Search results

Purpose — The overall quality of an information retrieval system depends on many different aspects of the system and its users' information seeking behaviour, such as the speed of the system, the user interface, the query language and the features provided by the engine. One of the most important aspects is the effectiveness of the retrieval system, i.e. its ability to retrieve items that are relevant to the information need of an end user. This chapter focuses on methods for measuring effectiveness, in particular focusing on recent work that more directly models the utility of an engine to its users.

Methodology/approach — We discuss traditional approaches to effectiveness evaluation based on test collections, then transition to approaches based on test collections along with explicit models of user interaction with search results. We contrast this with approaches for which the user is ‘in the loop’, such as user studies and online evaluations.

Research limitations/implications — If it were possible to model users perfectly, we could directly estimate the utility of a search engine to its users; this would undoubtedly have a transformative effect on information retrieval and web search research. In practice, this goal will never be achievable because users exhibit far too much variability in how they approach the search engine, and furthermore provide valuable feedback that models and simulations cannot provide. Nevertheless, better models of user interaction will help develop better web search engines for a wider variety of tasks more rapidly.

Originality/value of paper — This is the first work that surveys recent work on user model-based evaluation and places it in a context with traditional evaluation based on the Cranfield paradigm.

Purpose — Since a couple of years, we are confronted with the phenomenon of information overload. In particular, the web provides a rich source of a variety of information mainly in textual, i.e. unstructured form. Thus, web search faces new challenges that are how to make the user aware of the variety of content available and how to satisfy users best with such manifold content.

Methodology — This variety of content is considered as diversity, i.e. the reflection of a result set's coverage of multiple interpretations of a query. Diversification within web search aims on the one hand at adapting the ranking in a way that the top results are diverse. Increasingly important becomes on the other hand the organization and classification of content within diversification.

Findings — Various approaches to diversification are available or currently focus on research activities. They range from an adapted ranking by means of similarity measures or diversity scores to a comprehensive diversity analysis which determines topics and classifies text according to opinions etc.

Implications — Given the high diversity of web content, approaches for diversification are extremely important. Web search tries to address this problem from different perspectives. For the future, combination with image search result diversification is important. Further, benchmarks and standard data sets for evaluations need to be established to ensure comparability of results from various approaches.

Originality/value — This chapter provides an overview on diversity in web search from two directions: (a) Diversity is introduced with its notions and dimensions. (b) Methods to assess diversity within web search are presented.

Social media are central to the creation and maintenance of social relations, including romantic relations. While much of the scholarship has examined how social media play a role in the initiation and maintenance of romantic relations, little is known about their role in romantic dissolution. This chapter fills this gap by examining the kinds of strategies young adults employ to cope with the aftermath of a romantic breakup complicated by Facebook. Based on qualitative analysis of 10 interviews with young adults, the authors propose a typology of Facebook coping strategies for romantic breakups. The typology includes seven types of coping strategies with 12 subtopics and 25 specific actions linked to the subtopics. The authors find that those coping with a breakup engage in erasing and avoiding breakup reminders and digital traces, as they perceive them as hurtful. They regulate their use of Facebook and limit Facebook communication with the ex. An important coping strategy used was to express their emotions via Facebook content, often aimed at the ex-partner. They also use Facebook to seek support and new information about the ex, including about potential new romantic interests. Others preferred to avoid information about the ex and either deleted the ex and their friends or chose to unsubscribe to updates. Coping strategies included preventative measures such as changing passwords, blocking the ex, and adjusting privacy settings. We found our participants engaged in both goal-directed and emotionally based coping strategies. Yet, the findings suggest a tendency to rely more extensively on goal-directed coping strategies by actively addressing the breakup stressor. We also note that coping strategies specific to Facebook are more likely to be used than traditional offline forms of coping. This exploratory study serves as a starting point to better understand the role that Facebook plays in mediating online behaviors following a romantic dissolution, such that these strategies can be subsequently evaluated in terms of usefulness in clinical coping recommendations.

This chapter analyzes the impact of intercultural academic experiences on students in the areas of intercultural sensitivity and multicultural awareness, knowledge, and skills.

