In software product line (SPL) development, evolutions occur in core assets and application products. How to ensure their alignment in evolution is a big challenge. Products in an SPL share a reference architecture, which centers in SPL development and evolution, so architectural evolution management is a natural and essential choice for SPL. In this paper, we propose an architecture-based evol...

We study the void distribution in the completed 2dFGRS using counts-in-cells to measure the reduced void probability function (VPF). Theoretically, the VPF connects the distribution of voids to the moments of galaxy clustering of all orders. The reduced VPF measured from the 2dFGRS is in excellent agreement with the paradigm of hierarchical scaling of the galaxy clustering moments. This scaling...

We present a uniform mathematical characterization of interconnection network classes referred to as product-closed networks (PCN). A number of popular network classes fall under this characterization including binary hypercubes, tori, k-ary n-cubes, meshes, and generalized hypercubes. An unlimited number of other networks can be defined using the presented mathematical characterization. An imp...

Execution environments are used as specifications for specialization of input-output programs in the derivation of product lines. These environments, formalized as color-blind I/O-alternating transition systems, are tolerant to mutations in a given program’s outputs. Execution environments enable new compiler optimizations, vastly exceeding usual reductions. We propose a notion of context-depen...

Software product lines have received increasing amounts of attention within the software engineering community, especially from industry. Most authors focus on the technical and process aspects and assume an organizational model consisting of a domain engineering unit and several application engineering units. In our cooperation with several software development organizations applying software ...

We extend the cited model in two fundamentally different ways. First, we include different distance functions between image features to capture relationship between images of products that are visually different but related to each other (e.x. white shirt and blue jeans). Secondly, we exploit the category information present as meta-data to find relationships between products (e.x.product-pair ...

Abstract: Based on the analysis of the background of virtual enterprises, the framework and strategies of virtual enterprise oriented enterprises are put forward. The process control of cooperative product development in the virtual organization is also discussed where the hierarchical architecture of the dynamic relations among tasks, processes, and resources is presented. Based on J2EE platfo...

In this paper, a methodology has been introduced as a decision support tool to the consumers in the Internet business. This decision support tool takes into account the multiple attributes of the product, analyses them with respect to the consumer’s desire, and finally classifies these products into different hierarchical levels as per the consumer’s level of preference. The product attributes,...

We study an instance-based approach for matching hierarchical ontologies, such as product catalogs. The motivation for utilizing instances is that metadata-based match approaches often suffer from semantic heterogeneity, e.g. ambiguous concept names, different concept granularities or incomparable categorizations. Our instance-based match approach matches categories based on the instances (e.g....

We propose new cross-conv algorithm for approximate computation of convolution in different low-rank tensor formats (tensor train, Tucker, Hierarchical Tucker). It has better complexity with respect to the tensor rank than previous approaches. The new algorithm has a high potential impact in different applications. The key idea is based on applying cross approximation in the “frequency domain”,...