Full Answer
What is the blackboard pattern in software engineering?
Introduction. The Blackboard pattern is a design pattern, used in software engineering, to coordinate separate, disparate systems that need to work together or in sequence, continually cycling for updates and actions.. The blackboard consists of a number of stores or "global variables". This is similar to a repository of messages, which can be accessed by separate …
What is the first step in the blackboard design process?
What is a blackboard controller?
What is the observer design pattern?
Which design pattern is also known as a blackboard?
In software engineering, the blackboard pattern is a behavioral design pattern that provides a computational framework for the design and implementation of systems that integrate large and diverse specialized modules, and implement complex, non-deterministic control strategies.
What is blackboard Architecture?
The blackboard architecture is a flexible and powerful expert system framework. It represents a general approach to problem solving that is useful in many domains of applications especially in the area of intelligent control.
What are the main components of Blackboard pattern?
A blackboard system consists of three components: 1) Knowledge sources (KSs); 2) Blackboard; 3) Control component. Knowledge sources are independent modules that contain the knowledge needed for problem solving.
What are the advantages of blackboard architecture?
Advantages of Blackboard Architecture Style Blackboard architecture style provides concurrency which allows knowledge sources to work in parallel. This architecture supports experimentation for hypotheses and reusability of knowledge source components.
What is repository architecture explain with example?
A repository architecture consists of a central data structure (often a database) and a collection of independent components which operate on the central data structure Examples of repository architectures include blackboard architectures, where a blackboard serves as communication centre for a collection of knowledge ...
What is blackboard PDF?
Blackboard is a Web-based course-management system designed to allow students and faculty to participate in classes delivered online or use online materials and activities to complement face-to-face teaching. ... In contrast, other courses may be conducted entirely through Blackboard, without any on-campus sessions.
What is pipe and filter architecture?
The Pipe and Filter is an architectural pattern for stream processing. It consists of one or more components called filters. These filters will transform or filter data and then pass it on via connectors called pipes.
Which of the following methods is based on the blackboard architecture?
A blackboard system is an artificial intelligence approach based on the blackboard architectural model, where a common knowledge base, the "blackboard", is iteratively updated by a diverse group of specialist knowledge sources, starting with a problem specification and ending with a solution.
What means software architecture?
Software architecture refers to the fundamental structures of a software system and the discipline of creating such structures and systems. Each structure comprises software elements, relations among them, and properties of both elements and relations.
What is repository architectural style?
In Repository Architecture Style, the data store is passive and the clients (software components or agents) of the data store are active, which control the logic flow. The participating components check the data-store for changes. The client sends a request to the system to perform actions (e.g. insert data).
What is pipes and filter style?
What is the Pipe and Filter style? The Pipe and Filter is an architectural design pattern that allows for stream/asynchronous processing. In this pattern, there are many components, which are referred to as filters, and connectors between the filters that are called pipes.
What is batch sequential style?
Explanation: In batch sequential style- In batch sequential components are independent programs, Assumptions is that each step runs to completion before the next step starts.
Overview
- The blackboard pattern allows multiple processes to work closer together on separate threads, polling and reacting if needed.
Structure
Implementation
Applications
In software engineering, the blackboard pattern is a behavioral design pattern that provides a computational framework for the design and implementation of systems that integrate large and diverse specialized modules, and implement complex, non-deterministic control strategies.
This pattern was identified by the members of the HEARSAY-II project and first applied to speech recognition.
Consequences
The blackboard model defines three main components:
• blackboard - a structured global memory containing objects from the solution space
• knowledge sources - specialized modules with their own representation
• control component - selects, configures and executes modules.
See also
The first step is to design the solution space (i.e. potential solutions) that leads to the blackboard structure. Then, knowledge sources are identified. These two activities are closely related.
The next step is to specify the control component; it generally takes the form of a complex scheduler that makes use of a set of domain-specific heuristics to rate the relevance of executable knowledge sources.
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