Cookies Policy
We use cookies to improve our site and your experience. By continuing to browse our site you accept our cookie policy. Find out More
Close
  • Menu
Interest
Topics
Details

Details

Publications

2018

Allocating products on shelves under merchandising rules: Multi-level product families with display directions

Authors
Bianchi Aguiar, T; Silva, E; Guimardes, L; Carravilla, MA; Oliveira, JF;

Publication
Omega (United Kingdom)

Abstract
Retailers’ individual products are categorized as part of product families. Merchandising rules specify how the products should be arranged on the shelves using product families, creating more structured displays capable of increasing the viewers’ attention. This paper presents a novel mixed integer programming formulation for the Shelf Space Allocation Problem considering two innovative features emerging from merchandising rules: hierarchical product families and display directions. The formulation uses single commodity flow constraints to model product sequencing and explores the product families’ hierarchy to reduce the combinatorial nature of the problem. Based on the formulation, a mathematical programming-based heuristic was also developed that uses product families to decompose the problem into a sequence of sub-problems. To improve performance, its original design was adapted following two directions: recovery from infeasible solutions and reduction of solution times. A new set of real case benchmark instances is also provided, which was used to assess the formulation and the matheuristic. This approach will allow retailers to efficiently create planograms capable of following merchandising rules and optimizing shelf space revenue. © 2017 Elsevier Ltd

2012

An Hierarchical Approach to Shelf Space Allocation

Authors
Teresa Bianchi Aguiar; Maria Antónia Carravilla; José Fernando Oliveira

Publication
in Proceedings of 9th ESICUP Meeting - 9th ESICUP Meeting - EURO Special Interest Group on Cutting and Packing, La Laguna, Espanha

Abstract
Shelf Space Allocation (SSA) is the problem of distributing the limited and scarce shelf space of a store among a given set of assorted products. In the Waescher et al improved typology of Cutting and Packing (C&P) problems, SSA falls into the category of Placement Problems. Shelves represent the multiple large objects, and each assorted product represents a subset of similar small rectangle items, from which a certain quantity must be assigned to the shelves, limited by an upper and lower bound. More than just displaying the merchandise available in the store, the clever arrangement of the products in the shelves is seen as a tool to improve the store's financial performance. Therefore, besides the C&P aspects of this problem, additional marketing variables are associated, in order to integrate the impact of different allocation decisions in products demands. The objective of the problem is then to allocate the products items, which can be regarded either as a 2D or a 3D problem,...

2012

Municipal Waste Collection in Ponte de Lima, Portugal - a vehicle routing application

Authors
Teresa Bianchi Aguiar; Maria Antónia Carravilla; José Fernando Oliveira

Publication
OR Insight - OR Insight

Abstract
Between 40 and 60 per cent of a community's waste management system costs are due to the collection of waste from containers to disposal facilities. In Ponte de Lima, a municipality in the north of Portugal, collection plans are still made by hand. This article describes the work done to apply optimization methods to obtain efficient plans with reduced collection costs, highly dependent on the distance travelled by collecting vehicles. It focuses on all the steps needed to solve the problem, that is analysis of the problem, gathering of the data requirements and handling of the available data to deal with problems such as lack of information, problem complexity and the need of not disrupting current practices. A visiting calendar for each container and a 1-week plan of daily routes for the vehicles were delivered to the municipality. With these plans, we estimate reductions of 26 per cent in the total distance travelled by the vehicles.

2012

Otpimizing Shelf Space in Retail Stores

Authors
Teresa Bianchi Aguiar; Maria Antónia Carravilla; José Fernando Oliveira

Publication
in Proceedings of EURO 2012 - 25th European Conference on Operational Research, Vilnius, Lituânia

Abstract
In retail stores, the number of available products is constantly increasing, leading to a continuous need for space management. To do so, retailers rely on planograms, designs of fixtures (e.g. shelves) showing the desired products allocation. Driven by the case of a Portuguese supermarket chain, we will present a hierarchical approach to planogram generation, a Placement C&P Problem known in literature as Shelf Space Allocation Problem. The proposed approach splits the problem into two main levels: allocation of space to each product and placement of product items into each allocated space.

2011

The Retail Shelf Space Allocation Problem -- a Review

Authors
Teresa Bianchi-Aguiar; Maria Antónia Carravilla; José Fernando Oliveira

Publication
Proceedings of 8th ESICUP - 8th ESICUP Meeting (EURO Special Interest Group on Cutting and Packing), Copenhaga, Dinamarca

Abstract