river | 🌊 Online machine learning in Python | Machine Learning library
kandi X-RAY | river Summary
kandi X-RAY | river Summary
River is a Python library for online machine learning. It is the result of a merger between creme and scikit-multiflow. River's ambition is to be the go-to library for doing machine learning on streaming data.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Calculates the progressive val score for a given model
- Proximal validation
- Iterates over the gradient descent
- Evaluate policies
- Generate a series of x and y horizon
- Evaluate the model on the given dataset
- Render the tree
- Generate a list of RGB colors
- Return a stream from a CSV file
- Opens a file
- Return an iterator over libsvm
- Generate subspaces
- Prints a single error message
- Prints the prediction
- Learn a single observation
- Computes the anomaly score of a given sample
- Learn a set of features
- Train one or more models
- Return an iterator over an ARFF file
- Calculate class and feature counts for each class
- Computes the best possible split suggestion for the given criterion
- Learn the features of each class
- Train a single node
- Expand model parameters
- Learn a single node
- Learn a single value
river Key Features
river Examples and Code Snippets
Lines of Code : 83License : Permissive (Apache-2.0)
Copy#!/usr/bin/env python
import river
import uuid
import numpy as np
stream_name = str(uuid.uuid4())
print("Creating a stream with name", stream_name)
# Create a River StreamWriter that connects to Redis at localhost with port 6379 (the default)
w = 
License : No LicenseCopy$ curl localhost:9200/blog/posts/_search?q=body:cupiditate
{
"_shards": {
"failed": 0,
"successful": 1,
"total": 1
},
"hits": {
"hits": [
{
"_id": "261f4990-627b-4844-96ed-08b18 $ curl -XPUT localhost:9200/_river/rethinkdb/_meta
// localhost:9200/_river/rethinkdb/_meta
{
"type": "rethinkdb",
"rethinkdb": {
"host": "localhost",
"port": 28015,
"auth_key": "",
"databases": {
"blog": {
"posts": import {
Color,
Matrix4,
Mesh,
PerspectiveCamera,
Plane,
Quaternion,
ShaderMaterial,
UniformsUtils,
Vector3,
Vector4,
WebGLRenderTarget,
LinearEncoding,
NoToneMapping,
HalfFloatType
} from 'three';
class Refractor extends Mesh {
cons def dfs(coord, matrix):
(i, j) = coord
if i < 0 or j < 0:
# invalid position
return 0
n = len(matrix)
m = len(matrix[0])
if i == n or j == m:
# invalid position
return 0
if matrix[i][j def river_sizes(matrix):
n = len(matrix)
m = len(matrix[0])
results = []
for i in range(n):
for j in range(m):
if matrix[i][j] != 0:
# find the river size
size = dfs((i, j), matrix ,\s*((?:(?!\sand\s)[^,])*)(?=[^,]*$)
,\s*([^,]*?)(?=(?:\sand\s[^,]*)?$)
.*,\s*((?:(?!\sand\s)[^,])*)
.*,\s*([^,]*?)(?=(?:\sand\s[^,]*)?$)
m = re.search(r'.*,\s*([^,]*?)(?=(?:\sand\s[^,]*)?$)', text)
if m:
printdf2=df.assign(maxRiverLength=df.groupby('Basin_ID').transform(lambda x: x.max())['Length']).set_index(['Basin_ID','River_ID'])
df.set_index(['Basin_ID','River_ID']).loc[df2[df2['Length']==df2['maxRiverLength']].index].reset_index()
river_info = dict()
flow_info = list()
river_data = [
"Avon,27/05/2020 12:00:00 a.m.,1.634",
"Avon,27/05/2020 1:00:00 a.m.,1.628",
"Hakatere,27/05/2020 12:00:00 a.m.,9.813",
"Hakatere,27/05/2020 1:00:00 a.m.,9.813",
"Rdf.groupby(['station_number', pd.Grouper(key='date', freq='D')]).mean()
df.groupby(['station_number', df['date'].dt.normalize()]).mean()
Community Discussions
Trending Discussions on river
QUESTION
Help me install the react-pdf package (https://github.com/diegomura/react-pdf) on create react app. I can't make changes to webpack.config. I do it according to the instructions I found here from the user River Twilight: How to update webpack config for a react project created using create-react-app?
