DUKweb, diachronic word representations from the UK Web Archive corpus.

Lexical semantic change (detecting shifts in the meaning and usage of words) is an important task for social and cultural studies as well as for Natural Language Processing applications. Diachronic word embeddings (time-sensitive vector representations of words that preserve their meaning) have become the standard resource for this task. However, given the significant computational resources needed for their generation, very few resources exist that make diachronic word embeddings available to the scientific community. In this paper we present DUKweb, a set of large-scale resources designed for the diachronic analysis of contemporary English. DUKweb was created from the JISC UK Web Domain Dataset (1996-2013), a very large archive which collects resources from the Internet Archive that were hosted on domains ending in '.uk'. DUKweb consists of a series word co-occurrence matrices and two types of word embeddings for each year in the JISC UK Web Domain dataset. We show the reuse potential of DUKweb and its quality standards via a case study on word meaning change detection.

Do psychopathic traits impair autobiographical memory for emotional life experiences?

We examined the relationship between psychopathic traits and autobiographical memory (AM) for emotional life experiences in both a community (Study 1) and forensic sample (Study 2). Considering that psychopathy is traditionally linked to an impairment in the processing of emotion, we hypothesised an emotional deficit of AM in individuals with high levels of psychopathic traits. Participants in both samples were asked to recall an emotionally charged event, and were then administered the Psychopathic Personality Inventory-Revised, the Flashbulb Memory Checklist, and the Autobiographical Memory Characteristics Questionnaire. A linguistic content analysis was applied to inmates' memory transcriptions (Study 2). Only in the forensic sample, was self-centered impulsivity found to be positively related to the linguistic use of mood terms, and negatively related to the linguistic use of cognitive labels. Furthermore, high levels of fearless dominance were associated to a low emotional attribution to the event and its implications, and highly confident and coherent memory. Lastly, coldheartedness was the psychopathic trait most associated to a deficit in emotional AM, in terms of a lack of hedonic labels and contextual details, a poor emotional evaluation of the event and its implications. The current results encourage further investigation concerning AM in psychopathic traits.