User Tools

Site Tools



This shows you the differences between two versions of the page.

Link to this comparison view

Next revision
Previous revision
standard_specification_models [2011/10/20 22:32]
peter created
standard_specification_models [2018/02/15 12:29] (current)
Line 1: Line 1:
-===== Standard Specification Models ​===== +====== Modeling of product types ====== 
-===== 1. What is a standard specification model =====+====== 1. Universal search and data integration ======
-A standard specification is a specification ​of a type of product, or in general ​of kind of thingSuch specifications are standardised so that many individual ​things can be created ​that comply ​with those specificationsIn that sense the specifications can also be interpreted as requirements for the creation of individual things. The standard specifications may be company specific such as Best Practice Design Specifications or Buyers Standard Specifications or they may be published by industry consortia or national standardisation bodiessuch as ANSI, BSI, DIN or JIS or by international standardisation bodies, such as ISO and IEC.+Product types are manufacturer specific subtypes ​of general ​concepts. Therefore they are also called manufacturers models. Large facilities and specialized equipment is typically ​once-of designThis means that a model is made of an imaginary ​individual ​thing and that imaginary product is realized by making a materialized real object that corresponds ​with the designWhen series of products of the same kind are fabricated, then the design is usually generalized and given a product type identifiertypically ​as a product type code. The product type (the identifier) ​and its distinguishing characteristics are typically included in a product catalogue of the manufacturer or supplier.\\
-A standard specification model is not a [[:Product Modeling|product ​model about an individual object]] nor a model of a '​typical individual thing' or a prototypebut a standard specification model defines a kind of thing, whereas that kind is used in situations in which the specification is declared ​to be applicable.  +Nowadays ​product ​catalogues are usually made searchable via the websites ​of the suppliers. Howeverit is currently not possible ​to express one universal query that searches for product types in systems ​of multiple suppliers and that reports ​the combined results ​in one report. Neither is it possible ​to integrate ​selected resulting models directly in someones own models, such as in designsThis is caused by the fact that every manufacturer and supplier uses its own data structure, terminology and corresponding software for storage, searching and reporting.\\ 
-For example, many standards institutes provide standard specifications ​that specify that particular kinds of things shall satisfy ​the specification ​in those standards in order to ensure ​certain product qualitySometimes those institutes provide ​the possibility ​that products can be certified if they satisfy the specificationsStandard specification ​models ​are defined ​in Gellish ​in the same way as [[:​Requirements Models]]. They have similar structure as [[:​Knowledge modeling in Gellish|knowledge models]], but use other relation typesStandard specification models are collections of facts, each of which express either that something //shall be// the case or that something ​is //by definition// ​the case. This means that Gellish ​expressions will be used which phrases start with <shall be...> or <shall have...> or phrases that start with <is by definition...>​ or <has by definition...>​.+**Universal search**, combined reporting and direct integration of product type models in users models, becomes possible by modeling product types in a Gellish ​formal languageThis is demonstrated ​by the Gellish ​Communicator software.\\
-For more information on how to create ​Standard Specification Models ​in Gellish ​please contact Gellish@Work or use the Help forum of https://​​projects/​gellish/​forums.+ 
 +Models of product types are extended definition models in which the product types may by definition be composed of particular kinds of parts and/or in which a number of characteristics are defined to have specific values or a limited range of (distinct) values. Models of product types are thus collections of statements that express that some product type //has by definition as part a// particular kind and/or //has by definition as aspect a// kind of characteristic with a particular value. This means that Gellish expressions will be used which phrases typically start with <is by definition...>​ or <has by definition...>​. However, not all aspects of product types need to be specified completely, because there may still be some degrees of freedom (options) left open. For example, a product type may have a well defined form and material of construction,​ but the color of a product of such a type is a free choice. 
 +====== 2. Modeling of product types ====== 
 +Manufacturers models  
 +For more information on how to create ​product type models ​in Gellish ​see the book '​Semantic Information Modeling Methodology'​.
 **//​Continue with//** [[:Correct Gellish English]] **//​Continue with//** [[:Correct Gellish English]]
standard_specification_models.1319142730.txt.gz · Last modified: 2018/02/15 12:28 (external edit)