An abstract and often simplified conceptual representation of the workings of a system of objects in the real world, which often includes mathematical or logical objects and relations representing the objects and relations in the real-world system, and constructed for the purpose of explaining the workings of the system or predicting its behavior under hypothetical conditions; as, the administration's model of the United States economy predicts budget surpluses for the next fifteen years; different models of the universe assume different values for the cosmological constant; models of proton structure have grown progressively more complex in the past century.
a small but exact copy of something; a pattern or figure of something to be made
A schematic or diagram that describes a structure, as well as the individual elements and their relationships.
A Model is a representation of a database table. Controllers interact with Models to get stuff to and from the database.
any paperfold at any stage in the folding process or after the folding has been completed. The use of the word model to describe a paperfold does not imply that the design is representational.
A mathematical system that represents or expresses the functional behavior of a real system.
a representation used as a surrogate for some real thing, for the purpose of testing, modifying, presenting, etc.
A mathematical formula used to calculate the theoretical value of an option. See also Black-Scholes formula
(noun) a representation which uses physical objects or drawings and their actual manipulation to illuminate concepts or problems
One or more diagrams representing the knowledge to be used for further reasoning about your company’s activities.
A model may be defined as a selected simplified version of a real system, and phenomena that take place within it, which approximately simulates the system' excitation-response relationships that are of interest.
A way of estimating what has happened or predicting what might happen in the real world. Models generally are made up of mathematical formulas that a computer analyzes rapidy. Models are used to estimate dose from radioactive releases that occurred in the past because it is rare to find actual measurements of doses to people offsite. Calculating radiation dose estimates for Hanford requires computer models because of the many factors that may have affected exposure and dose. These include the amount of iodine-131 Hanford released on a given day, the weather, and the wind speed and direction.
A representation of a complex, real-world phenomenon designed to help understand questions about that phenomenon.
A set of rules and procedures that represent a view of reality for conducting spatial analysis to generate a result.
An explanation of the way in which a system operates. A model is often represented by a mathematical equation or diagram. There are three main types of model - black box, static display and dynamic.
A way of looking at reality, usually for the purpose of abstracting and simplifying it to make it understandable in a part icular context. [D01041] OTOB 271-4 A schematic description of a system, theory, or phenomenon that accounts for its known or inferred properties and may be used for further study of its characteristic [D01040] VPM 19 A reduced representation of the real thing. Used to investigate some sort of risk. User requirements, technical feasibility, physical fit, field operation, interface complex ity, etc. [D04147] CSM
a system of hypothetical principles that represents the characters of a phenomenon and from which predictions can be made.
a representation of some business activity or system that allows changes to be tested on the model instead of on the actual system.
The part of the software system that does the mathematical/physical calculations.
Approximate representation or simulation of a system being studied.
A system that describes or predicts an associated process based on the definition of variables, rules and equations. A properly-defined model enables analyzing the possible effects of changes in the underlying process based on changes in the model.
(1) A small copy of an existing object. (2) A preliminary representation of something. (3) A pattern.
Something that is used as the foundation for a similar idea or process.
A [verb] and a noun. [Generate] a mathematical representation (e.g., number, graph, matrix, equation(s), geometric figure) for real world or mathematical objects, properties, actions, or relationships.
Term for describing a (finite element) construction for simulation of flow and/or transport phenomena in a defined area.
A stylized simplification of reality in which behavior is represented by variables and assumptions about how they are determined and interact. Models enable one to think consistently and logically about complex issues, to work out how changes in an economic system matter, and (sometimes) to make predictions about economic performance.
A simplified replication of reality which aids understanding and/or prediction.)
Mathematical relationship which relates changes in a given response to changes in one or more factors.
Representation of reality (the real world) which can be displayed, analyzed, and manipulated.
Collection of Objects constructed by user using the MB application tool to build sound and/or communications simulation of their application. Models are run within the MB application environment on the DACS. Each model is associated with a specific DSP card. One or more Models may reside on DACS depending on the hardware configuration. Models can interact locally to the DACS or across the network with other DACS models.
A theoretical representation of a system used to predict changes under the influence of various factors. Meagher, 1991
noun: scientifically based computer calculations that simulate physical or physiological phenomena. verb: to execute a set of scientifically based calculations to simulate physical or physiological phenomena.
