Real-Time Recommendation of Streamed Data

This tutorial addressed two trending topics in the field of recommender systems research, namely A/B testing and real-time recommendations of streamed data. Focusing on the news domain, participants learned how to benchmark the performance of stream-based recommendation algorithms in a live recommender system and in a simulated environment

The effectiveness of the creativity trigger module in achieving higher levels of creative thinking among prospective teachers

The unoptimised level of creative thinking is seen as an issue among Semester 8 prospective teachers in Malaysian Teacher-Education Institutes (IPG). This could impede their teaching of creative thinking as one of the four components of 21st century skills in schools. In relation to this, this study sets out to investigate prior creativity levels of IPG prospective teachers and develop the Creativity Trigger Module (CTM) as a training module for enhancing their creativity. The Torrance Tests of Creative Thinking (TTCT) was used to compare the prior creativity levels of four respondent groups and test the effectiveness of the CTM on five dimensions of figural creativity, namely fluency, originality, elaboration, resistance to premature closure, abstractness of titles, and their overall creativity. A two-stage cluster sampling technique identified two IPGs with 68 respondents in the state of Johor namely, IPG-Kampus Tun Hussein Onn, Batu Pahat (IPGKTHO) as the control group site (34 respondents), and IPG- Kampus Temenggong Ibrahim, Johor Bahru (IPGKTI) as the treatment group site (34 respondents). Mathematics (MT) and Design and Technology (RBT) are the only two specialist subject combinations that provided enough sample size at both test sites. A quasi-experimental research design was used and this involved intact classes. Data analysis was carried out as follows: ANOVA, ANCOVA, and Wilcoxon Signed Rank Test analysis for TTCT scores while data analysis based on the NVivo software was used for the focus group interviews. Findings on prior creativity levels showed average or low creativity levels among all 4 test groups with IPGKTHO and RBT options having significantly higher posttest marks as compared to IPGKTI and MT option respectively. The CTM was found to improve significantly respondents’ posttest marks for the treatment group in all the five dimensions of figural creativity and, their overall creativity. Feedback from respondents revealed positive support for the CTM. In conclusion, the prior creativity of IPG prospective teachers was at an unoptimised level before treatment but the CTM has been successfully developed as an effective resource for enhancing the creative thinking levels among IPG prospective teachers

Objective assessment of region of interest-aware adaptive multimedia streaming quality

Adaptive multimedia streaming relies on controlled adjustment of content bitrate and consequent video quality variation in order to meet the bandwidth constraints of the communication link used for content delivery to the end-user. The values of the easy to measure network-related Quality of Service metrics have no direct relationship with the way moving images are perceived by the human viewer. Consequently variations in the video stream bitrate are not clearly linked to similar variation in the user perceived quality. This is especially true if some human visual system-based adaptation techniques are employed. As research has shown, there are certain image regions in each frame of a video sequence on which the users are more interested than in the others. This paper presents the Region of Interest-based Adaptive Scheme (ROIAS) which adjusts differently the regions within each frame of the streamed multimedia content based on the user interest in them. ROIAS is presented and discussed in terms of the adjustment algorithms employed and their impact on the human perceived video quality. Comparisons with existing approaches, including a constant quality adaptation scheme across the whole frame area, are performed employing two objective metrics which estimate user perceived video quality

Towards a new ITU-T recommendation for subjective methods evaluating gaming QoE

This paper reports on activities in Study Group 12 of the International Telecommunication Union (ITU-T SG12) to define a new Recommendation on subjective evaluation methods for gaming Quality of Experience (QoE). It first resumes the structure and content of the current draft which has been proposed to ITU-T SG12 in September 2014 and then critically discusses potential gaming content and evaluation methods for inclusion into the upcoming Recommendation. The aim is to start a discussion amongst experts on potential evaluation methods and their limitations, before finalizing a Recommendation. Such a recommendation might in the end be applied by non -expert users, hence wrong decisions in the evaluation design could negatively affect gaming QoE throughout the evaluation

Region of interest-based adaptive multimedia streaming scheme

Adaptive multimedia streaming aims at adjusting the transmitted content based on the available bandwidth such as losses that often severely affect the end-user perceived quality are minimized and consequently the transmission quality increases. Current solutions affect equally the whole viewing area of the multimedia frames, despite research showing that there are regions on which the viewers are more interested in than on others. This paper presents a novel region of interest-based adaptive scheme (ROIAS) for multimedia streaming that when performing transmission-related quality adjustments, selectively affects the quality of those regions of the image the viewers are the least interested in. As the quality of the regions the viewers are the most interested in will not change (or will involve little change),the proposed scheme provides higher overall end-user perceived quality than any of the existing adaptive solutions

