decision trees

Palisade’s PrecisionTree Software Helps Form New AACE International Recommended Practice

Palisade’s PrecisionTree software was featured prominently in Cost Engineering Magazine’s July/August 2014 issue.  The article “Use Decision Trees to Make Important Project Decisions,” by long-time Palisade software user Dr. David T. Hulett, describes how decision trees can help decision makers choose between multiple options and take account of cost and rewards of different options.

decision tree 1

The article “forms the foundation of a new AACE International Recommended Practice,” and examines two different approaches to making a decision: maximize expected monetary value, which is a hallmark of a risk-neutral organization, or, maximize expected utility, which is the appropriate measure of merit for a risk-averse or even a risk-seeking organization. Both approaches benefit from the use of decision trees, as well as optimization and Monte Carlo simulation, to better select and represent alternative outcomes.

decision tree 2

For anyone interested in incorporating decision trees into their decision making, consider checking out Palisade’s PrecisionTree software; it allows you to visually map out, organize, and analyze decisions using decision trees, right in Microsoft Excel.


Shipping Industry Relies on PrecisionTree, @RISK, to Manage Risks to Crew, Environment, and Property

DNV GL SEShipping Industry Relies on PrecisionTree, @RISK, to Manage Risks to Crew, Environment, and Property, an international organization for ship classification, safety and quality control, uses PrecisionTree and @RISK software (part of the DecisionTools Suite, Palisade’s complete toolkit of risk and decision analysis tools) to determine the risk of an incident occurring to a ship or its systems and the consequences should one occur. This enables cost-benefit analysis so that informed decisions can be made about the best strategies to mitigate risk events.

DNV GL is the world’s largest ship and offshore classification organization, and in this context, DNV GL is a key player in major research and development projects for the shipping industry. A core element of their focus is enhancing safety and security in shipping by pro-active use of risk assessment and cost-benefit techniques.

Part of their risk assessment method involves Palisade’s decision tree software, PrecisionTree, to develop the risk models that apply to: (1) crew; (2) environment; and (3) property.

They then use @RISK to perform Monte Carlo simulation, which factors in the uncertainty of input parameters for the risk models, and illustrates the impact on the estimates provided for the assessment of a current level of risk, as well as the cost-efficiency of risk-mitigating measures.

“PrecisionTree makes it straightforward to quickly develop event trees. These are essential to our analysis when looking at how to reduce the both the number of shipping incidents and the consequences should they occur,” explains Dr. Rainer Hamann, Topic Manager Risk Assessment, Safety Research at DNV GL SE. “At the same time we have to be realistic about the accuracy of our data inputs and, by means of distributions and Monte Carlo simulation, @RISK enables us to be clear about the level of uncertainty contained in each model. Embedded in the Microsoft environment, it also allows us to incorporate standard Excel features, making it easy to use.”

Read the original case study here.