According to the instructions of installing react-pdf
- I run
npm install process browserify-zlib stream-browserify util buffer assert - Created
config-override.jsin project root folder - Next you need to insert the following lines into the config:
ANSWER
Answered 2022-Feb-28 at 00:46These errors seems to have happened due to react-scripts v5. Took me a day to figure out a solution while using react-router v5. But it seems the best approach for now is to stay on, or revert back to v4.0.3 until v5 adds back support for node built-ins #11764 is merged and released.
This issue on Github might help.
QUESTION
I'm trying to make a website where I have a footer at the bottom of the page. I found another solution on how to place the footer at the bottom of the page online which worked amazing with no problems.
But when I tried making the website responsive I recognized that for some reason the footer took up a lot of space which created a lot of blank space between the main content and the footer. I've tried to remove the blank space, but that just results in a bunch of other problems.
Preferably I would want to remove the blank space and have the footer right under the main content of the page. Any help or advice would be appreciated!
...ANSWER
Answered 2022-Jan-31 at 19:23The best solution would be to remove the flex from the body element & instead set the flex properties on the container. With your current structure, you can fix this by adding the following CSS to footer.
QUESTION
This is really odd: I'm using lit in a storybook (using @storybook/html).
I do not know why, but in my environment lit does not update the component automatically when a property has been changed. If I call requestUpdate explicitly, it is indeed updating.
This happens with every component, even this very simple demo component (shows 'waiting...' first, and after 3 seconds it should show 'done') ... working obviously in this codesandbox ... but not working in my storybook :-(
https://codesandbox.io/s/weathered-river-087wz?file=/src/index.ts
Is there by any change anybody who might have an idea what could be the reason for this strange issue? TYVMIA
[EDIT]: This might be the reason:
https://lit.dev/msg/class-field-shadowing
You should use "useDefineForClassFields": false in tsconfig.json.
Actually I indeed had set it to true, but after changing to false I still have the above issue.
PS: I'm using the latest versions of lit (2.1.1) and storybook (6.4.13)
PPS: Removing directory node_modules and file yarn.lock and running yarn install did not solve the problem
ANSWER
Answered 2022-Jan-30 at 18:03In tsconfig.json you have to set option useDefineForClassFields to false to make lit run properly. For more information please see
https://lit.dev/msg/class-field-shadowing .
To fully solve the issue with Storybook/Webpack I also had to do the following:
yarn add -D ts-loader@8.3.0(version 9.x does not work with Webpack4)[EDIT: Please check Vince's answer below ... his solution (= main.js + webpackFinal) seems to be the preferred way]
Adding the following to
.storybook/webpack.config.json(not really sure why):
QUESTION
I'm an absolute biginner with React and I'm experiencing a really (hopefully) simple problem with routes in React (v6). I have:
- 1 NavBar
- 2 components
I would like to access the two components through the "NavBar menu" using React routes 6 but I'm not able to fix the NavBar at the top. It disappears as soon as I navigate to the component.
I will explain it using an image:
This is my configuration:
...ANSWER
Answered 2022-Jan-29 at 22:55Pull NavBar outside of Routes:
QUESTION
I know there is a few questions on SO regarding the conversion of JSON file to a pandas df but nothing is working. Specifically, the JSON requests the current days information. I'm trying to return the tabular structure that corresponds with Data but I'm only getting the first dict object.
I'll list the current attempts and the resulting outputs below.
...ANSWER
Answered 2022-Jan-20 at 03:23record_path is the path to the record, so you should specify the full path
QUESTION
I am trying to change the order of the slices in a pie chart in R. I want the largest value (38, which belongs to Agricultural intensification) on the right of 0 degrees, the second largest slice (20, belongs to Deforestation) on the left, the third largest value (17, Urbanization) as second one on the right, and the lowest value (10, Wetland or river modification) as second one on the left. I used the code written out below. Thank you so much for helping me out!
Kind regards,
Stefanie
Pie chart ...ANSWER
Answered 2022-Jan-18 at 19:04Convert your group column to a factor and set the levels in your desired order:
QUESTION
I'm new to unit testing, and trying to mock postContinent. But gives null and BadRequestObjectResult.
