Search results for "relevance"
showing 10 items of 500 documents
Learning to Rank Images for Complex Queries in Concept-based Search
2018
Concept-based image search is an emerging search paradigm that utilizes a set of concepts as intermediate semantic descriptors of images to bridge the semantic gap. Typically, a user query is rather complex and cannot be well described using a single concept. However, it is less effective to tackle such complex queries by simply aggregating the individual search results for the constituent concepts. In this paper, we propose to introduce the learning to rank techniques to concept-based image search for complex queries. With freely available social tagged images, we first build concept detectors by jointly leveraging the heterogeneous visual features. Then, to formulate the image relevance, …
A novel dynamic multi-model relevance feedback procedure for content-based image retrieval
2016
This paper deals with the problem of image retrieval in large databases with a big semantic gap by a relevance feedback procedure. We present a novel algorithm for modelling the users's preferences in the content-based image retrieval system.The proposed algorithm considers the probability of an image belonging to the set of those sought by the user, and estimates the parameters of several local logistic regression models whose inputs are the low-level image features. A Principal Component Analysis method is applied to the original vector to reduce its high dimensionality. The relevance probabilities predicted by these local models are combined by means of a weighted average. These weights …
Challenges of tourism development in winter sports destinations and for post-event tourism marketing: the cases of the Ramsau Nordic Ski World Champi…
2013
Previous research on winter sport destinations which have hosted big sport events suggested that there is a gap between the relevance of the systematic considerations of the specific challenges of tourism destination marketing and common practice. The study therefore investigates through individual interviews with key stakeholders (1) the level of agreement with central theoretical statements among stakeholders and key decision-makers at the Austrian destinations Ramsau (a traditional Nordic destination) and St Anton (a traditional Alpine destination) and (2) the relevance of this knowledge to the practical work of the key decision-makers at the destinations. The results show that there is …
Multimodal Perspective into Teachers’ Definitional Practices: Comparing Subject-Specific Language in Physics and History Lessons
2021
This chapter compares two teachers’ definitional practices in two Content-and-Language-Integrated-Learning (CLIL) lessons, i.e. physics and history, which are taught in English in Finland. It adopts Dalton-Puffer’s (Eur J Appl Linguistics 1(2):216–253, 2013; Cognitive discourse functions: specifying an integrative interdisciplinary construct. In: Nikula T, Dafouz E, Moore P, Smit U (eds) Conceptualising integration in CLIL and multilingual education. Bristol: Multilingual Matters, pp. 29–54, 2016) theoretical construct of cognitive discourse functions (CDF) and showcases how it can be operationalized with empirical grounding. Multimodal conversation analysis (CA) is used to trace and observ…
Integrating transaction cost economics and the resource-based view in services and innovation
2009
[EN] This study examines the complementary nature of Williamson's transaction cost theory and that of the resource-based view in the integration or externalisation of activities, with particular reference to services. Assessing comparative costs, idiosyncratic demands and core competences form the criteria for make or buy decisions, although the analysis of services endows idiosyncratic demands with particular relevance when internalisation of services does neither contribute cost advantages nor others related to the core competences of the firm. In addition to these make or buy questions, this study considers the front/back model in cases where the firm manages services internally.
The Qualitative Researcher in the Quality of Life Field
2015
In the current society, there is a plurality of perspectives about the knowledge of the world and in that stage there is an expansion of the use of qualitative methods as expression of the contemporary interest in the subject-matters, considering the epistemological relevance acquired by the introduction of the subject’s word as a possibility to construct knowledge. The qualitative researcher is expected to feel personally involved in every step of the research process, because every consideration and decision will have to be based on entirely personal grounds. Thus, in this chapter, we shall look into the importance of the qualitative researcher’s leading role in each phase of the research…
Transnational Social Network Analysis
2012
AbstractThe following article discusses methods of social network analysis (SNA) as an approach in researching transnational social formations. SNA allows transnationality to be studied through relationships between actors, enabling the investigation of social structures which expand nation-state frameworks. Two empirical examples are used to address the central characteristics of the network analysis approach (focus on relations, systematic collection of data, means of visualising network data) and their relevance for research on cross-border social phenomena. The article also investigates the significance of geographical mobility in the research process, culminating in reflection on how “…
Optimization of Low-Cost Monitoring Systems for On-Site Earthquake Early-Warning of Critical Infrastructures
2020
In the last years, monitoring systems based on low-cost and miniaturized sensors (MEMS) revealed as a very successful compromise between the availability of data and their quality. Also applications in the field of seismic and structural monitoring have been constantly increasing in term of number and variety of functions. Among these applications, the implementation of systems for earthquake early warning is a cutting-edge topic, mainly for its relevance for the society as millions of peoples in various regions of the world are exposed to high seismic hazard. This paper introduces the optimization of an already established seismic (and structural) monitoring system, that would make it suit…
Product-Service Systems in the Digital Era: Deconstructing Servitisation Business Model Typologies
2021
The identification of business model typologies of servitised firms is part of a long research tradition. However, the relevance of many existing typologies in the contemporary context, in which digitalisation is central to business model innovation, may be questioned. Thus, in this chapter, we revisit the existing literature and continue the conceptual discussion about the categorisation of product-service system business models. We propose a conceptual product-service system business model framework with three independent continuums: the degrees of ownership retention, results-orientedness and smartness. Based on this framework, we derive a new product-service system business model typolo…
SERVICE-ORIENTED BUSINESS MODELS IN MANUFACTURING IN THE DIGITAL ERA: TOWARD A NEW TAXONOMY
2020
A stream of servitisation research has focused on the construction of taxonomies and typologies of product–service system business models (BMs). However, their relevance in the context of increased utilisation of digital technologies may be questioned. Thus, the purpose of this paper is to empirically revisit the existing product–service system BM taxonomies to explore the following research question: How can the BMs of servitised manufacturing firms be categorised in the digital era? The question is addressed through an embedded case study of five servitised firms. We found that the firms’ BMs varied with regard to the degree of the suppliers’ ownership of delivered products, degree of sma…