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Understanding changes in the mood and mentalhealth of large populations is a challenge, with the need for largenumbers of samples to uncover any regular patterns within thedata. The use of data generated by online activities of healthyindividuals offers the opportunity to perform such observationson the large scales and for the long periods that are required. Various studies have previously examined...
Investigating learning performance predictors is an important part of the educational process. Active participation or engagement is one such predictor, which has been widely analyzed in traditional learning settings, but less in the emerging social-media based learning environments. This paper explores the relationship between students' active participation on three social media tools (wiki, blog,...
Analysis of digital discourse in social networks can inform decisions about service design and align services with customers' needs and expectations. Using the theory of social representations (SRT) as a theoretical lens, I propose a method for the systematic analysis of the digital discourse in order to identify the core representations on which a service depends. I demonstrate the method by analyzing...
Social networking or social media sites are involvedin our daily life. With the increasing popularity of socialmedia sites like Twitter and Facebook, people are using theirsocial network to find answers to their questions. Not everysocial media site can answer a user's question. Different socialmedia sites have different strength such as the StackOverflowcommunity has specific interest in programming...
Document classification or document categorization is one of the most studied areas in computer science due to its importance. The problem is to assign a document using its text to one or more classes or categories from a predefined set. We propose a new approach for fast text classification using randomized explicit semantic analysis (RS-ESA). It is based on a state of the art approach for word sense...
The use of Social Media for event detection, such as detection of natural disasters, has gained a booming interest from research community as Social Media has become an immensely important source of real-time information. However, it poses a number of challenges with respect to high volume, noisy information and lack of geo-tagged data. Extraction of high quality information (e.g., Accurate locations...
This quantitative study explores students' motivation towards the use of wikis to encourage self-directed learning (SDL) and collaborative learning (CoL). SDL and CoL are the goals for Singapore's Ministry of Education Information and Communication Technology Masterplan 3. Wikis were used in the project to support reflection and communication within groups. Five classes consisting of 181 Secondary...
Review of knowledge management practices of officers at the Ministry of Foreign Affairs in Kuwait revealed that knowledge workers in the public sector frequently use social media and networking tools to enhance their personal knowledge. They stay in touch with their contacts through email and telephone. Twitter is on the top of the list of social networking tools they use while email management tools...
This paper explores the automatic detection of sentences that are opinionated claims, in which the author expresses a belief. We use a machine learning based approach, investigating the impact of features such as sentiment and the output of a system that determines committed belief. We train and test our approach on social media, where people often try to convince others of the validity of their opinions...
The aim of the paper is to address the question how social media can be successfully used for trust and reputation building in the learning function, in particular for eLearning at the workplace in organizations. The article consolidates the findings in a frame of reference with a two folded approach from a management perspective (using social media to organize learning) as well as from a learning...
Wikipedia arguably is one of the most visible examples of the use of social media to enlist volunteers to contribute to a social good. Wikipedia was created to provide an accessible, encyclopedic information resource for people of all nations and cultures. Previous research has shown potential for unacknowledged cultural bias in socio-technical systems. However, the extent to which the technological...
Word processing was one of the earliest uses for small workstations, but we quickly learned that desktop computers were far more than e-typewriters. Similarly, social media offers tools that could significantly improve our effectiveness at managing the avalanche of information and decisions associated with space flight projects. However, “could” does not necessarily equal “should”. We must wield two-edged...
Term suggestion techniques recommend query terms to a user based on his initial query. Providing adequate term suggestions is a challenging task. Most existing commercial search engines suggest search terms based on the frequency of prior used terms that match the first few letters typed by the user. We present a novel mechanism to construct semantic term-relation graphs to suggest semantically relevant...
Wikipedia is used every day by people all around the world, to satisfy a variety of information needs. We cross-correlate multiple Wikipedia traffic data sets to infer various behavioral features of its users: their usage patterns (e.g., as a reference or a source); their motivations (e.g., routine tasks such as student homework vs. information needs dictated by news events); their search strategies...
Wikipedia is widely known encyclopedia in the web updated by volunteers around the world. Mobile and location based wiki with NFC, however, brings forward the idea of using Near Field Communication tags as an enabler for seeking information content from wiki. In this paper we shortly address how NFC infrastructure can be created in a city for the use of location-based wiki. The users of the system...
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