(1) ESTEREL is a synchronous programming language for developing reactive systems. It is based on the idea that reactions are instantaneous and atomic.
(2) The language allows programming reactive systems as collections of parallel components that communicate instantly via signal broadcast. This instantaneous broadcast is deterministic.
(3) ESTEREL programs can be compiled into finite state machines, efficiently representing the synchronous reactions. This enables efficient execution and use in applications like hardware circuit design.
Antescofo Syncronous Languages for Musical Composition nazlitemu
Antescofo is a syncronous language that is composed of some properties that Esterel and Lustral Languages..
Antesfoco is a project that is dedicated to generate intelligent contribution of the computers to the live music syntesis.
SEMANTIC STUDIES OF A SYNCHRONOUS APPROACH TO ACTIVITY RECOGNITIONcscpconf
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Antescofo Syncronous Languages for Musical Composition nazlitemu
Antescofo is a syncronous language that is composed of some properties that Esterel and Lustral Languages..
Antesfoco is a project that is dedicated to generate intelligent contribution of the computers to the live music syntesis.
SEMANTIC STUDIES OF A SYNCHRONOUS APPROACH TO ACTIVITY RECOGNITIONcscpconf
Many important and critical applications such as surveillance or healthcare require some formof (human) activity recognition. Activities are usually represented by a series of actions driven and triggered by events. Recognition systems have to be real time, reactive, correct, complete, and dependable. These stringent requirements justify the use of formal methods to describe, analyze, verify, and generate effective recognition systems. Due to the large number of possible application domains, the researchers aim at building a generic recognition system. They choose the synchronous approach because it has a well-founded semantics and it ensures determinism and safe parallel composition. They propose a new language to represent activities as synchronous automata and they supply it with two complementary formal semantics. First a behavioral semantics gives a reference definition of program behavior using rewriting rules. Second, an equational semantics describes the behavior in a constructive way and can be directly implemented. This paper focuses on the description of these two semantics and their relation.
This APP for Android phone is an educational purposes only, as it has several limitations regarding practical application. However, it was a resource for my students who were unable to study this programming language on a computer or notebook. Therefore, I leave here a contribution of a small booklet that I developed for my students about this APP and that can help other people.
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Material for this slide includes:
1. Description of effect handlers and their types
2. Description of side effects and their examples
3. Description of animations and their APIs in Jetpack Compose
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T. Gokul - UG Scholar,
Department of Electronics and Communication Engineering,
SNS College of Engineering, Coimbatore, India.
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very large. Several techniques for reducing the number of rules have been proposed as
measures of quality, syntactic filtering constraints, etc. However, these techniques do not limit
the shortcomings of these methods. In this paper, we propose a new approach to mine
association, assisted by a Boolean modeling of results in order to mitigate the shortcomings
mentioned above and propose a cellular automaton based on a boolean process for mining,
optimizing, managing and representing of the learned rules.
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Using Learning Automata in Coordination Among Heterogeneous Agents in a Compl...Waqas Tariq
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- No cache
- Multiple cores allow concurrent independent task execution
- Hardware scheduler performs 'RTOS-like' functions
This paper is focused on developing a platform that
helps researchers to create verify and implement their
machine learning algorithms to a humanoid robot in real
environment. The presented platform is durable, easy to fix,
upgrade, fast to assemble and cheap. Also, using this platform
we present an approach that solves a humanoid balancing
problem, which uses only fully connected neural network as a
basic idea for real time balancing. The method consists of 3
main conditions: 1) using different types of sensors detect the
current position of the body and generate the input
information for the neural network, 2) using fully connected
neural network produce the correct output, 3) using servomotors make movements that will change the current position
to the new one. During field test the humanoid robot can
balance on the moving platform that tilts up to 10 degrees to
any direction. Finally, we have shown that using our platform
we can do research and compare different neural networks in
similar conditions which can be important for the researchers
to do analyses in machine learning and robotics.
Ubiquitous computing described in the domain of Computer Vision and how these two concepts can be deployed in IoT. Why future integrity is necessary to achieve a better technology for the future world.
"Bugünün Teknolojisi ve Korkusuz Makinelerin Yarını!"
"Today's Tech versus Brave Machine's Tomorrow !"