ANSWER
Answered 2022-Jan-07 at 08:32The problem is in your Setup function. Reference types are equal only if you have overridden the equals function or if the are the exact same reference.
So by setting it up with the new keyword, it will never match the execution time object.
Try the It.IsAny function from MOQ to verify.
Check the example here: https://documentation.help/Moq/3CF54A74.htm
QUESTION
When I apply Month/Year to Cases or Deaths from my data, the values explode. For Cases it goes from approximately 48 million to over 1 billion, and for Deaths it goes from about 700 thousand to over 22 million. However, when I try the same thing with Initial Claims or the Stringency Index, my values remain correct. I'm trying to find the month over month percentage change by the way. And I'm using the Date column. I only select 2020 and 2021 in the filter for Year.
What I'm asking about is Sheet 21.
Link to workbook: https://public.tableau.com/app/profile/nilajah.rivers/viz/CoronaVirusProject_16323687296770/Sheet21
...ANSWER
Answered 2021-Dec-30 at 16:25Your problem is that the data points are daily cumulative deaths. If you change the date aggregation to anything other than days, Tableau will default to summing the numbers for all the days in the month. This will give the wrong result, obviously.
If you want to show the correct total deaths or cases regardless of the time aggregation (months, days, weeks etc.) then you could use the New Case or New Death numbers plus a running sum table calculation. This will always give the correct total for the time period.
Table calculations will also allow automatic calculation of the period to period % change from the same data fields.
This is a common problem when working with datasets that offer pre-calculated aggregations. Tableau doesn't need that as it can dynamically calculate the aggregation of a field over any given time period but it is easy to forget which field has pre-aggregated data and which has raw data. Pre-aggregated fields assume a particular time period and can't be used for different time periods without disentangling that assumption (which is unnecessary if you also have the raw data (in this case daily new deaths/cases).
QUESTION
I am given a matrix containing only 1's and 0's, where adjacent 1's (horizontal or vertical, NOT diagonal) form rivers. I am asked to return an array of all river sizes in the matrix.
(Note the order of the river sizes don't matter- they can be in any order) i.e. [2,1,2,2,5] is also a valid solution!
I am writing the recursive part of the code, where as we explore the matrix, if we stumble on a 1, we will run a recursion to explore its adjacent left, right,up and down for any 1's.
The code is quite lengthy, and I don't believe it is necessary for my question. My question is, as I call on the recursive function, and I update currentRiverSize +1 (initialised as 0) in the argument of the recursive function as we stumble across more 1's, can I then at the end simply append this to the array?
I have a feeling the recursion is not structured correctly!
...ANSWER
Answered 2021-Dec-24 at 16:52The structure of your code doesn't seem to be doing what you describe you want it to be doing. Some suggestions -
- Instead of using the 4 different conditions try to use a single condition at the top which checks for the bounds
- Are we allowed to modify the matrix? In that case we can do away without the
entryExplored - We don't need to pass the
riverSizesto the DFS recursion function(since we only need to append the value toriverSizesonce per DFS run), so we can make the function return that value instead.
Here's a simplified code that does what you want -
QUESTION
I have a directed graph (DAG) representing a river network. On some of the rivers (edges) there are flow gauging stations. I would like to rank these stations according to their hierarchy from the most upstream river segments. The most upstream stations will have a class 1. Stations with only 1 station rank upstream will have a class 2, stations with 2 station ranks upstream will have a class 3, and so on. Is there an algorithm in igraph to do that? I searched in the doc for terms like "rank", "hierarchy", "order" but didn't find anything resembling to what I would like to perform.
I also used "distances" from the most downstream edge (the outlet of the river network) for the classification but it does not account for the relations among the stations (edges with very different distances can have the same rank depending on the river network configuration)...
Any suggestion on a graph algorithm to do that?
Here is an illustration of the classification:
Here is the data I use for testing (NOT related to the picture):
...ANSWER
Answered 2021-Dec-07 at 22:28You can try the code below
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install river
River is intended to work with Python 3.6 or above. Installation can be done with pip:. There are wheels available for Linux, MacOS, and Windows, which means that you most probably won't have to build River from source.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
