query suggestion aims to suggest full queries that have
been formulated by users in another language. Reference
[11] proposed query suggestion by mining relevant queries in
different languages from up-to-date query logs as it is
expected that for most user queries, we can find common
formulations on these topics in the query log in the target
language. Therefore, cross-lingual query suggestion also
plays a role of adapting the original query formulation to the
common formulations of similar topics in the target
language. Used as a query translation system, the proposed
method demonstrates higher effectiveness than traditional
query translation methods using either bilingual dictionary or
machine translation tools.