Interactive product browsing and configuration using remote augmented reality sales services

Real-time remote sales assistance is an underdeveloped component of online sales services. Solutions involving web page text chat, telephony and video support prove problematic when seeking to remotely guide customers in their sales processes, especially with configurations of physically complex artefacts. Recently, there has been great interest in the application of virtual worlds and augmented reality to create synthetic environments for remote sales of physical artefacts. However, there is a lack of analysis and development of appropriate software services to support these processes. We extend our previous work with the detailed design of configuration context services to support the management of an interactive sales session using augmented reality. We detail the context and configuration services required, presenting a novel data service streaming configuration information to the vendor for business analytics. We expect that a fully implemented configuration management service, based on our design, will improve the remote sales experience for both customers and vendors alike via analysis of the streamed information

Digital radio report

In common with other industrialised countries, the radio industry in Australia is in the midst of a significant transformation. Traditional analogue radio services, broadcasting on AM and FM frequencies, remain popular and continue to attract substantial audiences and revenue. However, the analogue platform is very mature, offering only limited capacity for technical change and development, and FM spectrum is now largely fully occupied in population dense areas. In addition, AM transmissions face growing pressure from urban development and related increasing signal interference. The Australian radio industry therefore retains a strong interest in the opportunities presented by digital radio for service innovation and future growth. To date, digital terrestrial radio services have been licensed for the five mainland state capital cities,1 and trials involving such services are underway in Canberra and Darwin. Within the mainland state capital cities, take up of digital terrestrial radio services continues to grow slowly but steadily with listenership reaching almost 25 per cent in the first quarter of 2015.2 Listenership has benefitted from increased availability of digital radio receivers in motor vehicles (a primary source of listening) and the recent additional rollout of in-fill transmitters increasing coverage of the services in Brisbane, Melbourne, Perth and Sydney. The cost and complexity of rolling out Digital Audio Broadcasting Plus (DAB+)-based digital terrestrial radio services across regional Australia3 present major challenges for the industry. The need to cover large geographic areas with small and dispersed populations offers unique challenges which have not been faced in many international markets. At the same time, Australians are rapidly adopting new types of technology with the growth of online audio platforms such as Spotify and Pandora. These services are complementing the move by traditional radio businesses—most notably the national broadcasters—to deliver radio services online or through mobile apps. The announcement by Apple of a move into the streamed audio market will only increase the choices available to audiences. These services may herald a generational change in listening habits with significant implications for traditional platforms over time. That said, there are ongoing challenges with the bandwidth and data transmission requirements of these services being delivered to large audiences over mobile and wireless platforms. The digital terrestrial radio industry is subject to a range of regulatory requirements in the Broadcasting Services Act 1992 (the BSA) and the Radiocommunications Act 1992 (the Radiocommunications Act), which govern matters such as the planning and start up of services, and the sharing of and access to the transmission multiplex in each area. Against the background of changes in the radio industry, this review considers whether changes are required to this framework to provide greater flexibility to the industry and the Australian Communications and Media Authority (the ACMA) to plan for change and ensure that the radio industry is well placed to determine its future strategies for digital services. Key issues examined by the review included: the current state of digital terrestrial radio in Australia, and the impacts of alternative technologies on the industry and listeners; whether Australia should set a digital switchover date for analogue commercial, national, community or other terrestrially transmitted radio services; what legislative/regulatory arrangements should be in place to assist the rollout of digital terrestrial radio services in regional areas; and whether changes are required to the legislative regime for digital radio, including to reduce the regulatory burden on industry

Benchmarking news recommendations: the CLEF NewsREEL use case

The CLEF NewsREEL challenge is a campaign-style evaluation lab allowing participants to evaluate and optimize news recommender algorithms. The goal is to create an algorithm that is able to generate news items that users would click, respecting a strict time constraint. The lab challenges participants to compete in either a "living lab" (Task 1) or perform an evaluation that replays recorded streams (Task 2). In this report, we discuss the objectives and challenges of the NewsREEL lab, summarize last year's campaign and outline the main research challenges that can be addressed by participating in NewsREEL 2016