Mathematical representation of distributions of variables and relationships between variables, and between parameters.
A pattern, example or description of how something works.
A model is a representation of something, either as a physical object which is usually smaller than the real object, or as a simple description of the object or idea which might be used in calculations.
Experimental or mathematical simulation of chemical behaviour in a specific environment. (ASTM, 1984)
Simplified version of what occurs in reality; highlights the important elements in the subject of interest.
Kepler and Newton laws are models of the real world. These are very good models due to their predictive power. Mathematical biologists derive equations (create models) of population growth and spread of epidemics. Mathematical economist create models that describe some aspects of and help study real world economy. Modeling being so important, there is of course the Model Theory. It's a general theory of interpretations of axiomatic systems. A hyperbolic (non-euclidean) geometry can be modeled in a circle of the regular euclidean geometry. This implies independence of the Axiom of Parallels (the Fifth Postulate) from the rest of the euclidean axioms.
A quantitative and mathematical representation or simulation which attempts to describe the characteristics or relationships of physical events. Also called mathematical model.
(1) Mathematical model. A mathematical representation of a natural system intended to mimic the behaviour of the real system, allowing description of emphirical data, and predictions about untested states of the system. (2) Biological model. A condition or disease in animals similar to the condition or disease in human beings.
Term used to describe the in-game representation of players. In 3D games, player models are comprised of many polygons, on top of which are superimposed textures for detail.
A model is an abstract representation of a system which enables users to make testable predictions about what happens to a system in different situations.
SafeRent's screening solution uses a statistical model to predict how potential residents will perform. When you screen an applicant, the information you enter is compared to tens of thousands of real resident histories. SafeRent Applicant Screening then calculates a score that helps you assess the potential performance and risk of the applicants.
A representation of a set of components of a process, system, or subject area, generally developed for understanding, analysis, improvement, and/or replacement of the process [GAO]. A representation of information, activities, relationships, and constraints [Treasury Enterprise Architecture Framework].
Computer-generated 3D object simulating some real target, in RenderWare or TrueSpace format
To represent or show mathematical ideas and relationships and real-world situations using objects, pictures, graphs, tables, functions, and other methods.
A theory based on assumptions that simplify and abstract from reality and from which predictions or conclusions about the real world are deduced.
A mathematical approximation or simulation of a real system, process, or object that omits all but the most essential variables, developed to understand its behavior or to make predictions. The representation always involves certain simplifications and assumptions. ()
A structure and corresponding interpretation that summarizes or partially summarizes a set of data, for description or prediction. Most inductive algorithms generate models that can then be used as classifiers, as regressors, as patterns for human consumption, and/or as input to subsequent stages of the KDD process.
a physical, mathematical, or otherwise logical representation of a system, entity, phenomenon, or process.
Graphical representation of any item of business significance in the R/3 System. Together, all models for all of the business applications included as standard are referred to as the R/3 Reference Model.
A representation of design elements to facilitate analysis and understanding
A computer system comprised of mathematical formulas to help marketers locate their best prospects or forecast sales.
A software representation of a real situation or system which can be used for analysis of its operation. A simplified version of a process. Examples of models include: financial budgets with variable costs and profits, journey planning between geographical points using roads available, queues at checkout desks and the number of people waiting, traffic lights controlled by numbers of vehicles and pedestrians, producing a three-dimensional model of a building to investigate environmental effects on nearby surroundings, pilot simulation etc.
A climate model is a method of simulating the behaviour of the climate, to give us a picture of past climates, and to predict future climate change. The basic laws and other relationships necessary to model the climate are expressed as a series of mathematical equations. The climate however, is a very complex system, and climate models require supercomputers to calculate the complicated interactions between landforms, atmosphere and emotions.
1. An abstraction of reality. Models can include a combination of logical expressions, mathematical equations, and criteria that are applied or the purpose of simulating a process, predicting an outcome, or characterizing a phenomenon. The terms modeling and analysis are often used interchangably, although the former is more limited in space. 2. Data representaion of reality (e.g., spatial data models include the arc-node, georelational model, rasters or grids, and TINs).
A representation of something, helpful in thinking about reality without having to deal with every detail of reality.
A representation, either graphic, narrative, or a combination of both, of a physical or conceptual environment. A model must identify the major components of the environment, describe those components in terms of their major attributes, and depict the relationships between the components and the conditions under which the components exist and interact with each other.
View of a system, typically captured in a diagram, using a set of notations.
A representation of a thing from which analysis provides approximate answers to designated questions about the thing itself.
A representation of a complex, real-world phenomenon such that it can answer questions about the real-world phenomenon within some acceptable and predictable tolerance.
3D Entity that can represent a part or the whole of an object. The representation can as well be done by a patch, a mesh, a parametric surface, etc and can include a texture.
A visual, mathematical, or three-dimensional representation in detail of an object or design, often smaller than the original. A model is often used to test ideas, make changes to a design, and to learn more about what would happen to a similar, real object.
Is a physical representation which is used to explain a physical phenomena.
A series of complex physics equations, used to calculate future weather. All models start with current weather data at the time and calculate from that starting point.
A representation of a problem or subject area that uses abstraction to express the relevant concepts. A model is often a collection of schema and other documentation.
A prototype. It can be a physical model or a computer based model. One can model a system or a product or a process or It is often used in simulations to represent components together of the system. Simple models can easily be used as "what if Models by inputting different sets of data and comparing the results. Monitoring - attempts to identify technology in its embryo stages, as well as to recognize signals that will influence its direction. The forecaster than allows the appropriate phenomena in order to determine the rate of progress and the true character of the impact, James A Bright, "Practical Technology Forecasting." ()
an abstraction or simplification of a natural phenomenon developed to predict a new phenomenon or to provide insight into existing ones.
limited representation of something suitable for some purpose NOTE A model can be data, or a data model, or a combination of these. See Annex D of ISO 18876-2 for further discussion of the relationship between models, data, and data models.
a representation, often on a small scale, of a proposed structure; simplified description or plan of a system or design to assist calculations and predictions
Any physical forms, whether in writing (e.g., tables, charts, flow diagrams), mathematical symbols, diagrams, or three-dimensional structures, that are used as a simplified analogy for some aspect of phenomena about which we are gathering information. Examples of models include diagrams, maps, model cars, airplanes, houses, or other structures. Some nutrition researchers use plastic models of foods as examples or memory aids when interviewing people about their food intakes.
Refers to either CRiSP.1 or some other mathematical representation of a process.
A formal set of relationships that can be manipulated to test assumptions. A simulation that tests the number of units that can be processed each hour under a set of conditions is an example of a model. Models do not need to be graphical.
simplified representation of reality
a simulation, by descriptive, statistical or other means, of a process or project that is difficult or impossible to observe directly.
an approximation, representation, or idealization of selected aspects of the structure, behavior, operation, or other characteristics of a real-world process, concept, or system. Note: Models may have other models as components [ IEEE 90].
Representation of reality useful for explaining concepts and providing a rational basis for decisions
A mathematical representation of the molecular machinery that is thought to carry out some interesting physiological behavior of an organism. For example, the molecular mechanism that generates 24 hour rhythms, or that mechanism that relays signals from hormone binding on the cell surface to altered gene expression in the cell's nucleus.
A model is defined as A representation of a physical system or process intended to enhance our ability to understand, predict, or control its behavior. (AIAA G-077-1998) conceptual model for CFD consists of the observations, mathematical modeling data, and mathematical (partial differential) equations that describe the physical system. It also includes initial and boundary conditions. The computational model is the computer program or code that implements the conceptual model. This may be finite-difference, finite-volume, finite-element, or other type of discretization. It includes the algorithms and iterative strategies. Parameters for the computational model include the number of grid points, algorithm inputs, and similar parameters.
A mathematical formula that represents the activity and the interactions within a system so that the system may be evaluated according to various conditions: land use, population, households and employment (socio-economic), transportation, or others.
A computer-based description and representation of a three-dimensional object. Models can be created with modeling software tools, 3D digitizers, and so on.
A representation of reality used to simulate a process, understand a situation, predict an outcome, or analyze a problem.
(1) A scaled reproduction or representation of an entity, treatment process, or environmental domain. (2) A series of mathematical equations approximating a real situation.
To make or construct a physical or mathematical representation.