Yarının güvenli geleceğini inşa etmek için ihtiyacımız olan makine felsefesi nedir sizce? Bu konuşmamda Bilgisayar Görüsü'nün kilit taşı olacağı çözümlerden bahsedeceğiz. Günümüz tekniklerini ve bu tekniklerin sınırlarını inceleyeceğiz.
Today's Tech versus Brave Machine's Tomorrow !
What kind of machine philosophy do we need to build safe future of tomorrow? We will talk about proposals of computer vision as future's keystones. By examining today's pain points and limitations we will try to derive tomorrow's technologic boundaries.
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This APP for Android phone is an educational purposes only, as it has several limitations regarding practical application. However, it was a resource for my students who were unable to study this programming language on a computer or notebook. Therefore, I leave here a contribution of a small booklet that I developed for my students about this APP and that can help other people.
Mobile Programming - 7 Side Effects, Effect Handlers, and Simple AnimationsAndiNurkholis1
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2. Description of side effects and their examples
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Department of Electronics and Communication Engineering,
SNS College of Engineering, Coimbatore, India.
Mining association rules is one of the most important data mining tasks. Its purpose is to
generate intelligible relations between attributes in a database. However, its use in practice is
difficult and still raises several challenges, in particular, the number of learned rules is often
very large. Several techniques for reducing the number of rules have been proposed as
measures of quality, syntactic filtering constraints, etc. However, these techniques do not limit
the shortcomings of these methods. In this paper, we propose a new approach to mine
association, assisted by a Boolean modeling of results in order to mitigate the shortcomings
mentioned above and propose a cellular automaton based on a boolean process for mining,
optimizing, managing and representing of the learned rules.
This presentation talks about Real Time Operating Systems (RTOS). Starting with fundamental concepts of OS, this presentation deep dives into Embedded, Real Time and related aspects of an OS. Appropriate examples are referred with Linux as a case-study. Ideal for a beginner to build understanding about RTOS.
Using Learning Automata in Coordination Among Heterogeneous Agents in a Compl...Waqas Tariq
This paper describes our use of Learning Automata as a reinforcement learning method in coordination among three heterogeneous teams of agents acting in RoboCup Rescue Simulation environment. We provide a brief introduction to Learning Automata and Cellular Learning Automata, the reinforcement machine learning methods that we have used in lots of parts of our agents’ development. Then we will describe the major challenges each team of agents should be concerned about in such a complex domain and for each challenge, we propose our approaches to develop cooperative teams. Finally, some results of using Learning Automata in coordinating these heterogeneous teams of agents that cooperate to mitigate the disastrous damages in a simulated city are evaluated.
Benchmark methods to analyze embedded processors and systemsXMOS
xCORE multicore microcontrollers are 100x more responsive than traditional micros. The unparalleled responsiveness of the xCORE I/O ports is rooted in some fundamental features:
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- No interrupts
- No cache
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- Hardware scheduler performs 'RTOS-like' functions
This paper is focused on developing a platform that
helps researchers to create verify and implement their
machine learning algorithms to a humanoid robot in real
environment. The presented platform is durable, easy to fix,
upgrade, fast to assemble and cheap. Also, using this platform
we present an approach that solves a humanoid balancing
problem, which uses only fully connected neural network as a
basic idea for real time balancing. The method consists of 3
main conditions: 1) using different types of sensors detect the
current position of the body and generate the input
information for the neural network, 2) using fully connected
neural network produce the correct output, 3) using servomotors make movements that will change the current position
to the new one. During field test the humanoid robot can
balance on the moving platform that tilts up to 10 degrees to
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Yarının güvenli geleceğini inşa etmek için ihtiyacımız olan makine felsefesi nedir sizce? Bu konuşmamda Bilgisayar Görüsü'nün kilit taşı olacağı çözümlerden bahsedeceğiz. Günümüz tekniklerini ve bu tekniklerin sınırlarını inceleyeceğiz.
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2. What is ESTEREL ?
Small Terminology
Where we use ESTEREL ?
Underlying Model and Basic Features
Simple - Sample Program
Conclusion - Q&A
CONTENT
3. WHAT IS ESTEREL ?
Esterel is a synchronous programming language for the
development of complex reactive systems.
