Distributed Text Services (DTS): A Community-Built API to Publish and Consume Text Collections as Linked Data

This paper presents the Distributed Text Service (DTS) API Specification, a community-built effort to facilitate the publication and consumption of texts and their structures as Linked Data. DTS was designed to be as generic as possible, providing simple operations for navigating collections, navigating within a text, and retrieving textual content. While the DTS API uses JSON-LD as the serialization format for non-textual data (e.g., descriptive metadata), TEI XML was chosen as the minimum required format for textual data served by the API in order to guarantee the interoperability of data published by DTS-compliant repositories. This paper describes the DTS API specifications by means of real-world examples, discusses the key design choices that were made, and concludes by providing a list of existing repositories and libraries that support DTS

A Cryogenic Silicon Interferometer for Gravitational-wave Detection

The detection of gravitational waves from compact binary mergers by LIGO has opened the era of gravitational wave astronomy, revealing a previously hidden side of the cosmos. To maximize the reach of the existing LIGO observatory facilities, we have designed a new instrument that will have 5 times the range of Advanced LIGO, or greater than 100 times the event rate. Observations with this new instrument will make possible dramatic steps toward understanding the physics of the nearby universe, as well as observing the universe out to cosmological distances by the detection of binary black hole coalescences. This article presents the instrument design and a quantitative analysis of the anticipated noise floor

Search for gravitational-lensing signatures in the full third observing run of the LIGO-Virgo network

Gravitational lensing by massive objects along the line of sight to the source causes distortions of gravitational wave-signals; such distortions may reveal information about fundamental physics, cosmology and astrophysics. In this work, we have extended the search for lensing signatures to all binary black hole events from the third observing run of the LIGO--Virgo network. We search for repeated signals from strong lensing by 1) performing targeted searches for subthreshold signals, 2) calculating the degree of overlap amongst the intrinsic parameters and sky location of pairs of signals, 3) comparing the similarities of the spectrograms amongst pairs of signals, and 4) performing dual-signal Bayesian analysis that takes into account selection effects and astrophysical knowledge. We also search for distortions to the gravitational waveform caused by 1) frequency-independent phase shifts in strongly lensed images, and 2) frequency-dependent modulation of the amplitude and phase due to point masses. None of these searches yields significant evidence for lensing. Finally, we use the non-detection of gravitational-wave lensing to constrain the lensing rate based on the latest merger-rate estimates and the fraction of dark matter composed of compact objects

TeXQuery: A Full-Text Search Extension to XQuery (Part II: Formal Semantics)

This report describes the formal semantics of TeXQuery. TeXQuery is a full-text search extension to XQuery

TeXQuery: A Full-Text Search Extension to XQuery (Part I: Language Specification)

This report describes the TeXQuery language specification. TeXQuery is a full-text search extension to XQuery

TeXQuery: A Full-Text Search Extension to XQuery (Part III: Use Cases Solutions)

This report describes the TeXQuery use cases solutions. TeXQuery is a full-text search extension to XQuery

XQuery, XSLT and JSON

XML and JSON have become the dominant formats for exchanging data on the Internet, and applications frequently need to send and receive data in many different JSON-based or XML-based formats, consuming or producing data in JSON, XML, or HTML. JSON has not yet developed an application stack as mature as the XML application stack; for instance, there is still no standard query language, transformation language, or schema language. And the XML application stack has not yet evolved to easily process JSON. There are several areas where the XML stack should evolve to better support developers who work with JSON together with XML, and the features needed to support JSON in XQuery and XSLT also provide data structures that simplify writing queries and transformations, and allow more efficient processing of intermediate results when processing XML. As JSON becomes increasingly common in databases, and is exchanged among servers, these same kinds of tools may even become important in environments that use only JSON. This paper focuses on queries and transformations, looking at JSON support in several NoSQL databases, the JSONiq proposal (which adds JSON objects and arrays to XQuery), and the XSLT maps proposal (which adds maps that can represent JSON objects and arrays). At the time of writing, the W3C XML Query Working Group and the W3C XSL Working Group are considering several proposals for supporting JSON. The Working Groups expect to agree on a common solution that can be used in both XSLT and XQuery.</jats:p