We describe how hierarchical ontologies are used for classifying products, as well as for answering queries. For classifying and scoring product descriptions and queries in an electronic-commerce search engine, we make use of declarative hypernym/hyponym and meronym/holonym hierarchies, such as the sense hierarchies provided by WordNet. Retrieval is also aided by use of the ontology. Results of...

The predominant mechanisms for helping users find products in electronic catalogs are hierarchical navigation and text-based searches. Advanced electronic product catalogs also offer support for feature-based search or interactive product configuration. However, these search mechanisms are only appropriate if the space of products to be presented conforms to a number of simplifying restrictions...

T paper studies assortment planning and pricing for a product category with heterogeneous product types from two brands. We model consumer choice using the nested multinomial logit framework with two different hierarchical structures: a brand-primary model in which consumers choose a brand first, then a product type in the chosen brand, and a type-primary model in which consumers choose a produ...

Concurrent engineering (CE) has been widely accepted as an effective engineering practice for decreasing product development time, improving quality, decreasing manufacturing costs, and improving customer satisfaction. Since CE philosophy is intended to consider all elements of product life cycle from the outset, CE approach increases the complexity of design problem and makes it more difficult...

The purpose of this study is to explore the users’ process mental models of classification task. Hierarchical grouping and image tests are conducted to analyze the way they classify the real product samples of mobile phones. From the database of similarity and image tests, cluster analyses were used to analyze the distribution of total images and form features (the form treatments) in the tree ...

The hub location problem is employed for many real applications, including delivery, airline and telecommunication systems and so on. This work investigates on hierarchical hub network in which a three-level network is developed. The central hubs are considered at the first level, at the second level, hubs are assumed which are allocated to central hubs and the remaining nodes are at the third ...

In this paper, the edge a-Zagreb indices and its coindices of some graph operations, such as generalized hierarchical product, Cartesian Product, join, composition of two graphs are obtained. Using the results obtained here, we deduce the F -indices and its coindices for the above graph operation. Finally, we have computed the edge a-Zagreb Index, F -index and their coindices of some important ...

A novel octahedron-like hierarchical structure of Bi2WO6 has been fabricated by a facile hydrothermal method in high quantity. XRD, SEM, TEM, and HRTEM were used to characterize the product. The results indicated that this kind of Bi2WO6 crystals had an average size of *4 lm, constructed by quasi-square single-crystal nanosheets assembled in a special fashion. The formation of octahedron-like h...

This paper develops a quality estimation method with the application of fuzzy hierarchical clustering. Quality estimation is essential to quality control and quality improvement as a precise estimation can promote a right decision-making in order to help better quality control. Normally the quality of finished products in manufacturing system can be differentiated by quality standards. In the r...