Bob DuCharme's Avatar

Bob DuCharme

@bobdc.bsky.social

Senior Technical Writer at Graphwise (opinions mine, not theirs). Wrote O'Reilly's "Learning SPARQL" and some other geeky books.

147 Followers  |  22 Following  |  96 Posts  |  Joined: 17.12.2023  |  1.8921

Latest posts by bobdc.bsky.social on Bluesky

What does it mean to claim that a SPARQL benchmark proves that one engine is faster than another? A passionate debate about one case is going on at www.linkedin.com/feed/update/...

04.11.2025 13:33 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The published lyrics of the 1967 Rolling Stones song β€œ2000 Man” (later covered by KISS) include the line β€œI am having an affair with a random computer”. Wouldn’t β€œRAND computer” have made more sense in 1967?

25.10.2025 18:04 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@theatlantic But yeah, isn't it terrible what these for-profit companies are doing to make money off of writers who have no control or even visibility over what's happening to their writing.

01.10.2025 17:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@theatlantic.com Is it possible for authors to look themselves up in the books3 database without giving a credit card number to The Atlantic first?

29.09.2025 11:59 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Let's stop saying 'semantic web' Like a startup pivot, the technology turned out to be great for things other than a new kind of 'web'.

New blog entry: Let's stop saying "semantic web" β€” like a startup pivot, the technology turned out to be great for things other than a new kind of "web". www.bobdc.com/blog/stopsem...

28.09.2025 14:34 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0

New blog entry tomorrow: Let's stop saying "semantic web" β€” like a startup pivot, the technology turned out to be great for things other than a new kind of "web".

27.09.2025 16:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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β€œAny sufficiently advanced technology is indistinguishable from magic.” - Arthur C. Clarke

21.09.2025 14:07 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Saturday Morning Breakfast Cereal - Chew Saturday Morning Breakfast Cereal - Chew

Gotta love a comic strip that uses XOR as part of the punch line. www.smbc-comics.com/comic/chew

06.09.2025 01:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"Top 10 Query Languages Every Developer Should Know in 2025" including, of course, SPARQL www.analyticsinsight.net/amp/story/pr...

31.08.2025 14:53 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

β€œJourney” is the new β€œexperience” to make the use of your simple product sound like a bigger deal than it actually is.

17.08.2025 15:14 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

What are some currently running SPARQL endpoints that people like besides Wikidata and DBpedia?

07.08.2025 21:39 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 3    πŸ“Œ 0
Correcting some outdated Revising some queries to accommodate revised data.

New blog entry: Correcting some outdated "Learning SPARQL" examples www.bobdc.com/blog/updatin...

27.07.2025 16:19 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

New blog entry tomorrow: Correcting some outdated "Learning SPARQL" examples

26.07.2025 15:10 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Speaking as a tech writer, I just love the Performing Directions of Terry Riley’s seminal 1964 music piece β€œIn C”: thirdcoastpercussion.com//downloads/2... (second and third page of the PDF)

22.06.2025 15:07 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Model Once, Represent Everywhere: UDA (Unified Data Architecture) at Netflix Introducing UDA, the knowledge-graph-based architecture that translates conceptual domain models into consistent schemas and data…

From "Model Once, Represent Everywhere: UDA (Unified Data Architecture) at Netflix" netflixtechblog.com/uda-unified-...: "UDA is a Knowledge Graph... We chose RDF and SHACL as the foundation for UDA’s knowledge graph."

15.06.2025 14:57 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
tf–idf - Wikipedia

With all the new information processing algorithms that are popping up and fading away these days, I love how one of the most popular ones continues to be an algorithm developed over 50 years ago by British computer scientist Karen SpΓ€rck Jones en.wikipedia.org/wiki/Tf%E2%8...

08.06.2025 15:51 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The reason that I switched from DOS to MS Windows 3.1 many years ago.

01.06.2025 17:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Bitbucket forcing us to upgrade from the free plan to a plan that they say costs $3.30 per month? Not so bad. Oh wait, they were dividing the actual price by 5 to make it look more appealing. They're really charging $16.50 per month.

31.05.2025 11:53 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
ChatGPT and Copilot as OWL processors Pretty impressive.

New blog entry: ChatGPT and Copilot as OWL processors β€” pretty impressive. www.bobdc.com/blog/chatgpt...

25.05.2025 16:05 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

New blog entry tomorrow: ChatGPT and Copilot as OWL processors β€” pretty impressive.

24.05.2025 17:19 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

You can also verb and noun adjectives if you really want to harsh someone's mellow.

12.05.2025 00:10 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Philosophy students and CS students typically need to learn some prepositional logic, so that's an even quicker way to go.

12.05.2025 00:07 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
RDF 1.2 Primer This primer is designed to provide the reader with the basic knowledge required to effectively use RDF. It introduces the basic concepts of RDF and shows concrete examples of the use of RDF. Sec...

First Draft Note of RDF 1.2 Primer is now available from the W3C at www.w3.org/TR/2025/DNOT...

18.04.2025 15:50 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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I had a great idea for a domain name, but I was 67 days too late.

12.04.2025 17:53 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"On two occasions I have been asked, 'Pray, Mr. [Charles] Babbage, if you put into the machine wrong figures, will the right answers come out?' ... I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question." (from en.wikipedia.org/wiki/Garbage...)

29.03.2025 14:49 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Converting RDFS schemas to SHACL constraints With SPARQL, of course.

New blog entry: Converting RDFS schemas to SHACL constraints β€” with SPARQL, of course. www.bobdc.com/blog/rdfs2sh...

09.03.2025 15:29 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

New blog entry tomorrow: Converting RDFS schemas to SHACL constraints β€” with SPARQL, of course.

08.03.2025 16:20 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Out of curiosity I let gmail's "AI" rewrite something I wrote and it replaced the word "features" with "functionality." I guess I'll wait a few years before I try that again. www.bobdc.com/blog/writing...

23.02.2025 15:10 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Using ChatGPT every few weeks has changed the way I do regular Google searches. Now I think of them as prompts where my incorporation of more context terms will get better answers, and that actually helps.

15.02.2025 17:02 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Now you're being irrational.

09.02.2025 17:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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