30 research outputs found

    State transitions in searches for diseases with above-median (top) and below-median (middle) 5-year survival, together with the most likely output states of the HMMs (bottom).

    No full text
    <p>The state transitions for cancers with below-median survival are more string-like, with the first two states being the most stable states. Conversely, the state diagrams for the more indolent diseases are highly interconnected, transitions between states are more symmetric, and the most stable states are the last three states. The table shows all page categories (observable states) with a probability greater than 0.05 for each of the hidden HMM states, ordered by decreasing likelihood. While output states are similar for both groups of diseases, they are ranked differently. Furthermore, searchers for cancers with below-median survival look for treatment information later in the search process. Interestingly, support only appears as a significant output state for indolent cancers.</p

    Prediction error as a function of the number of hidden states.

    No full text
    <p>This graph shows the average error in predicting the page category that a 25% subset of the population of users will browse, given their past browsing behavior and the model of user searches constructed using a different subset (the remaining 75%) of the population. The lowest error is reached for 5 hidden states, suggesting that users pass through five phases of search during their search process.</p

    Overview of model of search pattern.

    No full text
    <p>a. When patients are diagnosed with cancer, they obtain information from physicians, the Internet and their friends and family. By characterizing patients information-seeking pattern we can better understand patients' needs. B. Patterns of Internet search reflect underlying psychological states. Most likely output states identified by HMMs are similar for both indolent and aggressive diseases and are represented by the colored squares. However, searchers for information on aggressive cancers look for treatment information later in the search process, while support only appears as a significant output state for indolent cancers. C. Time-line of cancer-related search by the proband seeker (most likely the patient or his primary caregiver) and other acquaintances. Acquaintances are very active searchers for aggressive diseases but much less so for indolent diseases, with a shorter search period which does not overlap with that of the initial searchers.</p

    Categories of Web pages and the number of pages labeled within the category by Mechanical Turk.

    No full text
    <p>Categories of Web pages and the number of pages labeled within the category by Mechanical Turk.</p

    Pre- and post-training plasma levels of cardiac biomarkers.

    No full text
    <p>Results are presented as median (inter-quartile range).</p><p>BNP  =  brain natriuretic peptide; CRP = C reactive protein.</p

    Echocardiographic parameters.

    No full text
    <p>LA = left atrium; LV = left ventricle; IVRT = iso-volumic relaxation time; RVFAC = right ventricular fractional area change; RA = right atrium.</p
    corecore