Actor model (computer science)

Actor model

The actor model in computer science is a mathematical model of concurrent computation that treats actor as the universal primitive of concurrent computation. In response to a message it receives, an actor can: make local decisions, create more actors, send more messages, and determine how to respond to the next message received. Actors may modify their own private state, but can only affect each other indirectly through messaging (removing the need for lock-based synchronization). The actor model originated in 1973. It has been used both as a framework for a theoretical understanding of computation and as the theoretical basis for several practical implementations of concurrent systems. The relationship of the model to other work is discussed in actor model and process calculi. (Wikipedia).

Video thumbnail

Star Trek Filming Miniature Model and Hand Props!

We can barely contain our excitement as we get up close with some original hand props and a gorgeous model miniature used in various 90s-era Star Trek series and films! From the iconic phaser and medical tricorder of The Next Generation to LCARS panels from Star Trek: Generations, this col

From playlist Costumes and Props

Video thumbnail

Human or Machine? The Incredibly Life-Like Android Robots From Japan

A new exhibition entitled "Android: What is Human?" launching tomorrow at the National Museum of Emerging Science and Innovation (Miraikan) in Tokyo will showcase some of the most realistic humanoid robots that have ever been seen.

From playlist Robots, AI, and human-machine interfaces

Video thumbnail

Sarah Bernhardt: The World's First Celebrity

Before social media and summer blockbusters, before even the concept of a “movie star,” one extraordinary woman created the blueprint for the stars of today. Without a single tweet, having never posted on instagram, the woman who has been described as “the world’s first celebrity” captiva

From playlist Art and history

Video thumbnail

ANATOMY FOR ARTISTS: Upper Leg Demonstrations

Upper Leg Demonstrations with redacted figure models.

From playlist ANATOMY FOR ARTISTS

Video thumbnail

Ironhead Collectibles’ Striking Character Masks!

Ironhead Studio, the makers of specialty costumes and superhero suits for some of our favorite films, has started a collectibles line of striking character masks. We chat with Ironhead’s Jose Fernandez about the sculpting and paint finish of these masks, the artists he’s working with for t

From playlist Toys, Models and Collectibles

Video thumbnail

Your Face Didn't Begin in Your Face

When you were an embryo, a parade of molecules sculpted the cells that became your face. NOVA Facebook: https://www.facebook.com/NOVAonline NOVA Twitter: https://twitter.com/novapbs PRODUCTION CREDITS Video & Audio Production Ari Daniel Recording Assistance Brooke Havlik Production As

From playlist Original shorts

Video thumbnail

Model Theory - part 01 - The Setup in Classical Set Valued Model Theory

Here we give the basic setup for Model Theory. I learned this from a talk Tom Scanlon gave in 2010 at CUNY.

From playlist Model Theory

Video thumbnail

"Honey, I shrunk Brad Pitt!"

Scientists of the Max Planck Institute for Informatics in Saarbrücken present a system for quick and easy manipulation of the body shape and proportions of a human actor in arbitrary video footage. The approach is based on a morphable model of 3D human shape and pose. Once the model has be

From playlist Most popular videos

Video thumbnail

Imagining Future Fashion with Sixth-Scale Figure Design

We're always on the lookout for original creative designs, and the figures of Bryan Lie (aka IMCPLX) are striking not only for the character work, but the attention to detail in these sixth-scale figures' clothing. We chat with Bryan about how he uses these figures to experiment with forwa

From playlist Toys, Models and Collectibles

Video thumbnail

The Blessings of Multiple Causes - David M. Blei

Seminar on Theoretical Machine Learning Topic: The Blessings of Multiple Causes Speaker: David M. Blei Affiliation: Columbia University Date: January 21, 2020 For more video please visit http://video.ias.edu

From playlist Mathematics

Video thumbnail

The Next Big Thing In Software Architecture

What could help us to build even better, even more complex systems? What comes next? What’s on the horizon that may be the next big step? Software development is always changing. The public cloud is only 15 years old but has changed how a lot of software is developed and our assumptions of

From playlist Software Engineering

Video thumbnail

LambdaConf 2015 - Building Concurrent, Fault Tolerant, Scalable Applications in F# using Akka Net

By, Riccardo Terrell Writing correct concurrent, fault-tolerant, scalable applications is no simple task. The struggle is generally the result of using the wrong tools or wrong level of abstraction. The Actor based concurrency model aims to simplify this process. The actor model is a mathe

From playlist LambdaConf 2015

Video thumbnail

Statistical Rethinking Winter 2019 Lecture 16

Lecture 16 of the Dec 2018 through March 2019 edition of Statistical Rethinking: A Bayesian Course with R and Stan. Covers multilevel models, non-centered parameterization.

