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Event chain methodology is an uncertainty modeling and schedule network analysis technique that is focused on identifying and managing events and event chains that affect project schedules. Event chain methodology helps to mitigate the negative impact of psychological heuristics and biases, as well as to allow for easy modeling of uncertainties in the project schedules. Network analysis is the analysis of networks through network theory (or more generally graph theory). ...
A project is a temporary endeavor undertaken to create a unique product or service. ...
Look up Heuristic in Wiktionary, the free dictionary. ...
For other senses of this word, see bias (disambiguation). ...
Event chain methodology helps to mitigate effect motivational and cognitive biases in estimating and scheduling. In many cases, project managers intentionally or unintentionally create project schedules that are impossible to implement. The methodology also simplifies the process of defining risks and uncertainties in project schedules, particularly improve the ability to provide reality checks and visualize multiple events. Event chain methodology is used to perform more accurate quantitative analysis while taking to an account such factors as relationship between different events and actual moment of the events. This article or section is in need of attention from an expert on the subject. ...
Cognitive bias is any of a wide range of observer effects identified in cognitive science, including very basic statistical and memory errors that are common to all human beings (first identified by Amos Tversky and Daniel Kahneman) and drastically skew the reliability of anecdotal and legal evidence. ...
Estimation is the calculated approximation of a result which is usable even if input data may be incomplete, uncertain, or noisy. ...
Look up scheduling in Wiktionary, the free dictionary. ...
Event Chain Methodology Principles
Moment of risk and state of activity  Moment of risk and state of activity An activity (task) in most real life processes is not a continuous uniform procedure. Tasks are affected by external events, which transform an activity from one state to another.
One of the important properties of an event is the moment when an event occurs during the course of an activity. This moment, when an event occurs, in most cases is probabilistic and can be defined using statistical distribution. In mathematics, a probability distribution assigns to every interval of the real numbers a probability, so that the probability axioms are satisfied. ...
Event Chains Events can cause other events, which will create event chains. These event chains can significantly affect the course of the project. For example, requirement changes can cause an activity to be delayed. To accelerate the activity, the project manager allocates a resource is from another activity, which then leads to a missed deadline. Eventually, this can lead to the failure of the project.
Monte Carlo Simulations Once events and event chains are defined, quantitative analysis using Monte Carlo simulation can be performed to quantify the cumulative impact of the events. Probabilities and impacts of risks are using as in input data for Monte Carlo simulation of the project schedule. In most real life projects, it is necessary to supplement the information regarding the uncertainties expressed as an event with distributions related to duration, start time, cost, and other parameters. Monte Carlo methods are algorithms for solving various kinds of computational problems by using random numbers (or more often pseudo-random numbers), as opposed to deterministic algorithms. ...
Critical Event Chains The single events or the event chains that have the most potential to affect the projects are the “critical events” or “critical chains of events.” By identifying critical events or critical chains of events, we can mitigate their negative effects. These critical chains of events can be identified by analyzing the correlations between main the project parameters, such as project duration or cost, and the event chains.
Performance Tracking with Event Chains Monitoring the activity's progress ensures that updated information is used to perform the analysis. During the course of the project, the probability and time of the events can be recalculated based on actual data. The main issue with performance tracking is forecasting an activity’s duration and cost if an activity is partially completed and certain events are assigned to the activity. The simple heuristic approach to this problem is to analyze the moment of risk, which is defined as one of the event parameters. Advanced analysis can be performed using a Bayesian approach.
Event Chain Diagrams Event Chain Diagrams are visualizations that show the relationships between events and tasks and how the events affect each other. The simplest way to represent these chains is to depict them as arrows associated with certain tasks or time intervals on the Gantt chart. Different events and event chains can be displayed using different colors. Events can be global (for all tasks in the project) and local (for a particular task). By using Event Chain Diagrams to visualize events and event chains, the modeling and analysis of risks and uncertainties can be significantly simplified.
Event Chain Methodology Phenomena
Repeated Activities Sometimes events can cause the start of an activity that has already been completed. This is a very common scenario for real life projects; sometimes a previous activity must be repeated based on the results of a succeeding activity Modeling of these scenarios using event chain methodology is simple. The original project schedule does not need to be updated, as all that is required is to define the event and assign it to an activity that points to the previous activity. In addition, a limit to the number of times an activity can be repeated needs to be defined. Event Chains and Risk Mitigation If event or event chain occurs during the course of a project, it may require some mitigation effort. In some cases, mitigation plans can be generated. Mitigation plans are an activity or group of activities (small schedule) that augment the project schedule if a certain event occurs. The solution is to assign the mitigation plan to an event or event chain. These small schedules will be triggered when an event chain occurs. The same mitigation plan can be used for different events. Each mitigation plan will have entry and exit points. Resource Allocation Based on Events One potential event is the reassignment of a resource from one activity to another, which can occur under certain conditions. For example, if an activity requires more resources to complete it within a fixed period, this will trigger an event to reallocate the resource from another activity. Reallocation of resources can also occur when activity duration reaches a certain deadline or the cost exceeds a certain value. Events can be used to model different situations with resources, e.g. temporary leave, illness, vacations, etc.
See also The Critical Path Method, abbreviated CPM, is a mathematically based algorithm for scheduling a set of project activities. ...
Monte Carlo methods are algorithms for solving various kinds of computational problems by using random numbers (or more often pseudo-random numbers), as opposed to deterministic algorithms. ...
Aggregate planning Agile software development Artemis (software) BugBox (software) Critical path method Critical chain Cost overrun Dependency Duration (project management) Earned Schedule Earned value management Estimation Estimation in software engineering Extreme project management Float (project management) Focused improvement Fordism Gantt, Henry Gantt chart Goal (management) The Goal (book) Goldratt, Eliyahu...
PERT network chart for a seven-month project with five milestones (10 through 50) and six activities (A through F). ...
A project is a temporary endeavor undertaken to create a unique product or service. ...
Project management is the discipline of organizing and managing resources in such a way that these resources deliver all the work required to complete a project within defined scope, time, and cost constraints. ...
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A Work Breakdown Structure ( is a fundamental project management technique for defining and organizing the total scope of a project, using a hierarchical tree structure. ...
The following is a list of project management software. ...
External links - Project Management Using Event Chain Methodology
- Project Planning Using Event Chain Methodology
Software - RiskyProject - Project risk management using Event chain methodology by Intaver Institute Inc.
- Pertmaster project risk - Project risk analysis by Pertmaster
- @Risk for Project - project risk analysis by Palisade Corporation
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