Simulations or prototypes. Models range from an equation, to a sketch, to a full size product.
hypothesis of how a population functions; often uses mathematical descriptions of growth, recruitment and mortality.
a set of assumptions and data used by economists to study an aspect of the economy and make predictions about the future or about the consequences of various policy changes
A representation of a process or system that attempts to relate the most important variables in the system.
A representation of some aspect of external reality in a program.
a device which represents an approximation of a field situation. Models can be physical, analytical or numerical. A physical model is a physical representation of a larger, more complex system. Examples of physical models are Darcy's cylinder filled with sand and water and the sand and plexiglass ground-water flow model. An analytical model is a mathematical representation of a physical system which can be solved using analytical methods. Analytical models are highly dependent upon simplifying assumptions. A numerical model is a discretized representation of a physical system which is solved iteratively using a computer. Numerical models are less dependent upon simplifying assumptions but are highly data and computation-intensive. Numerical models have the advantage of enabling representation of different areas of the physical system using different physical properties. (Anderson and Woessner, 1992)
A mathematical representation of a process; specifically with regard to pharmacokinetics; drug and metabolite absorption, distribution, metabolism and excretion. Can be expresed a scheme or diagram, differential equation and usually integrated equations.
A collection of algorithms which digitally simulate the dynamics of a groundwater flow system.
Any representation of a real object or phenomenon, or template for the creation of an object or phenomenon.
Geophysical theory and applications generally have to assume that the geology of the earth has a form that can be easily defined mathematically, called the model. For example steeply dipping conductor s are generally modeled as being infinite in horizontal and depth extent, and very thin. The earth is generally modeled as horizontally layered, each layer infinite in extent and uniform in characteristic. These models make the mathematics to describe the response of the (normally very complex) earth practical. As theory advances, and computers become more powerful, the useful models can become more complex.
Simplified representation of natural phenomena. Models can be manipulated and used as tools to make predictions or test hypotheses.
a representation or simulation of something that cannot be directly observed
A mathematical or heuristic description of a physical, chemical, biological, geological or socioeconomic process, which can be prognostic (forecasting) or diagnostic (analytical).
A representation of a set of essential elements of a process, system, or subject area. A model is generally developed for understanding, analysis, improvement, and/or replacement of the process.
A simplified representation or abstraction (for example, of a process, activity, or system) intended to explain its behavior.
Graphic representation of a set of components of a process, system, data. A model is usually developed to facilitate understanding, communication, analysis, improvement, and/or replacement of the process.
A circulation model is any mathematical simulation used to forecast overall financials and circulation levels or revenue. Although most modeling today is done with computers, some companies still work models manually, with spreadsheets. List modeling is the practice of using statistical tools, such as regression analysis (see definition), to identify particularly good or poor prospects for the purpose of enhancing response.
A simplified representation of a system. (May be expressed as word, diagrammatic or mathematical form)
A mathematical formula designed to price an option as a function of certain variables-generally stock price, striking price, volatility, time to expiration, dividends to be paid, and the current risk-free interest rate. The Black-Scholes model is one of the more widely used models.
In fisheries science, a description of something that cannot be directly observed. Often a set of equations and data used to make estimates.
model is the actual data representation for the information at hand. Examples are the structural model and the style model representing the parse structure and the style information associated with a document. The model might be a tree, or a directed graph, or something else.
Mathematical description of physical behavior in the form of a set of (simplified) equations.
An equation, diagram or analogy that helps explain a scientific idea. Radioactivity
A description based on observed phenomena, often omitting certain details. A model may imply prediction. For example, if a direct mail model is formed it implies "This is what we think a direct mail customer looks like." The learner can change values and observe the effects of the change on the operation of the system. See also Classifier.
A representation of an object, process, behavior or attitude used by a learner for comparison/contrast and duplication/avoidance. Both positive and negative examples can serve as models.
An equation relating responses and predictors. A statistical model contains two parts: a model for the signal and a model for the noise, or error, associated with the signal. The model for the signal is an equation describing how the mean of the responses depends on certain predictor variables. The model for the noise, or error, describes the distribution of the deviations of responses from the signal.
An artifact that represents a part of a world at some level of abstraction that can be used to explain or predict features of the world that is being modeled.
Mathematical equations used to analyze quantities of data. Most of the models used in real estate appraisal are based on one of the three approaches to value.
