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Unlabeled documents vastly outnumber labeled documents in text classification. For this reason, semi-supervised learning is well suited to the task. Representing text as a combination of unigrams and bigrams has not shown consistent improvements compared to using uni-grams in supervised text classification. Therefore, a natural question is whether this(More)
Recent advances in information technology are making electric household appliances computerized and networked. If our environments could intuit our activities , e.g., by sensors, novel services taking anticipated actions into account would become possible. We propose activity recognition that infers a subject's next action based on previously observed(More)
In this paper, we propose the human behavior detection and activity support environment Vivid Room. Human behaviors in Vivid Room are detected by many kinds of sensors embedded in the room (i.e. magnet sensors for doors/drawers, micro-switches for chairs, ID-tags for humans.) and that information is collected by sensor server via RF-tag system and LAN. In(More)
We propose a new concept, raison d'ˆ etre objects, and a new ware, cyber-hearth, that affords snugness in face-to-face communication in a shared informal place such as a refreshing room or lounge. We carried out observation experiments on the behavior of individuals in such a place and found interesting tendencies: most people behave unconsciously to pay(More)
Immunoglobulin G4-related disease (IgG4-RD) is a recently discovered systemic condition, in which various organ manifestations are linked by a similar histological appearance. Our knowledge of this condition is still fragmented, as most studies have examined only a few dozen patients or focused on a particular organ manifestation. This study was conducted(More)
Homeostatic plasticity is considered to maintain activity in neuronal circuits within a functional range. In the absence of homeostatic plasticity neuronal activity is prone to be destabilized because Hebbian plasticity mechanisms induce positive feedback change. Several studies on homeostatic plasticity assumed the existence of a process for monitoring(More)