Skip to main content


Decision Modeling, particularly when implemented using JDM Standard, is an approach that simplifies complex decision-making processes. JDM provides a common notation understandable by both business and technical users. It is designed to represent and model decisions in a way that mirrors the actual decision logic of business processes. The beauty of modeling lies in its ability to map out complex decision trees and logic in a graphical format, making it easier to understand, analyze, and communicate decision-making processes. This approach is widely used across various industries, aiding in creating transparent, consistent, and structured decision-making frameworks that align closely with organizational goals and strategies.


JDM is JSON Decision Model, a standard developed by GoRules Technologies.

Expression Language

The expression language plays a pivotal role in decision modeling. The primary language used in JDM is the ZEN Expression Language. ZEN Expression Language is designed to be highly user-friendly, allowing both business analysts and technical developers to define complex decision logic in a way that is both easy to understand and precise.

ZEN Expression Language enables the expression of rules, decision logic, and data transformations in a manner that resembles natural language. This language supports various constructs such as if-then-else statements and mathematical operations, which are essential for articulating complex decision criteria and conditions. Additionally, it's capable of handling different data types, including numbers, strings, dates, and lists, making it versatile for a broad range of decision scenarios.

One of the key strengths of ZEN Expression Language is its ability to integrate seamlessly with decision tables in JDM. Decision tables provide a tabular format for defining decision rules, where ZEN Expression Language can be used to articulate the rules' conditions and actions. This combination of ZEN Expression Language and decision tables allows for the creation of comprehensive and sophisticated decision models that are both powerful and easily interpretable.

Graph-Based Decisioning

Graph-based decisioning, a core component of JDM, involves the use of decision nodes to visually represent and connect different decision elements. These graphs are pivotal in illustrating how various decisions and input data interact and influence one another within a decision-making process.

In a JDM, nodes represent decision points, data inputs, business knowledge models, or knowledge sources. Each node is interconnected, showing the flow and dependency of information and decisions. For instance, a decision node might depend on input data and another decision's outcome. This visualization allows for an intuitive understanding of the decision-making process, highlighting areas of complexity and interdependence.

Decision nodes in these graphs use ZEN Expression Language or other business rules to define their logic. The graphical representation helps in tracing the logic's impact on the overall decision-making process. Additionally, nodes can be used to identify redundant processes or potential areas for optimization, thereby enhancing the efficiency and effectiveness of decision models.

Graph-based decisioning in JDM not only aids in creating transparent and structured decision-making processes but also plays a crucial role in documentation and compliance. It ensures that decision models are easily interpretable, maintainable, and scalable, aligning with the evolving needs of an organization.

Next steps

Learn more about parts of component: