05 Oct 2018

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Etching on a laser cutter

I've been struggling with this for ages , but yesterday at Hackspace - thanks to Barney (and I now realise, Tiff said this too and I got distracted and never followed it up) - I got it to work. The issue was this: I'd been assuming that everything you lasercut had to be a vector DXF, so I was tracing bitmaps using inkscape in order to make a suitable SVG, converting to DXF, loading it into the lasercut software at hackspace, downloading it and - boom - "the polyline must be closed" for etching: no workie. No matter what I ...

05 Oct 2018 12:45pm GMT

01 Oct 2018

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paper: Early Detection of Cybersecurity Threats Using Collaborative Cognition

The CCS Dashboard's sections provide information on sources and targets of network events, file operations monitored and sub-events that are part of the APT kill chain. An alert is generated when a likely complete APT is detected after reasoning over events. Early Detection of Cybersecurity Threats Using Collaborative Cognition Sandeep Narayanan, Ashwinkumar Ganesan, Karuna Joshi, Tim Oates, Anupam Joshi and Tim Finin, Early detection of Cybersecurity Threats using Collaborative Cognition , 4th IEEE International Conference on Collaboration and Internet Computing, Philadelphia, October. 2018. The early detection of cybersecurity events such as attacks is challenging given the constantly evolving threat ...

01 Oct 2018 1:20pm GMT

28 Sep 2018

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Property Path use in Wikidata Queries

I recently began taking a look at the Wikidata query logs that were published a couple of months ago and wanted to look into how some features of SPARQL were being used on Wikidata. The first thing I've looked at is the use of property paths: how often paths are used, what path operators are used, and with what frequency. Using the "interval 3" logs (2017-08-07-2017-09-03 representing ~78M successful queries 1 ), I found that ~25% of queries used property paths. The vast majority of these use just a single property path, but there are queries that use as many ...

28 Sep 2018 5:06pm GMT

23 Sep 2018

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talk: Design and Implementation of an Attribute Based Access Controller using OpenStack Services

Design and Implementation of an Attribute Based Access Controller using OpenStack Services Sharad Dixit, Graduate Student, UMBC 10:30am Monday, 24 September 2018, ITE346 With the advent of cloud computing, industries began a paradigm shift from the traditional way of computing towards cloud computing as it fulfilled organizations present requirements such as on-demand resource allocation, lower capital expenditure, scalability and flexibility but with that it brought a variety of security and user data breach issues. To solve the issues of user data and security breach, organizations have started to implement hybrid cloud where underlying cloud infrastructure is set by the organization ...

23 Sep 2018 7:44pm GMT

Panic over "superhuman" AI

Robot overlords not on the way.

23 Sep 2018 4:27pm GMT

22 Sep 2018

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Simulating crap networks on a Raspberry Pi

I've been having trouble with libbybot (my Raspberry Pi / lamp based presence robot) in some locations. I suspect this is because the Raspberry Pi 3's inbuilt wifi antenna isn't as strong as that in, say a laptop, so wifi problems that go unnoticed most of the time are much more obvious. The symptoms are these: Happily listening / watching remotely Stream dies I get a re-notification that libbybot is online, but can't connect to it properly My hypothesis is that the Raspberry Pi is briefly losing wifi connectivity, Chromium auto-reconnects, but the webRTC stream doesn't re-initiate. Anyway, the first step ...

22 Sep 2018 12:40pm GMT

17 Sep 2018

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A Successful DCMI 2018 Conference

The DCMI Annual Conference was held last week, hosted by the Faculty of Engineering of the University of Porto, Portugal. The conference was co-located with TPDL which meant that while many people arrived as part of one community, all left with the experience and appreciation of two! The full conference proceedings are now available, with copies of presentation slides where appropriate. Some photographs of the conference can be found on Flickr, tagged with 'dcmi18'.

17 Sep 2018 12:00am GMT

15 Sep 2018

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Wikidata Query Service recipe: qualifiers and the Greek alphabet

Just because I need to look this up each time myself, I wrote up this quick recipe for how to get information from statement qualifiers from Wikidata . Let's say, I want to list all Greek letters, with in one column the lower case and in the other the upper case letter. This is what our data looks like: So, let start with a simple query that lists all letters in the Greek alphabet: SELECT ?letter WHERE { ?letter wdt:P361 wd:Q8216 . } Of course, that only gives me the Wikidata entries, and not the Unicode characters we are ...

