Soft computing and the bullwhip effect*

Reducing the Bullwhip Effect by Means of Intelligent, Soft Computing Methods

We consider a series of companies in a supply chain, each of which orders from its immediate upstream collaborators. Usually, the retailer's order do not coincide with the actual retail sales. The bullwhip effect refers to the phenomenon where orders to the supplier tend to have larger variance than sales to the buyer (i.e. demand distortion), and the distortion propagates upstream in an amplif...

Investigation the Combination of the Bullwhip Effect Weakening and the Anti-Bullwhip Effect Strengthen

On the Bullwhip Effect Measure in Supply Chains with VAR (1) Demand Process

In this paper, a two-echelon supply chain, which includes two products based on the following considerations, has been studied and the bullwhip effect is quantified. Providing a measure for bullwhip effect that enables us to analyze and reduce this phenomenon in supply chains with two products is the basic purpose of this paper. Demand of products is presented by the first order vector autoregr...

Measuring and Analyzing the Bullwhip Effect in a Two-Product and Two Echelon Supply Chain Using Control Theory Approach

Coordination is very important in supply chain management and it is one of the main factors in supply chain profitability. Bullwhip effect is one of the basic obstacles to achieve coordination in supply chains and reduction of this phenomenon has an important role in supply chain harmony. The other side, costs of supply chain can be mitigated and customer service level can be increased by reduc...

Analyzing Bullwhip Effect in Supply Networks under Exogenous Uncertainty

This paper explains a model for analyzing and measuring the propagation of order amplifications (i.e. bullwhip effect) for a single-product supply network topology considering exogenous uncertainty and linear and time-invariant inventory management policies for network entities. The stream of orders placed by each entity of the network is characterized assuming customer demand is ergodic. In fa...