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

16 Dec 2013

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The new Data Activity at W3C

This is the last entry in this blog… A few days ago W3C started a new activity, called Data Activity, that also subsumes the (by now old) Semantic Web Activity. In order to have a fresh start, and to avoid … Continue reading

16 Dec 2013 9:22am GMT

08 Nov 2013

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RDF Json Alternate Serialization (RDF/JSON) Published

The RDF Working Group has published a Group Note of RDF 1.1 JSON Alternate Serialization (RDF/JSON). The Resource Description Framework (RDF) is a framework for representing information in the Web. This document defines a textual syntax for RDF called RDF/JSON that allows an … Continue reading

08 Nov 2013 9:28pm GMT

06 Nov 2013

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Proposed Recommendations for JSON-LD

The RDF Working Group has published two Proposed Recommendations today: JSON-LD 1.0. JSON is a useful data serialization and messaging format. This specification defines JSON-LD, a JSON-based format to serialize Linked Data. The syntax is designed to easily integrate into deployed systems … Continue reading

06 Nov 2013 10:02pm GMT

19 Jan 2012

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Mon intervention lors de l’inauguration du Retour à la Terre Rive Gauche

En attendant la publication des photos et vidéos sur le site du Retour à la Terre , voici le texte que j’avais préparé pour mon intervention lors de l’inauguration officielle du magasin de la Rive Gauche le 18 janvier. Catherine est inquiète parce qu’elle ne sait pas ce que je veux vous dire ce soir… Elle me connaît pourtant bien puisque cela fait plus de trente ans que nous vivons ensemble ! Nous avons la chance d’avoir étudié dans une grande école (l’École Centrale) où nous nous sommes rencontrés mais avons toujours eu du mal à nous intégrer au monde des ...

19 Jan 2012 12:59pm GMT

Yak shaving

If your brain works the way mine does, you often find yourself doing a variety of related but not necessary tasks along the way to fulfilling a larger goal. For some reason, the history of which I’m not entirely sure, this is called “yak shaving.” Some of my finest work has been done that way, so I’m happy to embrace it, even if I do add hours to the job at hand. This week’s yak shaving has neared epic proportions, but proved eminently satisfying. I’ve been working on collecting together an overview of big data products. It’s early days yet ...

19 Jan 2012 12:13am GMT

18 Jan 2012

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HttpURLConnection’s Dark Secrets

If you’re programming in the Java language and want to talk to a Web server, there are several libraries you can choose from. HttpURLConnection is one popular choice, and for Android programming, the engineering team has now officially suggested that you use it where possible. Since there are irritating orthographical and Web-Architecture issues with the name “HttpURLConnection”, let’s just say HUC. HUC is reasonably well documented, if by “reasonably well” you mean “omits any discussion of the relationship between method calls and underlying HTTP traffic”. Let me fill that in. Who knows, maybe some JavaDocs maintainer somewhere will feel inspired ...

18 Jan 2012 11:17pm GMT