Informally speaking, diversification of search results refers to a trade-off between relevance and diversity in the set of results. In this article, we present a unifying framework for search result diversification using the axiomatic approach. The characterization provided by the axiomatic framework can help design and compare diversification systems, and we illustrate this using several examp...

This paper analyzes the diversification-value puzzle from the Real Options (RO) approach. Our proposal conceives corporate diversification as a process which involves both the sequential replacement of prior acquired investment opportunities by assets-in-place and the generation of new valuable growth options. We argue that this conceptual framework allows to explain both documented diversifica...

We report our systems and experimental results in the diversity task of web track 2012. Our goal is to exploit the structured data, i.e., the ontologies, as well as unstructured data for search result diversification. We use two strategies in the diversification systems. The first strategy combines the ontology and unstructured data to extract integrated subtopics. It then uses the coverage bas...

This paper investigates the optimal design of diversification rules for regulated enterprises. Diversification by a regulated firm generates profit in non-core markets that can be shared with core customers. However, a diversified firm may divert its attention and effort to its non-core operations, causing consumer welfare in the core market to decline. When diversification is permitted, lower ...

within the broader category of rural tourism, agrotourism is a type of tourism carried out in avery specific environment, mixed livestock and tillage farms. its importance resides in the fact that it offers the possibility of complementing the income generated by the farm with income generated from tourism while at the same time carrying out an activity that promotes the conservation of nature....

Several definitions of diversification exist. Such motivation for diversification could apply Typically, the concept is dynamic and refers to-the equally to proprietary or cooperative forms of relationship among various activities or enterprises in business. which the firm is engaged. As new activities are The purpose of this paper is to quantitatively acquired by a firm from some existing base...

Diversification has been the subject of much examination in agribusiness firms. According to behavioral research, firms diversify through a process of either exploitation or exploration. Exploration entails searching for ideas and technologies that broaden a firm’s established experiences. Such diversification not only exposes a firm to a new technologies to which can be recombined with a firm’...

A key challenge in developing efficient local search solvers is to intelligently balance diversification and intensification. This study proposes a heuristic that integrates a new dynamic scoring function and two different diversification criteria: variable weights and stagnation weights. Our new dynamic scoring function is formulated to enhance the diversification capability in intensification...

Diversity is a fundamental, yet threatened, property of ecological systems. The idea that diversity can itself favour diversification, in an autocatalytic process, is very appealing but remains controversial. Here, we study a generalized model of ecological communities and investigate how the level of initial diversity influences the possibility of evolutionary diversification. We show that eve...

Behavioral changes have long been hypothesized to be an important driver of evolutionary diversification in animals, as they expose individuals to new environmental pressures and thus favor evolutionary divergence. There have been few empirical tests of this hypothesis, however, and the mechanisms linking behavioral changes and diversification processes remain controversial. We show here that H...