Abstract We introduce ART, a new corpus-level autoencoding approach for training dense retrieval models that does not require any labeled data. Dense is central challenge open-domain tasks, such as Open QA, where state-of-the-art methods typically large supervised datasets with custom hard-negative mining and denoising of positive examples. in contrast, only requires access to unpaired inputs o...

This paper proposes a novel method to extract paraphrases of Japanese noun phrases from a set of documents. The proposed method consists of three steps: (1) retrieving passages using character-based index terms given a noun phrase as an input query, (2) filtering the retrieved passages with syntactic and semantic constraints, and (3) ranking the passages and reformatting them into grammatical f...

Background & Aims: Induced pluripotent stem cells (iPSCs) have the capability to undergo unlimited selfrenewal and differentiation into all cell types in the body. These cells are artificially derived from a nonpluripotent cell, typically human dermal fibroblasts (HDFs). The study of cytogenetic stability of these cells, in order to use iPS cells and apply studies in therapeutic applications, i...

Passages can be hidden within a text to circumvent their disallowed transfer. Such release of compartmentalized information is of concern to all corporate and governmental organizations. Passage retrieval is well studied; we posit, however, that passage detection is not. Passage retrieval is the determination of the degree of relevance of blocks of text, namely passages, comprising a document. ...

The purpose of this study was to examine the effects of interleaving and expanding retrieval on the retention of physiology concepts. Participants (n = 189) read and then reread 30 immunology and reproductive physiology passages. Half of the participants read and then reread the passages in a blocked manner (e.g., a(1)a(2)a(3)b(1)b(2)b(3)), and the other half did so in an interleaved manner (e....

Cytogenetic analysis at the 15th, 34th, 50th, and 56th passages of an SV40 immortalized human uroepithelial cell line (SV-HUC-1) showed continuous chromosome change and marker formation. Throughout these passages the transformed cells maintained their epithelial morphology, were SV40 T antigen positive, did not shed infectious SV40 virus, and were repeatedly found to be nontumorigenic when inno...

Background: The aim of this study was to develop methods for cryopreservation and long-term maintenance of putative bovine embryonic stem cells (ESCs). Materials and Methods: Putative bovine ESC (bESC) lines (n=3) isolated in conventional medium were used to compare slow-freezing and vitrification. Results: After warming, vitrified cells (96.9%) demonstrated significantly (p<0.05) better surviv...

Unfamiliarity with search tactics creates difficulties for many users of online retrieval systems. User observations indicate that even experienced searchers use vocabulary incorrectly and rarely reformulate their queries. To address these problems, an expert system for online search assistance was developed. This prototype automatically reformulates queries to improve the search results, and r...

Nasal decontamination may be indicated when the anterior nasal passages are contaminated with highly radioactive material or radioactive material with either irritating or toxic properties. Nasal irrigation (wash, rinse, douche, lavage) is an established technique used for other conditions and can be applied in these cases. This paper discusses the rationale and use of nasal irrigation and how ...

Unfamiliarity with search tactics creates difficulties for many users of online retrieval systems. User observations indicate that even experienced searchers use vocabulary incorrectly and rarely reformulate their queries. To address these problems, an expert system for online search assistance was developed. This prototype automatically reformulates queries to improve the search results, and r...