The advances in location-acquisition and mobile computing techniques have generated
massive spatial trajectory data, which represent the mobility of a diversity of moving objects …

Uncertainty accompanies our life processes and covers almost all fields of scientific studies.
Two general categories of uncertainty, namely, aleatory uncertainty and epistemic …

Reverse skyline queries over uncertain databases have many important applications such
as sensor data monitoring and business planning. Due to the existence of uncertainty in …

The continuous development of wireless networks and mobile devices has motivated an
intense research in mobile data services. Some of these services provide the user with …

We present two new neighbor query algorithms, including range query (RNN) and nearest
neighbor (NN) query, based on revised kd tree by using two techniques. The first technique …

When dealing with massive quantities of data, top-k queries are a powerful technique for
returning only the k most relevant tuples for inspection, based on a scoring function. The …

Uncertain data have already widely existed in many practical applications recently, such as
sensor networks, RFID networks, location-based services, and mobile object management …

Location-based services (LBS) have been widely accepted by mobile users. Many LBS
users have direction-aware search requirement that answers must be in the search …

The dramatic growth in the number of application domains that naturally generate
probabilistic, uncertain data has resulted in a need for efficiently supporting complex …

Uncertainty pervades many domains in our lives. Current real-life applications, eg, location
tracking using GPS devices or cell phones, multimedia feature extraction, and sensor data …