CHAID | A python implementation of the common CHAID algorithm | Machine Learning library
kandi X-RAY | CHAID Summary
kandi X-RAY | CHAID Summary
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Top functions reviewed by kandi - BETA
- Render the tree
- Create a node for a tree
- Generate bar chart
- Return a table for a node
- Return a set of all possible combinations
- Check if ndarray is sorted
- Yields the Bell set
- Returns the accuracy
- Calculates the maximum value for each node
- Returns the tree store
- Builds the tree
- Create a tree from a pandas dataframe
- Create a DataArray from a numpy array
- Get classification rules for given node
- Get a node by ID
- Compute the maximum value for each node in the matrix
- List of groupings
- List of node ids
- Groupings
- Get the column name
- Get the version number
- Return a set of all combinations in the group
CHAID Key Features
CHAID Examples and Code Snippets
Lines of Code : 59License : Strong Copyleft (CC BY-SA 4.0)
Copyimport os
from datetime import datetime
from tempfile import TemporaryDirectory
import plotly.io as pio
import colorlover as cl
from graphviz import Digraph
from CHAID import graph
def Graph_render(self, path, view):
if path is NoneCommunity Discussions
Trending Discussions on CHAID
QUESTION
First of all, good evening. I'm trying to improve myself at React. So I'm working on a Starwars project .
I have two problems. First of all, I listed different characters at the bottom of my character detail page. Again, I want it to be directed to different characters through the same component. But even if the link changes, my component is not refreshed. But the picture is changing .
Note: sandbox link : https://codesandbox.io/s/github/kasim444/Javascript-Camp-2019/tree/master/challenges/star-wars-app/
my project github link : https://github.com/kasim444/Javascript-Camp-2019/tree/master/challenges/star-wars-app/
...ANSWER
Answered 2019-Jul-24 at 22:38You can use componentDidUpdate and compare the the current parameter id to the previous one (you would have to save it to state) and you fetch data again IFF the two are different. componentDidUpdate will go every time the route changes.
A better approach would be to use useEffect and depend on the parameter id. In the use effect, you do all your data fetching. Something like this:
QUESTION
According to IBM's online help:
- Optionally, for CHAID, QUEST, and C&R Tree models, an additional field can be added that indicates the ID for the node to which each record is assigned.
I cannot find that option. I am using an (exhaustive) CHAID which adds the $R- (prediction field) variable but there is no $RI- (node identifier field) variable. Just in case IBM was being literal I checked running a regular CHAID (not exhaustive) but still without getting the $RI-variable I need.
I know that in SPSS v. 25 this is easily configured so is IBM just confused in their online help for modeler, or am I missing something obvious? Thanks in advance for any help.
...ANSWER
Answered 2019-Jun-17 at 14:58The get the rule identifier added to the data set, you need to first train the model to generate the model nugget. You can then edit (or open) the model nugget and select the "Settings" tab. Here you will find the option "Rule identifier" which must be checked to include the ID of node the each record is assigned.
It is important to realize that this is a setting in the generated mudel nugget and not in the modeling node. This also means that this setting must be checked (and rechecked) each time the model is retrained and the nugget is regenerated.
QUESTION
I occasionally encounter nodes in CHAID models (in SPSS Modeler) that seem to have overlapping values, such as:
Above, the split is on a continuous variable ("Fulfillment in: Working at a job..." etc. is based on a Likert-scaled item). I'm unclear about how to interpret the nodes---for example, Node 4 is <= 5.000 but Node 5 is 5.000,6.000. I notice that there are brackets but don't know what they represent.
Or is this because I've configured the build-options incorrectly? They are currently set to:
- Build new model
- Build single tree (Generate model)
- Exhaustive CHAID
- Max tree depth set to custom value: 10
- Default stopping rules (percentages), Default Ensemble rules, and all Advanced settings also are the defaults
Thank you in advance for any guidance.
...ANSWER
Answered 2019-May-08 at 15:51There aren't any overlaps. SPSS uses the same notation for ranges of values (a.k.a. "intervals") as you might find used in a calculus course. The rounded parentheses indicate that the interval does not include the endpoint, while square brackets indicate that the endpoint lies within the interval.
So, the middle node of the tree is marked "(6, 7]" but, since the variable values are integers, it's really just cases with a value of 7 that fall into that node. For a Likert-scaled item such as this one, you may want to tell SPSS to treat the variable as ordinal, rather than continuous.
QUESTION
I built a custom CHAID tree in SPSS modeler. I would like to assign the particular terminal nodes to all of the records in the dataset. How would I go about doing this from within the software?
...ANSWER
Answered 2018-Oct-25 at 13:11Assuming that you used the regular node called CHAID, if you select inside the diamond icon (created chaid model) in the tab configurations the rule identifyer, the output will add another variable called $RI-XXX that will classify all the records within the terminal nodes. Just check that option and then put a table node after that and all the records will be classified.
QUESTION
When I am trying to run a R script in my Java web application using Renjin I am getting an exception-
Exception in thread "main" org.renjin.eval.EvalException: Could not load package CHAID; tried org.renjin.bioconductor:CHAID, org.renjin.cran:CHAID
I'am not able to find the 'CHAID' package in Renjin website. Can anyone suggest me how to solve it?
ANSWER
Answered 2018-Feb-23 at 10:17This package is not published through CRAN or Bioconductor repositories. Currently, "only" packages from these two repositories (>14k packages) are build automatically and provided through renjin.org.
However, it is also possible to build a package locally. To do so you can follow the instructions on Writing Renjin Extensions pages.
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