Cottey College’s mission statement includes a clause about educating students to be useful members of a global society (Mission, n.d., para. 1). Toward achieving the mission, each of Cottey College’s second year students is offered an international experience over spring break that is largely paid for by endowed funds. For spring break 2015, the author of this chapter and a colleague offered a trip to Thailand. To participate, students were required to take part in a Step into the World!: Thailand course that was intended to prepare them to successfully navigate, and later reflect upon, their experience abroad. The trip portion of the course spanned 10 days. To measure what impacts the course may have had, students were asked to complete a pre-course and post-course survey, the Intercultural Sensitivity Scale (Fritz, Möllenberg, & Chen, 2002), and to complete journal entries and a personal impact statement by which their multicultural awareness, knowledge, and skills were assessed.

Analysis of the results suggests the Step into the World!: Thailand course had a positive impact on the majority of students’ intercultural sensitivity and multicultural awareness, knowledge, and skills.

The findings support the importance of intentionally combining inside and outside of the classroom experiences to enhance student outcomes.

Internet + and Electronic Business in China is a comprehensive resource that provides insight and analysis into E-commerce in China and how it has revolutionized and continues to revolutionize business and society. Split into four distinct sections, the book first lays out the theoretical foundations and fundamental concepts of E-Business before moving on to look at internet+ innovation models and their applications in different industries such as agriculture, finance and commerce. The book then provides a comprehensive analysis of E-business platforms and their applications in China before finishing with four comprehensive case studies of major E-business projects, providing readers with successful examples of implementing E-Business entrepreneurship projects.

Internet + and Electronic Business in China is a comprehensive resource that provides insights and analysis into how E-commerce has revolutionized and continues to revolutionize business and society in China.

Securing the managerial and executive talent that organizations need is a hot topic in the contemporary business community, but it is also an old challenge with a long and varied history. Contemporary observers are typically surprised to discover first how much the practices from the 1920s look like those that are dominate in the more innovative industries a century later and second how much more sophisticated the plans and systems for managing talent in corporations were in the 1950s than now. The research community interested in human resources often sees the 1950s practices as something like a dominant paradigm; they have in fact already been in sharp decline for almost a generation. For researchers and instructors interested in the practices of “talent management” at the managerial and executive level considered broadly – including subtopics like management development, career planning, succession planning, etc. – it is important to see the roots of contemporary practices and how they have and are changing over time as doing so reinforces the basic notion from contingency theory: practices respond to changes in context. The important aspects of context that drove changes in the design and execution of managerial careers over time has to do with the structure of corporations and how they responded to their competitive environment. The fact that changing business needs led to different corporate structures, business models, and, in turn, different approaches for managing the leaders of corporations also gives us perhaps the best guidance as to where practices in these areas will be in the future. For researchers, starting with this historical perspective is also the best way to develop a macro perspective on the more micro practices and outcomes associated with these talent management questions.

Part V analyzes the details of how to assess materiality. It first tackles qualitative versus quantitative criteria and the role of professional judgment. It then analyzes the selection of quantitative threshold, to expand to the choice of benchmarks. It contrasts the whole financial statements with subaggregates, line items, and components.

Specific sections contrast IASB, FASB, SEC, and other guidance on materiality applied to comparative information, interim reporting, and segment reporting.

The section on estimates mingles complex guidance coming from accounting, auditing, and internal control over financial reporting to explain how the management can improve its assessment of materiality concerning estimates.

After explaining the techniques to move from individual to cumulative misstatements, the part tackles verification ex post, and finally summarizes the intricacies of whether immaterial misstatements are permissible and their consequences.

This chapter brings to notice the general idea behind the need to consider value as a pertinent point since construction is swiftly moving towards sustainability. The introductory chapter introduces the general information about the subtopics across the parts of the book and mentions other techniques implemented in the construction industry. The value system for construction characterizes construction features into sections. The barriers often experienced in implementing value management highlight some of the difficulties encountered in applying value management or any new technique in the construction industry. The summary aspect ends the whole concept of the work discussed in this chapter.