From playlist Statistical Rethinking Winter 2019

Video thumbnail

Everything You Need To Master Actor Critic Methods | Tensorflow 2 Tutorial

In this brief tutorial you're going to learn the fundamentals of deep reinforcement learning, and the basic concepts behind actor critic methods. We'll cover the Markov decision process, the agent's policy, reward discounting and why it's necessary, and the actor critic algorithm. We'll im

From playlist Get Started with Actor Critic and Policy Gradient Methods

Video thumbnail

Statistical Rethinking 2022 Lecture 14 - Correlated Varying Effects

Slides and other course materials: https://github.com/rmcelreath/stat_rethinking_2022 Music: https://www.youtube.com/watch?v=TWu9VxVQ6Lg Owl: https://www.youtube.com/watch?v=VNcLbMYwhXQ Pause: https://www.youtube.com/watch?v=pxPdsqrQByM Chapters: 00:00 Introduction 01:22 Varying effects

From playlist Statistical Rethinking 2022

Video thumbnail

New Concurrency Models on the JVM: Fibres, Verticles, Agents and Actors. by Lutz Huehnken

Until recently, concurrency in Java meant: java.util.concurrent and threads. Threads were originally envisioned as "lightweight processes" - starting a new process for concurrent operations meant to much overhead, and posed the problem of inter-process communication. Threads were supposed

From playlist Software Development Lectures

Video thumbnail

Statistical Rethinking Fall 2017 - week08 lecture15

Week 08, lecture 15 for Statistical Rethinking: A Bayesian Course with Examples in R and Stan, taught at MPI-EVA in Fall 2017. This lecture covers Chapter 12. Slides are available here: https://speakerdeck.com/rmcelreath/statistical-rethinking-fall-2017-lecture-15 Additional informatio

From playlist Statistical Rethinking Fall 2017

Video thumbnail

Everything You Need to Know About Deep Deterministic Policy Gradients (DDPG) | Tensorflow 2 Tutorial

Deep Deterministic Policy Gradients (DDPG) is an actor critic algorithm designed for use in environments with continuous action spaces. This makes it great for fields like robotics, that rely on applying continuous voltages to electric motors. You'll get a crash course with a quick lecture

From playlist Deep Reinforcement Learning Tutorials - All Videos

Video thumbnail

The Making of Modern Star Trek Figures

As the Star Trek: Mission Chicago convention kicks off this weekend, we're visited in-studio by Exo-6, the makers of new one-sixth scale Star Trek figures from every series in the franchise. We chat with Exo-6's founder Schubert Tam about his direction and design for the company's figures,

From playlist Toys, Models and Collectibles

Related pages

Finite-state machine | Denotational semantics of the Actor model | Serialization | Lock (computer science) | Domain theory | Actor model and process calculi history | Operational semantics | Power domains | Logic programming | Nondeterministic finite automaton | Calculus of communicating systems | FIFO (computing and electronics) | Queue (abstract data type) | Actor model theory | Encryption | Gordon Pask | Lambda calculus | Concurrency control | Scala (programming language) | Actor model and process calculi | Π-calculus | Scalability | Scientific community metaphor | Erlang (programming language) | Automata theory | Akka (toolkit) | TNSDL | Janus (concurrent constraint programming language) | Indeterminacy in concurrent computation | Java virtual machine | Denotational semantics | Linear logic | Unbounded nondeterminism | Actor model implementation | Mutual exclusion | Two-phase commit protocol | Actor model later history | Mathematical model | Semaphore (programming) | Communicating sequential processes | Dart (programming language) | Stack machine | Common Language Runtime | Digital signature | Petri net | Monitor (synchronization)