--- title: "Decision-making" source: "https://systems-analysis.info/eng/Decision-making" wiki: "systems-analysis.info/eng" article: "Decision-making" language: "en" categories: - "Category:Decision theory" - "Category:Decision-making" - "Category:English" - "Category:Operations research" - "Category:Science" - "Category:Systems analysis" revision_id: 111 wiki_created_at: 2026-09-06T22:17:32Z wiki_modified_at: 2026-09-06T22:17:32Z downloaded_at: 2026-09-07T22:21:06Z --- # Decision-making **Decision making** is the process of selecting one or more preferred options (alternatives) from a set of possible ones, aimed at resolving a [problem situation](https://systems-analysis.info/eng/Problem "Problem") by considering given [goals](https://systems-analysis.info/eng/Goal "Goal"), constraints, and conditions. The decision-making process involves the presence of: - a formalized or intuitive problem statement; - a set of alternatives (courses of action or solutions); - criteria for evaluating the options; - factors that impose constraints (physical, economic, technical, social, etc.); - a decision-maker—either an individual or a group—with the authority and responsibility for the outcome. ## Formal Methods of Decision Making Formal decision-making methods can be useful in the following cases: - There is a problem or a problem situation that needs to be resolved. Often, the desired result is identified with one or more goals that must be achieved to resolve the problem situation; - There are several options for solving the problem, ways to achieve the goal, actions, or objects from which to choose. In decision theory, these options are usually called alternatives. If there is only one possibility and no choice, then there is no decision-making task; - There are factors that impose certain constraints on the possible ways to solve the problem or achieve the goal. These factors are determined by the context of the problem being solved and can be of various natures: physical, technical, economic, social, personal, and others; - There is a person or a group of people who are interested in resolving the problem, have the authority to choose a particular solution, and are responsible for implementing the decision made. ## A Typical Scheme of the Decision-Making Process The problem-solving lifecycle consists of several stages and is a multi-step, iterative procedure. ### 1. Emergence of the Need for a Decision The need to make a decision arises when a problem situation occurs. In this case, the problem is identified, i.e., a substantive description of the problem is given, the desired outcome of its resolution is determined, and existing constraints are assessed. ### 2. Formulation of the Decision-Making Task In the next stage, the task is formulated. This requires defining the set of possible solutions (alternatives). Depending on the complexity of the problem, their number can range from a few to hundreds or even thousands. Theoretically, the set of options can be infinite. To describe all alternatives, it is usually necessary to collect and analyze information related to the problem and the ways to solve it. A lack of necessary data can make the problem unsolvable, leading to the need to return to previous stages or to reconsider the problem formulation itself. In complex situations, it may be necessary to create a special model (most often a mathematical one) that allows for simplifying and formalizing the problem in order to find its solution. It should be noted that a clear description of the problem in the first stage can significantly influence subsequent steps, and in some cases, lead directly to a formal task formulation, bypassing intermediate stages. ### 3. Search for and Selection of a Solution At this stage: - a solution method is chosen from known ones, or a new one is developed; - the possible alternatives are analyzed; - the best option is evaluated and selected. Sometimes this stage is straightforward, but more often it is labor-intensive and requires the involvement of specialists and the use of computing technology. However, even after all procedures, it is not always possible to select a final solution. There may be cases where: - the required option is missing; - the solution turns out to be unstable; - it is necessary to revise the model or re-collect the data. In these cases, it may be possible to: - return to reconsider the task formulation; - modify the model; - change the set of alternatives (expanding or narrowing the set); - generate new options. Even if no solution is found, this stage can lead to a deeper understanding of the problem and the identification of new, previously unconsidered aspects. ### 4. Implementation and Completion of the Lifecycle If an acceptable option is found, the implementation stage begins, which includes: - implementing the chosen decision; - monitoring the implementation process; - evaluating the results. Although implementation is not formally part of the decision-making procedure, it is important from a methodological and practical point of view. This stage: - completes the lifecycle of the problem situation; - may initiate a new problem that requires a subsequent solution. ## The Problem of Decision Making A [Decision-making problem](https://systems-analysis.info/eng/Decision-making_problem "Decision-making problem") arises in cases where a problem (task) becomes so complex that a suitable formalization apparatus cannot be immediately applied for its formulation (statement), and when the process of formulating the task requires the participation of specialists from various fields of knowledge. This leads to the task formulation itself becoming a problem, for the solution of which special approaches, techniques, and methods need to be developed. In such cases, it becomes necessary to define the scope of the decision-making problem (the problem situation); identify the factors influencing its solution; and select techniques and methods that allow the task to be formulated or stated in such a way that a solution can be reached. Thus, to make a decision, it is necessary to obtain an expression that links the goal with the means of achieving it, using introduced criteria for assessing the attainability of the goal and evaluating the means. In various applied fields that emerged in parallel, such expressions have received different names: performance criterion; [criterion](https://systems-analysis.info/eng/Criterion "Criterion") or performance indicator, objective or criterion function, objective function, etc. ## External links - Decision-making — Wikipedia ## See also - [Criterion](https://systems-analysis.info/eng/Criterion "Criterion") - [Goal](https://systems-analysis.info/eng/Goal "Goal") - [Decision-making problem](https://systems-analysis.info/eng/Decision-making_problem "Decision-making problem") - [Choice (decision-making)](https://systems-analysis.info/eng/Choice_(decision-making) "Choice (decision-making)") - [Problem](https://systems-analysis.info/eng/Problem "Problem")