Advances in Spatial and Temporal Databases: 7th - download pdf or read online

By Jianwen Su, Haiyan Xu, Oscar H. Ibarra (auth.), Christian S. Jensen, Markus Schneider, Bernhard Seeger, Vassilis J. Tsotras (eds.)

ISBN-10: 354042301X

ISBN-13: 9783540423010

The 7th overseas Symposium on Spatial and Temporal Databases (SSTD 2001), held in Redondo seashore, CA, united states, July 12{15, 2001, introduced jointly top researchers and builders within the zone of spatial, temporal, and spatio-temporal databases to debate the state-of-the-art in spatial and temporal info administration and functions, and to appreciate the demanding situations and - seek instructions within the advancing zone of knowledge administration for relocating gadgets. The symposium served as a discussion board for disseminating examine in spatial and temporal facts administration, and for maximizing the interchange of information between researchers from the confirmed spatial and temporal database com- nities. The trade of analysis principles and effects not just contributes to the tutorial area, but additionally bene ts the consumer and advertisement groups. SSTD 2001 was once the 7th within the sequence of symposia that begun in Santa Barbara a dozen years in the past and has considering been held each years, in Zurich, Singapore, Portland (Maine), Berlin, and Hong Kong. by way of 1999, the sequence had develop into good demonstrated because the optimal foreign discussion board committed exclusively to spatial database administration, and it used to be determined to increase the scope of the sequence to additionally hide temporal database administration. This prolonged scope was once selected due, partly, to the expanding significance of study that considers spatial and temporal features jointly.

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Read Online or Download Advances in Spatial and Temporal Databases: 7th International Symposium, SSTD 2001 Redondo Beach, CA, USA, July 12–15, 2001 Proceedings PDF

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Additional info for Advances in Spatial and Temporal Databases: 7th International Symposium, SSTD 2001 Redondo Beach, CA, USA, July 12–15, 2001 Proceedings

Example text

ALWAYS BETWEEN or B. SOMETIME BETWEEN). 1A: the condition is satisfied for object if every point on o's route between starttime and endtime is within route-distance s or route-travel-time t from R (observe that using the GDT map format one can compute both travel time and distance as different cost measures). Remember, route distance (route travel time) between two points is the distance (travel time) along the current trajectory, in the forward (increasing time) direction. 2A: the condition is satisfied for an object o if every point on o's route between starttime and endtime is within travel-time t or travel-distance s from R.

The refinement step is as follows. For each trajectory T of S we consider the trajectory segments that are "alive" between starttime and endtime. T is in the answer set if and only if at least one of them is within route-travel-time 5 minutes from R. (1As): ALONG EXISTING PATH/ ALWAYS BETWEEN) assuming that the cost 5 is given in terms of distance: The query is formulated as follows: Q 4: SELECT id FROM M_O WHERE id WITHIN 5 km FROM R ALONG EXISTING PATH ALWAYS BETWEEN starttime AND endtime We again use a filter and refinement approach to process this query.

Here distance means distance along the shortest path. 1B: the condition is satisfied for o if some point on o's trajectory between starttime and endtime is within route-distance s or route-travel-time t from R 2B: the condition is satisfied for o if some point on o's trajectory between starttime and endtime is within distance s or travel-time t from R. Here distance means distance along the shortest path. 2 Spatiotemporal Index We adopt a 3D spatiotemporal indexing scheme similar to the ones proposed in [18][10][16].

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Advances in Spatial and Temporal Databases: 7th International Symposium, SSTD 2001 Redondo Beach, CA, USA, July 12–15, 2001 Proceedings by Jianwen Su, Haiyan Xu, Oscar H. Ibarra (auth.), Christian S. Jensen, Markus Schneider, Bernhard Seeger, Vassilis J. Tsotras (eds.)


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