User Tools

Site Tools


how_to_use_gbay

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision
Previous revision
how_to_use_gbay [2020/06/05 17:34] – Equation formatting stritihahow_to_use_gbay [2023/04/21 15:30] (current) – external edit 127.0.0.1
Line 21: Line 21:
 When the input data represents **hard evidence** (we know the state of the node at each pixel, with 100% certainty, e.g. we know that the land cover of a pixel is forest), then the input raster has one band, where the value of each pixel corresponds to the number of a state of the node. For continuous nodes, the value of the pixel represents the real value (e.g. forest cover of 75%).  When the input data represents **hard evidence** (we know the state of the node at each pixel, with 100% certainty, e.g. we know that the land cover of a pixel is forest), then the input raster has one band, where the value of each pixel corresponds to the number of a state of the node. For continuous nodes, the value of the pixel represents the real value (e.g. forest cover of 75%). 
  
-When we use **soft evidence** (a probability distribution for each pixel), the input raster should have as many bands as the number of states of the corresponding node. Each band represents the probability of a state (e.g. the probability that the land cover of a pixel is forest). The values of all bands should sum up to 100. +When we use **soft evidence** (a probability distribution for each pixel), the input raster should have as many bands as the number of states of the corresponding node. Each band represents the probability of a state (e.g. the probability that the land cover of a pixel is forest). The values of all bands should sum up to 100. 
 + 
 +If soft evidence is given (to a root or intermediate node), the effect is identical to the Netica's "calibrate..." function (in the "Enter findings" menu).  
 === 3.2 Vector === === 3.2 Vector ===
 When using vector data (zipped **.shp** files or **.gdb** ESRI geodatabase files), the input nodes are represented in the attribute table of the dataset.  When using vector data (zipped **.shp** files or **.gdb** ESRI geodatabase files), the input nodes are represented in the attribute table of the dataset. 
how_to_use_gbay.1591371283.txt.gz · Last modified: 2023/04/21 15:30 (external edit)