Carto‐SOM: cartogram creation using self‐organizing maps
نویسندگان
چکیده
منابع مشابه
Carto-SOM: cartogram creation using self-organizing maps
The basic idea of a cartogram is to distort a map. This distortion comes from the substitution of area for some other variable (in most examples population. The SOM constitutes a very flexible tool that has been used in many different tasks. In this article we have presented a general method for constructing density-equalizing projections or cartograms, using the basic SOM algorithm, providing ...
متن کاملCartogram Data Projection for Self-Organizing Maps
Self-Organizing Maps (SOMs) are often visualized by applying Ultsch’s Unified Distance Matrix (U-Matrix) and labeling the cells of the 2-D grid with training data observations. Although powerful and the de facto standard visualization for SOMs, this does not provide for two key pieces of information when considering real world data mining applications: (a) While the U-Matrix indicates the locat...
متن کاملValue-by-alpha maps: An alternative technique to the cartogram.
The cartogram, or value-by-area map, is a popular technique for cartographically representing social data. Such maps visually equalize a basemap prior to mapping a social variable by adjusting the size of each enumeration unit by a second, related variable. However, to scale the basemap units according to an equalizing variable, cartograms must distort the shape and/or topology of the original ...
متن کاملPrior Knowledge Integration in Selforganizing Maps for Complex Process Supervision
The self-organizing map (SOM) can be used for process condition monitoring. It defines a nonlinear projection from a high dimensional space on a typically 2D space where different process conditions are mapped into different regions. This projection is obtained on an unsupervised data-driven basis and requires a further interpretation stage to define the 2D regions corresponding to different co...
متن کاملCartograms, Self-Organizing Maps, and Magnification Control
This paper presents a simple way to compensate the magnification effect of Self-Organizing Maps (SOM) when creating cartograms using CartoSOM. It starts with a brief explanation of what a cartogram is, how it can be used, and what sort of metrics can be used to assess its quality. The methodology for creating a cartogram with a SOM is then presented together with an explanation of how the magni...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Geographical Information Science
سال: 2009
ISSN: 1365-8816,1362-3087
DOI: 10.1080/13658810801958885