dtree | A simple pure-Python decision tree construction algorithm | Machine Learning library

 by   chrisspen Python Version: 0.2.3 License: LGPL-3.0

kandi X-RAY | dtree Summary

kandi X-RAY | dtree Summary

dtree is a Python library typically used in Artificial Intelligence, Machine Learning applications. dtree has no bugs, it has no vulnerabilities, it has build file available, it has a Weak Copyleft License and it has low support. You can install using 'pip install dtree' or download it from GitHub, PyPI.

Given a training data set, it constructs a decision tree for classification or regression in a single batch or incrementally. It loads data from CSV files. It expects the first row in the CSV to be a header, with each element conforming to the pattern "name:type:mode". Mode is optional, and denotes the class attribute. Type identifies the attribute as either a continuous, discrete, or nominal. The module is loosely based on code published by Christopher Roach in his article [Building Decision Trees in Python] I refactored his code to be more object-oriented, and extended it to support basic regression. The class attribute can be either continuous, discrete or nominal, but all other attributes can only be discrete or nominal.
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            kandi-support Support

              dtree has a low active ecosystem.
              It has 54 star(s) with 31 fork(s). There are 6 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 1 open issues and 2 have been closed. There are 2 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of dtree is 0.2.3

            kandi-Quality Quality

              dtree has 0 bugs and 0 code smells.

            kandi-Security Security

              dtree has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              dtree code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              dtree is licensed under the LGPL-3.0 License. This license is Weak Copyleft.
              Weak Copyleft licenses have some restrictions, but you can use them in commercial projects.

            kandi-Reuse Reuse

              dtree releases are not available. You will need to build from source code and install.
              Deployable package is available in PyPI.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              dtree saves you 562 person hours of effort in developing the same functionality from scratch.
              It has 1313 lines of code, 129 functions and 2 files.
              It has high code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed dtree and discovered the below as its top functions. This is intended to give you an instant insight into dtree implemented functionality, and help decide if they suit your requirements.
            • Test the online tree
            • Return the entropy of the given attribute
            • Gets the gain of the given attribute
            • Calculate the value of a given attribute
            • Test the batch tree
            • Create a decision tree
            • Build a decision tree
            • Return the set of values for the given attribute
            • Test for milksets
            • Split the data into two rows
            • Return a shallow copy of the header
            • Add a value to the histogram
            • Test the data class
            • Test the test function
            • Return the probability of x
            • Test the forest
            • Test the entropy
            • Calculate the weighted mean of the out - of - bag weights
            • Compute the variance of the given data
            • Evaluate the out - of - bag mean
            • Returns the most frequent value for the given class attribute
            • A list of probabilities for each sample
            • List of attribute names
            • Calculate a gain variance
            • The main entry point
            • Calculate the norm of a normalized norm distribution
            Get all kandi verified functions for this library.

            dtree Key Features

            No Key Features are available at this moment for dtree.

            dtree Examples and Code Snippets

            No Code Snippets are available at this moment for dtree.

            Community Discussions

            QUESTION

            Python: Download list of CSVs inside of javascript script in web
            Asked 2021-Nov-10 at 16:52

            I want to download a list of csv with a python script.

            http://meteo.navarra.es/estaciones/descargardatos_estacion.cfm?IDEstacion=251

            I've used this code to locate the file urls

            ...

            ANSWER

            Answered 2021-Nov-10 at 16:52

            beautifulsoup will only return the contents of a script element as text, you will need to extract the entries yourself from inside. This could be done using a regular expression to extract the .add lines. Each text line could be converted into a Python list using literal_eval and then you could take the last element.

            For example:

            Source https://stackoverflow.com/questions/69916231

            QUESTION

            Why the compile line is wrong which makes it not able to find the header file
            Asked 2021-Jun-22 at 15:45

            I have the following make file:

            ...

            ANSWER

            Answered 2021-Jun-22 at 15:45

            The built-in rule for compiling .c files to .o files uses $(CFLAGS), not $(App_C_Flags).

            Is it possible that the rule

            Source https://stackoverflow.com/questions/68086474

            QUESTION

            what does different color of nodes in decision tree classifier sklearn indicate?
            Asked 2021-Jun-05 at 15:53

            I am trying to visualize the output of decision tree classifier. This is my code

            ...

            ANSWER

            Answered 2021-Jun-05 at 15:53

            According to the documentation of plot_tree for its filled parameter:

            filled: bool, default=False
            When set to True, paint nodes to indicate majority class for classification, extremity of values for regression, or purity of node for multi-output.

