spatial modeling in gis

Ngày tải lên: 07/07/2014, 04:20

Ngày tải lên: 20/06/2014, 21:20

Ngày tải lên: 12/08/2013, 11:11

Ngày tải lên: 05/09/2013, 16:10

Ngày tải lên: 08/10/2013, 20:20

Ngày tải lên: 08/10/2013, 21:20

... Discussion • Spatial data and spatial databases • Adding spatial extensions to PostgreSQL • OpenGIS and standards Spatial Relationships Containment: Rivers inside watersheds and land (islands) inside ... election. • Want to predict voting in 2001 by looking at voting in 1996. • Intersect the 2001 district polygon with the voting areas polygons. • Outside will have zero area • Inside will have 100% area • ... size – GiST index / Index extensions – Easy to add custom functions The OpenGIS Consortium From the OpenGIS Consortium guide “Much geospatial data is available on the web and in off-line archives,...

Ngày tải lên: 20/02/2014, 05:21

Ngày tải lên: 07/03/2014, 02:20

... point in p(B). • p satisfies the relationship A behind B, stating that A is behind B in the picture p, iff the z-coordinate of each point in p(A) is greater than the z- coordinate of each point in ... Mechanism in the Spatial Reasoning component will also be invoked to generate the compact/minimal image index at the Image Indexing stage. Our iconic indexing approach will generate the 2D string representation ... Otherwise, continue (and we know G inside is acyclic). Suppose, for example, SR inside ={A inside B, B inside C, C inside A}. Then G T inside contains all nine spatial relationships Y inside Z, w...

Ngày tải lên: 07/03/2014, 14:20

... f& all ui in (u,, . . . , us] do Ui:= ui * T; 2.3 Scaling An important concept in viewing geometric objects on a computer display is varying the size in form of scaling (or stretching). Vertices ... is, the engineer, in order to retrieve and manipulate the data because it requires an intrinsic knowledge of the underlying schema definition. In order to retrieve all the bounding vertices ... allow the modeling of engineering objects in a natural way-or at least they do not support the retrieval and manipulation of such objects in a way that is familiar to engineers. In particular,...

Ngày tải lên: 07/03/2014, 23:20

... investigated. Three main services: registration information service, clinic information service, and FAQ information service are used. This system mainly provides the function of on- line registration. ... 4.10 2.70 9.11 13.96 12.81 13.46 11.56 10.71 9.76 4.70 4.35 2.75 02468101214 Others Registration revision Dr.'s inforamtion Time Greeting Clinic information Registration FAQ Dr. and Clinic Confirmatin (others) Confirmation (clinic) Cancel registration Figure 3 Frequencies ... computa- tion of meaning. World Scientific Publishing Co Inc. J. Gao, and H. Suzuki. 2003. Unsupervised learning of dependency structure for language modeling. In Proceedings of ACL 2003 ,...

Ngày tải lên: 08/03/2014, 02:21

... terrain for an ever-increasing range of GIS applications. At the same time, GIS users are becoming increasingly aware of the effects of error in their applications. In the digital terrain modelling ... error-directed point insertion. For the purpose of inserting constraining linear features into the pyramid, the method of classifying vertices by means of the vertical error criterion is inadequate, since ... of researchers working in such disciplines as photogrammetry, surveying, cartography, civil and mining engineering, geology, geography and hydrology. The uncoordinated and independent nature...

Ngày tải lên: 14/03/2014, 09:20

... pure phenomenological modeling without taking into account the microstructural behavior. On the other hand, this approach is an engineering method in material modeling since the parameter identification ... total system for determining strain from given stress or stress from given strain for ε v >ε p . Hence it follows that strain is determined in terms of stress by integrating the differential ... added. Looking on the basics of this book it is obvious that the starting point is the method of rheological models. In Continuum Mechanics one can split the approaches in material modeling into three...

Ngày tải lên: 16/03/2014, 22:20

... of training, to measure the improve- ment in spatial learning. Thigmotaxis, circling and floating activities, as defined by the hsv image software, were recorded and animals (n = 4) displaying such ... protofibrils in the brain, making tg-ArcSwe a highly suitable model for investigating the pathogenic role of these Ab assemblies. In the present study, we estimated Ab protofibril levels in the brain and ... 24 h. Interestingly, high levels of protofibrils, but not total Ab, were associated with inferior spatial learning, at least in young mice. This implies that Ab protofibril levels in the brain of tg-ArcSwe...

Ngày tải lên: 23/03/2014, 06:20

... The bilin- gual lexical rules presented here will further refine the idea of a tlink by minimizing the number of bilingual lexical entries that have to be coded manually, since the bilingual ... role in determining which readings of a preposition sense are allowed. Deciding whether the preposition is used in a spatial sense, as opposed to a temporal or causative sense, is determined ... and of having bilingual lexical rules which op- erate over the bilingual lexicon to expand it. By for- mulating regularities in this way consistency and com- pactness in the bilingual lexicon,...

Ngày tải lên: 23/03/2014, 20:20

... their POS tags in the input. Verbs are in ected in the input (“haben”, meaning “have” as in “they have”, in the example). Prepositions are lexicalized (“zu” in the example) and indicate which case ... BLEU. We again see many in- teresting generalizations. For instance, take the case of translating English miniature cameras to the German compound Miniaturkameras. minia- ture camera or miniature ... occur in the training data, and so there is no appropri- ate phrase pair in any system (baseline, in ec- tion, or in ection&compound-splitting). How- ever, our system with compound splitting...

Ngày tải lên: 24/03/2014, 03:20

... N.Asin Figure 1.4, the uncertainty decreases with increasing sample size N ,which reflects the obvious fact that our trust in the estimation increases as more training data become available. Since ... Friedman. Learning belief networks in the presence of missing values and hidden variables. In D. H. Fisher, editor, Proceedings of the Four- teenth International Conference on Machine Learning (ICML), ... in bioinformatics and in medical informatics, were quite ad hoc. In recent years, however, substantial progress has been made in our understanding of and experience with probabilistic modelling....

Ngày tải lên: 29/03/2014, 11:20

... pruning and clustering. In Proceedings of the IEEE International Conference on Spoken Language Processing (ICSLP), Beijing, China. Joshua Goodman. 2000. A bit of progress in language modeling. ... in the log-linear com- bination in Eq. (11). The weights are trained using minimum error rate training (Och, 2003) with BLEU score as the objective function. The dev and test data sets contain ... expect to be able to increase the gains resulting from using class-based models by using more sophisticated techniques for combining them with word-based models such as linear inter- polations of...

Ngày tải lên: 31/03/2014, 00:20