a way to evaluate researchers
The evaluation of the career of a researcher and its impact on the research community has been deeply studied in literature through the definition of several measures, first among all the h-index and its variations. Although these measures represent valuable tools for analyzing researchers’ outputs, they usually assume the co-authorship to be a proportional collaboration between the parts, missing out their relationships and the relative scientific influences. This web application is based on d-index, a novel measure that estimates the dependency degree between authors according to their research environment and along their entire scientific publication history. It proposes a number of visualization tools for analyzing and comparing the careers of all the scientists in the DBLP bibliographic database.
d-index is available at: http://d-index.di.unito.it
a context-aware navigation system
The CoSeNa System propose an innovative approach to document exploration and retrieval. It allows user to explore text collections leveraging a novel keywords-by-concepts (KbC) graph model, which supports navigation using domain-specific concepts as well as keywords that are characterizing the text corpus. The KbC graph is a weighted graph, created by tightly integrating keywords extracted from documents and concepts obtained from domain taxonomies and supports contextually informed access to these documents.
CoSeNa is available at: http://hdm.di.unito.it/res/CoSeNa.zip
navigable hierarchies of tag clouds
TMine organizes tags extracted from textual content in hierarchical organizations, suitable for navigation, visualization, classification, and tracking. TMine extracts the most significant tag/terms from text documents and maps them onto a hierarchy in such a way that descendant terms are contextually dependent on their ancestors within the given corpus of documents. This offers a mechanism for enabling navigation within the tag space and for classification of the text documents based on the contextual structure captured by the created hierarchy. Tmine is language neutral, since it does not rely on any natural language processing technique and is unsupervised.
TMine is available at: http://hdm.di.unito.it/applications.html
a tool for text visualization
PhC (Parallel Hierarchical Coordinates) is a visualization tool for text corpora. It is based on a controlled clutter reduction approach for reducing the visual clutter in Parallel Coordinates-based visualizations.
PhC is available at: http://hdm.di.unito.it/applications.html
a pattern development view system for multidimensional scientific data visualization
pDView, the pattern development view, is a system for multidimensional scientific data visualization. The pDView system relies on a novel pattern development tree (pDTree) structure to unravel patterns in multidimensional data without having to rely on visualizations that require either significant degrees of projections that eliminate certain dimensions at the expense of the others or introduce significant visual overhead due to overly-rich multi-dimensional graphic interfaces. Instead, pDView maps data along all its relevant dimensions onto a pDTree structure, capturing and visualizing the underlying fundamental relationships. The user is able to vary contextual parameters to observe the strength and robustness of these relationships under different situations.
pDView is available at: http://hdm.di.unito.it/applications.html
an image-based text exploration system
ImmEx is a novel visual navigational system for an immersive exploration of text documents that overcomes these problems by leveraging the intuitiveness of semantically-related images, retrieved in real-time from popular image sharing services. ImmEx lets independently explore large text collection through a novel approach that exploits the directness of the images and their user-generated metadata. We finally analyze the efficiency and usability of the proposed system by providing case and user studies.