bandits | Armed Bandit algorithms applied to the MovieLens 20M dataset | Recommender System library
kandi X-RAY | bandits Summary
kandi X-RAY | bandits Summary
Implementations of UCB1, Bayesian UCB, Epsilon Greedy, and EXP3 bandit algorithms on the Movielens-20m dataset. Algorithms are evaluated offline using replay.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Evaluate Exp3 policy
- Score a dataframe
- Calculates weight based on action distribution
- Draw a random arm
- Compute the distance between weights
- Return a list of movie ratings
- Prepare movie logs
- Read movie data
- Returns a list of movie ratings
- Prepare the movie data for 1m
- Uses uBC1 policy
- Generate a random movie based on an epsilon distribution
- Score a time series
bandits Key Features
bandits Examples and Code Snippets
Community Discussions
Trending Discussions on bandits
QUESTION
I’m checking Vowpal Wabbit’s documentation for how it’s actually learning. Traditional Contextual Bandits learn by having F(context, action) = Reward, find action that maximizes Reward, and returns action as recommendation. The “F” is any model; linear, neural net, xgb, etc... that is learned through batch processing. I.E. collect 100 contexts, 100 actions, 100 rewards, train ML model, then do it again.
Now, on VW it says it reduces “all contextual bandit problems to cost-sensitive multiclass classification problems.” Ok, read up on that but there still needs to be some function F to minimize this problem doesn’t there?
I’ve thoroughly read the documentation and either:
- Missed what the default learner is for batch processing or,
- Don’t understand how VW is actually learning in this cost-sensitive framework?
I’ve even scoured the vw.learn() method inside pyvwlib. Thanks for the help!
...ANSWER
Answered 2020-Dec-03 at 16:29Missed what the default learner is for batch processing or,
The default learner in VW is SGD on a linear representation, but this can be modified using command line arguments.
Don’t understand how VW is actually learning in this cost-sensitive framework?
In contextual bandit learning, the reward associated with the taken action is presented for learning. VW in ips mode converts this into a reward for each action by putting zeros at the actions not taken and importance-weighting the reward for the action taken. Having imputed the missing data, it then treats the problem as a supervised learning problem.
QUESTION
Good afternoon.
I am attempting to make a small game inspired by Among Us. The game will feature two bandits if there are 7 or more players, and one bandit if the player count is 6 or less.
I have run into a problem though, so I am attempting to create multiple constructors, here is how I imagine the layout to be.
Console -> Input names separated by comma -> String[] names -> newPlayer Constructor
The newPlayer constructor will then determine the number of players, and sort them into their respective constructor, using Math.random to determine the bandits.
Bandit route newPlayer Constructor -> Bandit Constructor -> Player Constructor
Cowboy route newPlayer Constructor -> Bandit Constructor -> Player Constructor
The problem is that after the data is given to the Player constructor, I'd like to create an array of type Player[], so I can easily access the data within, without creating invidual Player variables, and then making this array accessible to the rest of the classes within the package. I'm looking for the most concise way to do it.
Although I feel like this may not require code for context, I'll provide it in case it helps answer my question.
Bandit Class
...ANSWER
Answered 2020-Sep-29 at 17:33"I'd like the array of Players to be created within the tester class": I would suggest using List interface instead of native java array (much easier to use). Something like this: List players = new ArrayList<>()
and you can use players.add( /*player*/ )
and players.get(/*idx*/)
to add and retrieve.
"accessible to the rest of the classes within the package": a default class property is accessible for classes within the same package. Like this: List players;
or already initialized: List players = new ArrayList<>();
. Don't use any modifier like private
, public
or protected
and it will mean this property is "default" access (within same package). See: https://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html
QUESTION
In my game, the "boar" line of code will execute if the object hits a boar, but the "bandit" line of script will not execute if I hit a bandit.
Both of the game objects have the "enemy" tag.
If I move the bandit line of code to the top, that line will now work when colliding with a bandit but the boar code below it will not when collided with a boar.
...ANSWER
Answered 2020-Sep-18 at 22:30The reason why it doesn't work is because your program looks and says "yes i hit an object with the tag enemy" checks the next line trys to fetch the bandit script or whatever one is on top then if lets say bandit script is first it will come up empty and will never make it to the boar script it will only ever work with whichever is on top if you have two objects with the same tag and different scripts
Give each enemy a different tag. Then write something like --
QUESTION
I have a simple table set up with a generator above it that varies in text lengths. Every so often I get an extra line and that shifts my table down. Is there any way I could keep my table fixed in one position?
Please ignore the Javascript and only look at CSS and HTML, specifically the sections related to ButtonSection and the Table. Thanks
...ANSWER
Answered 2020-May-02 at 08:29You could try and wrap the text that varies in length in a div element and fix it's height, so that the longest text doesn't move the table.
In your html:
QUESTION
I am trying to plot two plots next to each other in python, one a linear result of the experiment and one a logarithmic transformation. The goal would be to place the plots next to each other similar to par(mfrow=c(1,2))
in R .
ANSWER
Answered 2020-Apr-01 at 06:29As @JohanC pointed out in the comments, you are confusing the syntax of plt.subplots()
and plt.subplot()
. The line
QUESTION
I am currently reading Reinforcement Learning: An Introduction (RL:AI) and try to reproduce the first example with an n-armed bandit and simple reward averaging.
Averaging
...ANSWER
Answered 2019-Sep-20 at 20:23In the formula for the update rule
QUESTION
I have the directory.conf
:
ANSWER
Answered 2019-Sep-05 at 21:45To add numbering from the second level down you must also add the
QUESTION
So there is a first window for the user to log into. Once the user has logged in they can start the game by clicking the "continue" button. The command of this button is set to the function con which should close the window using the window.destroy() function however whenever I try to click it I always receive an error stating "window is not defined"
...ANSWER
Answered 2019-Mar-23 at 19:06this will work with the login button,,,, i sent the window with the login function
here i added the window to the function
QUESTION
golang beginner here.
I want to unmarshall some JSON shown here:
...ANSWER
Answered 2019-Jan-05 at 05:05For marshalling and unmarshalling, fields must be exported.
QUESTION
I'm a total beginner trying to write code to roll on a series of branching d100 tables (the results of the first table determine which table is rolled on next, and so on).
I've gotten it to work by writing it all as one function, but because I'd like to loop a particular table several times while still referencing the results of the previous table, I'd like to do it as a series of nested functions.
The issue I'm running into is that if I nest the same code that worked as one function into a function within the parent function, EDIT: yearResults
is now being written to the HTML but monthResults
is coming back as undefined
Is there a way I can make this work? Is this a stupid way to go about trying to achieve this? Thank you for your help.
...ANSWER
Answered 2018-Dec-31 at 21:49Your conditions are wrong:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install bandits
You can use bandits like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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