Multiview Clustering

672 papers in all. In this report we examine the research themes evident in these papers and identify the most active research topics in CBR. At the 2008 conference we presented an analysis of the research themes in CBR, based on an analysis of the cocitation links in the research literature (Greene et al. 2008). That analy-sis was based on the core set of 672 papers from the CBR con-ferences with cocitation data coming from a set of 3461 papers that cite these papers (details on how cocitation links are deter-mined are given later in the article). While cocitation analysis has been proven to be very effective at uncovering relational structure in the research literature (White and Griffith 1981), it has the shortcoming that recent papers will have few cocitation links as papers citing pairs of papers in the core set (that is, the source of cocitation links) have not yet appeared. This issue is evident in the plot of citation counts shown in figure 1 and ulti-mately makes it impossible to recognize the influence of more recent papers. We improve on this analysis here by integrating a new source of relational data based on text similarity with the existing coc