18 research outputs found
Unsupervised Learning of Style-sensitive Word Vectors
This paper presents the first study aimed at capturing stylistic similarity
between words in an unsupervised manner. We propose extending the continuous
bag of words (CBOW) model (Mikolov et al., 2013) to learn style-sensitive word
vectors using a wider context window under the assumption that the style of all
the words in an utterance is consistent. In addition, we introduce a novel task
to predict lexical stylistic similarity and to create a benchmark dataset for
this task. Our experiment with this dataset supports our assumption and
demonstrates that the proposed extensions contribute to the acquisition of
style-sensitive word embeddings.Comment: 7 pages, Accepted at The 56th Annual Meeting of the Association for
Computational Linguistics (ACL 2018
Scanning Tunneling Thermometry
Temperature imaging of nanoscale systems is a fundamental problem which has
myriad potential technological applications. For example, nanoscopic cold spots
can be used for spot cooling electronic components while hot spots could be
used for precise activation of chemical or biological reactions. More
fundamentally, imaging the temperature fields in quantum coherent conductors
can provide a wealth of information on heat flow and dissipation at the
smallest scales. However, despite significant technological advances, the
spatial resolution of temperature imaging remains in the few nanometers range.
Here we propose a method to map electronic temperature variations in operating
nanoscale conductors by relying solely upon electrical tunneling current
measurements. The scanning tunneling thermometer, owing to its operation in the
tunneling regime, would be capable of mapping sub-angstrom temperature
variations, thereby enhancing the resolution of scanning thermometry by some
two orders of magnitude.Comment: Main article has 11 pages and 3 figures. Supplementary Information
has 9 pages and 4 figure