Significant amounts of information available today contain references to places on earth.
Traditionally such information has been held as structured data and was the concern of …

Traditional search engines return ranked lists of search results. It is up to the user to scroll
this list, scan within different documents, and assemble information that fulfill his/her …

The conventional Internet is acquiring a geo-spatial dimension. Web documents are being
geo-tagged, and geo-referenced objects such as points of interest are being associated with …

Geo-textual indices play an important role in spatial keyword querying. The existing geo-
textual indices have not been compared systematically under the same experimental …

Many applications require finding objects closest to a specified location that contains a set of
keywords. For example, online yellow pages allow users to specify an address and a set of …

Geographic web search engines allow users to constrain and order search results in an
intuitive manner by focusing a query on a particular geographic region. Geographic search …

With advances in geo-positioning technologies and geo-location services, there are a
rapidly growing amount of spatio-textual objects collected in many applications such as …

Location-based information contained in publicly available GIS databases is invaluable for
many applications such as disaster response, national infrastructure protection, crime …

Spatial keyword search has been playing an indispensable role in personalized route
recommendation and geo-textual information retrieval. In this light, we conduct a survey on …

Geographical information is recorded in a wide variety of media and document types. There
are innumerable paper-based books, reports, images and maps, and there are computer …