A system of postulates, data, and inferences presented as a mathematical description of a phenomenon, such as an actual system or process. The actual phenomenon is represented by the model in order to explain, predict, and control it.
A model is a representation of an actual or conceptual system that involves mathematics, logical expressions, or computer simulations that can be used to predict how the system might perform or survive under various conditions or in a range of hostile environments.
in CAD use, a representation of some particular physical reality or realities (or planned objects) in computer form. The term is used in place of the simpler term drawing, because many drawings could be created from a CAD model. A 3D model is obviously too complex to be considered a drawing, since changing the point of view changes the drawing. A complex object drawn with multiple layers is also too complex to be considered a single drawing, even if it is a simple, 2D representation; changing the visible layers may change the drawing produced but not the model.
A prototype or surrogate of a complex situation. It can be a physical model, such as an architectural model of urban design, or a mathematical model of interactions of many variables. It is used in simulations for relating various components together or can be a stand alone tool to evaluate different approaches using different assumptions. Recent use of personal computer tools allows many types of software to effectively answer questions such as "what if I increase the growth rate"; these too are models.
representation of reality in a numeric format capable of being displayed and manipulated.
(1) Generalization of reality. System describing how a phenomenon functions. (3) Mathematical representation of a system from which predictions or inferences can be made.
A representation of an idea. This could be a physical model, such as a manipulative or a drawing.
Like metaphor, a model can be used to approximate a concept without being an absolute representation. Models can be used to help comprehend a conceptual innovation in the formative stages and provide a schematic simulation of what could be created.
A mathematical function with parameters that can be adjusted so the function closely describes a set of empirical data. A mechanistic model usually reflects observed or hypothesized biological or physical mechanisms, and has model parameters with real world interpretation. In contrast, statistical or empirical models selected for particular numerical properties are fitted to data; model parameters may or may not have real world interpretation. When data quality is otherwise equivalent, extrapolation from mechanistic models (e.g., biologically based dose-response models) often carries higher confidence than extrapolation using empirical models (e.g., logistic model).
A proportional representation of an object in any scale.
A mathematical description of real-life situations that uses data on past and present conditions to make future projections.
An accurate representation showing size and form of a part. Different types of models are used in different stages of the part development from preliminary design to final checking. Such models include clay models, plastic models, wood models, etc.
A tool for simulating or predicting the behavior of a dynamical system like the atmosphere. Models can be based on subjective heuristic methods, statistics ( see statistical dynamical model, model output statistics), numerical methods ( see numerical forecasting), simplified physical systems ( see dishpan experiments), analogy ( see analogs), etc. The term is now most commonly applied to numerical models.
A visual representation that illustrates or further explains a mathematical principle or concept.
To make or act out a representation of something, usually on a smaller scale or in a simpler way; to use pictures, diagrams, or physical objects to further demonstrate or clarify a problem.
A representation of a component or circuit.
programming: A graphic or mathematical representation of an idea, whether a scientific problem or a three-dimensional object. The earliest kinds of modeling were used for weather forecasting (and bomb blasts). In fact, these studies fostered the emergence of chaos theory. Graphic modeling is used to create architectural views and fantastic visual effects for Hollywood movies.
a representation of a real or imagined situation governed by certain rules which are managed by a computer program. The rules, or data can be changed by the user and the outcome of the changes viewed on the computer screen.
(1) A person that serves as a target subject for a learner to emulate. (2) A representation of a process or system that show the most important variables in the system in such a way that analysis of the model leads to insights into the system.
An important function of data mining is the production of a model. A model can be descriptive or predictive. A descriptive model helps in understanding underlying processes or behavior. For example, an association model describes consumer behavior. A predictive model is an equation or set of rules that makes it possible to predict an unseen or unmeasured value (the dependent variable or output) from other, known values (independent variables or input). The form of the equation or rules is suggested by mining data collected from the process under study. Some training or estimation technique is used to estimate the parameters of the equation or rules.
A physical model is used in various contexts to mean a physical representation of some thing. That thing may be a single item or object (for example, a bolt) or a large system (for example, the Solar System).
A model in macroeconomics is designed to simulate the operation of a national or international economy in terms of factors including the total amount of goods and services produced, total income earned, the level of employment of productive resources, and the general behavior of prices.