4. SYNCHRONIZATION TERMINOLOGY
The idea that multiple processes are to join up or handshake at
a certain point,
in order to reach an agreement or commit to a certain
sequence of action
5. As the name suggests Synchronous Motors are capable of
running at constant speed irrespective of the load acting on them.
The term sun synchronous means that the section monitored by
the satellites is always radiated by the sun in the same way.
//Always at a specific local time.
SYNCRONOUS ?
6. (1) Transformational systems (take some inputs, process them, deliver their outputs, and
terminate their execution //Compiler
(2) Interactive systems (interact continuously with their environment, at their own speed
// the Web
(3) Reactive Systems ( interact continuously with their environment, at a speed imposed
by the environment
// Automatic flight control system of modern airplanes. [Real-time Systems]
REACTIVE SYSTEMS? WHERE TO USE
7. When activated with an input event, a reactive system reacts by producing an output
event.
A real-time system is one that produce a response within a specified time, else risk
severe consequences, including failure.
That is, in a system with a real-time constraint it is no good to have the correct action
or the correct answer after a certain deadline.
REACTIVE SYSTEMS?
9. The development of the language started in the early 1980s, and was mainly
carried out by a team of Ecole des Mines de Paris and INRIA led by Gérard
Berry.
Motivations behind ESTEREL can be summed up by the
ESTEREL = reactivity
+ atomicity of reactions “perfect synchrony hypothesis,”
+ instantaneous broadcast
+ determinism
UNDERLYING MODEL
10. REACTIVITY
When activated with an input’event, a reactive system reacts by producing an output event.
Reactive systems are seen as “black boxes” that must be activated from outside in order to react;
They have input lines to receive input events from the outside, and output lines to produce output
events.
The life of a reactive system is divided into instants that are the moments //external clock//
where it reacts.
11. ATOMICITY OF REACTIONS
The basic hypothesis of ESTEREL is called the perfect synchrony hypothesis: it says that reactions
are instantaneous so that activations and productions of output are synchronous,
A reactive program is a function that produces a sequence of output events from a sequence of
input events.
Reactions are atomic, that is, program reactions cannot overlap.
In other words: there is no possibility to activate a system while it is reacting to the current
activation.
Hypothesis simplifies the reasoning about reactive systems as concurrency between reactions is
not to be considered.
Without the atomicity assumption, this concurrency would be a source of nondeterminism.
12. INSTANTANEOUS BROADCAST
Broadcast(Hand Raising) is limited to instants: the emission of a signal (using an emit statement) lasts
for the current instant.
ESTEREL broadcast has an important characteristic: emissions and receptions do no terminate the
current instant.
In other words, there can be several signal emissions and receptions in sequence within the same
instant.
This characteristic allows to program so called “instantaneous decisions” that are specific to
ESTEREL.
Hand Raising: when one wants to communicate, one raises its hand, so everybody can see.
13. Nondeterminism is completely thrown out of ESTEREL.
With traditional approaches, one has to choose between parallelism and
nondeterminism on one hand or determinism but sequentiality on the other
hand.
On the contrary, ESTEREL parallelism is deterministic.
Def : whose resulting behavior is entirely determined by its initial state and its
inputs which is not random.
DETERMINISM
14. HELLO WORLD! :)
The below program emits the output O as soon as both inputs A [HELLO] and B [WORLD!] have been received. Reset the
behavior whenever the input R is received.
module ABRO: // Programs consist of modules
input A, B, R; // inputs signals and
output O; // outputs signals
loop … each statement
implements the reset
await waits for the next cycle in
which its signal is present
|| operator means run the two
awaits in parallel
Parallel statements terminate
immediately when all branches
done.
Emit O makes signal O present
when A and B have both arrived
16. As a benefit of the formal approach,
ESTEREL programs can be compiled efficiently
into finite states machines and can generate
efficient code.
FINITE STATE STEPS
22. CONCLUSION
Separating a program into parallel components for better modularity
ESTEREL high level program that can be graphically simulated and proved using verification
systems;
It can be translated into several sequential languages and executed with great efficiency. But
it is difficult to compile.
However, ESTEREL can be useful in larger context when one has to produce several
automata that must cooperate.
Not an easy framework for checking causality but Scalability attractive for industrial users