            So in classification tasks, the color indicates to which class the majority of the samples at each node belong to.

            Source https://stackoverflow.com/questions/67849391

            QUESTION

            SVC Unable to find the attributes '_probA'
            Asked 2021-Apr-20 at 14:57

            I am developing credit card fraud detections project in machine learning. I have download the code form GitHub (https://github.com/devrajkataria/Credit-Card-Fraud-Detection-ML-WebApp) but I am getting following errors:

            ...

            ANSWER

            Answered 2021-Apr-20 at 14:57

            This is very likely to be a versioning problem. Your scikit-learn version is probably the latest version and the model.pkl you downloaded from the repo you mentioned is an old and incompatible version.

            To avoid this kind of problem, we should stick to best practices such as using a requirements.txt file defining exactly the versions using during development. The same versions could then be installed on production.

            If you really need to use this model.pkl from the repo, I'd suggest creating a GitHub issue asking for a requirement.txt file. Alternatively, you could try different scikit-learn versions until you get it working, but this can be very cumbersome.

            Source https://stackoverflow.com/questions/67180525

            QUESTION

            Change String Indices to integer
            Asked 2020-Nov-24 at 06:37

            I met this kind of error described as:

            ...

            ANSWER

            Answered 2020-Nov-24 at 06:33

            This is error mostly raise when we try to access list item using string than index number For example if list having ["hii","hello","bye"] and this list's element can be called by index number but if we insert string in the place of index this type of error occurs

            Source https://stackoverflow.com/questions/64981225

            QUESTION

            Delete a segment from BST in Python
            Asked 2020-Oct-25 at 22:28

            first post here. I am supposed to build a BST (which I have done) and create a deleteNode function. I keep trying to run the function but it is unfortunately not working.

            #deleteFunction#

            ...

            ANSWER

            Answered 2020-Oct-25 at 22:28

            This is my favorite version of deleting a node in BST - use deleteNode function, with root being the root node and key being the node value that you want to delete.

            Source https://stackoverflow.com/questions/64344432

            QUESTION

            Pyspark.ml - Error when loading model and Pipeline
            Asked 2020-Oct-20 at 06:12

            I want to import a trained pyspark model (or pipeline) into a pyspark script. I trained a decision tree model like so:

            ...

            ANSWER

            Answered 2020-Oct-20 at 06:12

            There were two problems:

            1. SSH authenticated communication must be enabled between all nodes in the cluster. Even though all nodes in my Spark cluster are in the same network, only the master had SSH authentication to the workers and not vise versa.

            2. The model must be available to all nodes in the cluster. This may sound really obvious but I thought that the model files need to only be available to the master who then diffuses this to the worker nodes. In other words, when you load the model like so:

            Source https://stackoverflow.com/questions/64356992

            QUESTION

            How to use a linear regression model to produce a single prediction value?
            Asked 2020-Sep-29 at 16:11

            I have created three machine learning models using Scikit-learn in Jupyter Notebook (Linear regression, Dtree and Random forest). The purpose of the models are to predict the size of a cyclone (prediction/output ROCI) based on several cyclone parameters (predictors/inputs). There are 9004 rows. Below is an example of the linear regression model.

            ...

            ANSWER

            Answered 2020-Sep-29 at 12:53

            For that you'd have to write

            Source https://stackoverflow.com/questions/64119734

            QUESTION

            NameError: name 'pydotplus' is not defined
            Asked 2020-Aug-24 at 20:02

            I am using Anaconda and Jupyter Notebook and got the following error:

            ...

            ANSWER

            Answered 2020-Aug-24 at 15:55

            Have you tried importing the specific method you need from pydotplus instead?

            Like: from pydotplus import graph_from_dot_data since you're only using that one method from the module.

            Source https://stackoverflow.com/questions/63564183

            QUESTION

            Get a decision tree in a dictionary
            Asked 2020-May-16 at 16:32

            I am looking for a way in python to make a dictionary of dictionaries based on the desired structure dynamically.

            I have the data bellow:

            ...

            ANSWER

            Answered 2020-May-16 at 05:16

            Yes, you can achieve this using the following code:

            Source https://stackoverflow.com/questions/61831953

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install dtree

            Download the code and then run:.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            Install
          • PyPI

            pip install dtree

          • CLONE
          • HTTPS

            https://github.com/chrisspen/dtree.git

          • CLI

            gh repo clone chrisspen/dtree

          • sshUrl

            git@github.com:chrisspen/dtree.git

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