This research is designed to explore the areas of collaborative learning and the use of smartphones as a support for collaborative learning through a year-long exploratory multiple case study approach integrating both qualitative and quantitative data analysis. Qualitative exploratory interviews are combined with Multidimensional Scaling Analysis to provide a detailed image of students’ mobile ...

Penelitian ini bertujuan adalah untuk menilai dan menelahah atribut dalam dimensi ekologi teknologi yang berpengaruh terhadap keberlanjutan pengelolaan tanaman padi secara terpadu melalui program SL-PTT pengembangan sawah di tingkat petani upaya meningkatkan produktivitas berkelanjutan, besarnya peluang penerapan pelaksanaan Kabupaten Musi Rawas diujicoba menggunakan metode Multi Dimensional Sc...

The self-organising map (SOM) and its variant, visualisation induced SOM (ViSOM), have been known to yield similar results to multidimensional scaling (MDS). However, the exact connection has not been established. In this paper, a review on the SOM and its cost function and topological measures is provided first. We then examine the exact scaling effect of the SOM and ViSOM from their objective...

Multidimensional perceptual unfolding was executed for a set of spatially-processed speech samples reproduced via headphones. This paper describes only the first stage of a two-part study employing the analytic technique termed external unfolding. In this first stage, global dissimilarity ratings were made for all pairwise comparisons of the experimental stimuli under each of four listening con...

The graphical representation method, Robust CoPlot, is a robust variant of the classical CoPlot method. CoPlot is an adaptation of multidimensional scaling (MDS), and is a practical tool for visual inspection and rich interpretation of multivariate data. CoPlot enables presentation of a multidimensional dataset in a two dimensions, in a manner that relations between both variables and observati...

Influenza viruses have been responsible for large losses of lives around the world and continue to present a great public health challenge. Antigenic characterization based on hemagglutination inhibition (HI) assay is one of the routine procedures for influenza vaccine strain selection. However, HI assay is only a crude experiment reflecting the antigenic correlations among testing antigens (vi...

We discuss interactive techniques for multidimensional scaling (MDS) and a system, named \XGvis", that implements these techniques. MDS is a method for visualizing proximity data, that is, data where objects are characterized by dissimilarity values for all pairs of objects. MDS constructs maps of these objects in IR k by interpreting the dissimilarities as distances. MDS in its conventional ba...

We propose here a parallel implementation of multidimensional scaling (MDS) method which can be used for visualization of large datasets of multidimensional data. Unlike in traditional approaches, which employ classical minimization methods for finding the global optimum of the “stress function”, we use a heuristic based on particle dynamics. This method allows avoiding local minima and is conv...

Ashby, Maddox and Lee (Psychological Science, 5 (3) 144) argue that it can be inappropriate to fit multidimensional scaling (MDS) models to similarity or dissimilarity data that have been averaged across subjects. They demonstrate that the averaging process tends to make dissimilarity data more amenable to metric representations, and conduct a simulation study showing that noisy data generated ...