15 Sep 2018 9:12am GMT

13 Sep 2018

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AskNow 0.1 Released

Dear all, we are very happy to announce AskNow 0.1 - the initial release of Question Answering Components and Tools over RDF Knowledge Graphs. Website: http://asknow.sda.tech/ Demo: http://asknowdemo.sda.tech GitHub: https://github.com/AskNowQA The following components with corresponding features are currently supported by AskNow: EARL 0.1 EARL performs entity linking and relation linking as a joint task. It uses machine learning in order to exploit the Connection Density between nodes in the knowledge graph. It relies on three base features and re-ranking steps in order to predict entities and relations. ISWC 2018: https://arxiv.org/pdf/1801.03825.pdf Demo: https://earldemo.sda.tech/ Github: https://github.com/AskNowQA/EARL SQG 0.1: This is a SPARQL ...

13 Sep 2018 1:35pm GMT

Webinar: SKOS - Overview and Modeling of Controlled Vocabularies

This webinar is scheduled for Thursday, October 11, 2018, 14:00 UTC (convert this time to your local timezone here) and is free for DCMI members. SKOS (Simple Knowledge Organization Systems) is the recommendation of the W3C to represent and publish datasets for classifications, thesauri, subject headings, glossaries and other types of controlled vocabularies and knowledge organization systems in general. The first part of the webinar includes an overview of the technologies of the semantic web and shows in detail the different elements of the SKOS model.

13 Sep 2018 12:00am GMT

Webinar: SKOS - Overview and Modeling of Controlled Vocabularies

This webinar is scheduled for Thursday, October 11, 2018, 14:00 UTC ([convert this time to your local timezone here]()) and is free for DCMI members. SKOS (Simple Knowledge Organization Systems) is the recommendation of the W3C to represent and publish datasets for classifications, thesauri, subject headings, glossaries and other types of controlled vocabularies and knowledge organization systems in general. The first part of the webinar includes an overview of the technologies of the semantic web and shows in detail the different elements of the SKOS model.

13 Sep 2018 12:00am GMT

11 Sep 2018

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JSON-LD Guiding Principles, First Public Working Draft

Coming to consensus is difficult in any working group, and doubly so when the working group spans a broad cross-section of the web community. Everyone brings their own unique set of experiences, skills and desires for the work, but at the end of the process, there can be only one specification. In order to provide a framework in which to manage the expectations of both participants and other stakeholders, the JSON-LD WG started out by establishing a set of guiding principles . These principles do not constrain decisions, but provide a set of core aims and established consensus to reference ...

11 Sep 2018 10:19pm GMT

08 Sep 2018

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Also new this week: "Google Dataset Search"

There was a lot of Open Science news this week. The announcement of the Google Dataset Search was one of them: Of course, I first tried searching for " RDF chemistry " which shows some of my data sets (and a lot more): It picks up data from many sources, such as Figshare in this image. That means it also works (well, sort of, as Noel O'Boyle noticed ) for supplementary information from the Journal of Cheminformatics . It picks up metadata in several ways, among which schemas.org . So, next week we'll see if we can get eNanoMapper extended ...

08 Sep 2018 9:13am GMT

27 Aug 2018

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Pipelining SPARQL queries in memory with the rdflib Python library

Using retrieved data to make more queries.

27 Aug 2018 1:55pm GMT

18 Aug 2018

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Compound (class) identifiers in Wikidata

Bar chart showing the number of compounds with a particular chemical identifier. I think Wikidata is a groundbreaking project, which will have a major impact on science. One of the reasons is the open license (CCZero), the very basic approach ( Wikibase ), and the superb community around it. For example, setting up your own Wikibase including a cool SPARQL endpoint, is easily done with Docker . Wikidata has many sub projects, such as WikiCite , which captures the collective of primary literature. Another one is the WikiProject Chemistry . The two nicely match up, I think, making a public ...

18 Aug 2018 12:46pm GMT

09 Aug 2018

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09 Aug 2018 11:59am GMT