Sequoia | Java library for scoring and evaluating decision trees | Rule Engine library
kandi X-RAY | Sequoia Summary
kandi X-RAY | Sequoia Summary
An efficient Java decision tree library.
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Top functions reviewed by kandi - BETA
- Reduce the tree into a tree
- Returns the next node offset for the given features
- Adds a child offset
- Reduces a set of nodes to a leaf
- Parse a forest from an input stream
- Parses a node
- Construct a forest from a list of trees
- Read a list of trees from a BufferedReader
- Score a set of trees
- Traverse a single tree
- Scores the trees in the tree
- Traverse a single value
- Score the tree for the tree
- Construct a new DoubleForest from a given forest
- Creates a forest from the forest
- String representation of this node
Sequoia Key Features
Sequoia Examples and Code Snippets
Lines of Code : 4License : Permissive (Apache-2.0)
Copypublic Node(F feature, double value, boolean isLeaf, int[] childOffsets, Condition condition)
public static Tree createTreeFromNodes(List> nodes)
public static Forest createForestFromTrees(List> trees)
Community Discussions
Trending Discussions on Sequoia
QUESTION
I want to use Python to read and write YAML frontmatter in markdown files. I have come across the ruamel.yaml package but am having trouble understanding how to use it for this purpose.
If I have a markdown file:
...ANSWER
Answered 2021-Jun-14 at 11:35When you have multiple YAML documents in one file these are separated with a line consisting of
three dashes, or starting with three dashes followed by a space.
Most YAML parsers, including ruamel.yaml either expect a single document file (when using YAML().load())
or a multi-document file (when using YAML().load_all()).
The method .load() returns the single data structure, and complains if there seems to be more than one
document (i.e. when it encounters the second --- in your file). The
.load_all() method can handle one or more YAML documents, but always returns
an iterator.
Your input happens to be a valid multi-document YAML file but the markdown part often makes this not be the case. It easily could
always have been valid YAML by just changing the second --- into --- | thereby making the
markdown part a (multi-line) literal scalar string. I have no idea why the
designers of such YAML frontmatter formats didn't specify that, it might have to
do that some parsers (like PyYAML) fail to parse such non-indented literal scalar
strings at the root level correctly, although examples of those are in the YAML
specification.
In your example the markdown part is so simple that it is valid YAML without
having to specify the | for literal scalar string. So you could use
.load_all() on this input. But just adding e.g. a line
starting with a dash to the markdown section, will result in an invalid YAML
document, so you if you use .load_all(), you have to make sure you
do not iterate so far as to parse the second document:
QUESTION
I have a dataframe in which few of the columns are object, and I want to change one of them into a int column so I can work with it. and do some calculation. but when ever am trying to do it am getting this error.
here's my code.
code which giving me the error.
...ANSWER
Answered 2021-Feb-07 at 08:53There is a categorical variable instance 'undisclosed' in your df['Amount in USD'] which cannot be converted to int per se.
You need to map values that are not numeric with string type on your own, i.e.:
QUESTION
In the above exercise, I have a working v-for loop that prints all of the JSON objects in my JSON file, I am trying to only print the first object instead of the whole list... is there a way?
- I could not find an answer on google
here is my code:
...ANSWER
Answered 2021-Jan-19 at 16:21So as per you data structure your code should be something like
QUESTION
I have 2 pandas dataframes:
- state abbreviations and states.
- state names and all the national parks in each state. This is not the whole dataframe.
I need to search for a user input in the state dataframe, in this case the state abbreviation, then take the adjacent value, the full name and use that to display the correct column from the parks dataframe. I am sure this could be easier if they were one dataframe, but I could not figure a way to do that and keep all of the functionality; I want to be able to display the state dataframe for the user. Any suggestions would be really appreciated. here is my code. Around line 72 I could use help. I kept as much out as i could while keeping this functional, it is a large program, but this is my biggest problem so far. thank you
...ANSWER
Answered 2020-Nov-19 at 05:41You can do your task in this way:
Combine the all-states and abbreviations into a single column
QUESTION
I have a dataframe in jupyter notebook with following columns:
ANSWER
Answered 2020-Sep-30 at 20:49You first need to modify the true/false/null values in your json. Those are being treating as unrecognized variable names since they are unquoted. If you convert them to True/False/None, pd.json_normalize will parse it fine:
QUESTION
Is it possible to read tuple list from ObjectContext object?
I have database query something like this, inside a stored procedure
...ANSWER
Answered 2019-Nov-25 at 12:35you can't use tuple in this case because tuple class doesn't have default constructor (parameter-less constructor) .net framework use reflection to create this type automatically so it should have default constructor.
so solution in this case is creating class that contains these three properties and use it instead of tuple
QUESTION
I think I have an order of events issue that I am having trouble tracking down. For background, you can check out this stack question here. HE was a hero and pointed out an extra ' in my json fro my DB and I was able to fix that, and a silly re-naming of a couple of variables.
His JSFiddle works great but the only difference is I have an AJAX call instead of hard coding the JSON in there. When I run the code with JSON I do not get anything populating on my map, so I put a bunch of consoloe.log() statements in there to see what was going on. I suspect the function to load markers is running before the ajax call.
...ANSWER
Answered 2019-Sep-21 at 18:29That is because XMLHttpRequest.onreadystatechange is called multiple times, it is called every time readyState changes. It can be called when the connection is opened, when you receive the response headers, when the response body starts to be sent and when the response body has beed received. That is why there is a check in there for readyState == 4. 4 is XMLHttpRequest.DONE.
To make sure initialize is called before the AJAX response comes in, you can place the xmlhttp.send() call at the end of that function.
QUESTION
I am pulling data from MySQL into a web page and I can not see while I am stuck in my while loop.
For background I am pulling data from my database and trying to put it into objects that look something like this:
...ANSWER
Answered 2019-Sep-21 at 13:18I get javascript errors when I run the posted code against your JSON response:
- there is an extraneous
'in the posted JSON string - The data created from your dynamic response doesn't match the hardcoded object.
hardcoded object:
QUESTION
I am pulling data from MySQL into a web page and I can not see while I am stuck in my while loop.
For background I am pulling data from my database and trying to put it into objects that look something like this:
...ANSWER
Answered 2019-Sep-21 at 01:39The problem is that you are not incrementing i inside the while loop
This means that the loops condition will always compare the TrailHeadID properties of the i and i + 1 objects in the array. If the array has objects that have the same value for this property, the while loop's condition will always be true.
Here is how I will do it:
QUESTION
I'm having a problem right now in a project that im making just to learn more about java, so I have a txt file wich has wonders, i'll have to read it and then store it different information in a object (name country, heightdepth, acessbility, hostility, kmfromlondon, temperature, wondervalue and a fact about the wonder), then I have to sort by the hostility rate and output the all of the wonders
heres the txt file of the wonders:
...ANSWER
Answered 2019-Aug-08 at 23:01The regular way to define a custom ordering in Java is via a Comparator instance. This object can be plugged into the sorting routines of eg Arrays or Collections.
In Java 8 for example you can sort your array like so:
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