Hiroki Sayama
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hirokisayama.bsky.social
Hiroki Sayama
@hirokisayama.bsky.social
What I do not understand, I can still create. -- unknown アメリカで大学教員やっています.いつもヘンなことばかり考えています.意識低い系.
Exactly 20 years ago today, we moved from Tokyo to Binghamton

It is hard to tell if it felt like a blink or an era, but it surely has been an amazing ride so far

Wishing you and your family Happy Holidays and a peaceful, productive Year of 2026 -- the Year of Fire Horse! 🔥🐎
December 23, 2025 at 12:37 PM
Here is the static version with stable network layout
December 23, 2025 at 12:11 AM
A long-overdue interactive version finally done
(Huge thanks to Google Gemini)
Complex Systems Topic Network: Interactive Visualization
bingdev.binghamton.edu/sayama/compl...
December 21, 2025 at 10:21 PM
Reposted by Hiroki Sayama
📣 𝗔𝗯𝘀𝘁𝗿𝗮𝗰𝘁 𝗗𝗲𝗮𝗱𝗹𝗶𝗻𝗲 𝗘𝘅𝘁𝗲𝗻𝗱𝗲𝗱 𝗳𝗼𝗿 𝗡𝗲𝘁𝗦𝗰𝗶 𝟮𝟬𝟮𝟲!

🗓️ New deadline: 𝗝𝗮𝗻𝘂𝗮𝗿𝘆 𝟵, 𝟮𝟬𝟮𝟲 (anywhere on Earth)
👉 Find abstract requirements, conference topics, and submission instructions here: www.netsci2026.com/call-for-abs...

We can’t wait to see your contributions! 🚀
December 19, 2025 at 8:51 PM
Reposted by Hiroki Sayama
Abstract submission deadline for NetSci 2026 has been extended! The new deadline to submit work to is January 9, 2026 (anywhere on earth)
⏰ 𝗗𝗲𝗮𝗱𝗹𝗶𝗻𝗲: 𝗗𝗲𝗰𝗲𝗺𝗯𝗲𝗿 𝟭𝟵!

NetSci 2026 abstract submissions close Dec 19 — just around the corner.
If you’re doing exciting work in network science (theory, computation, or applications), this is your chance to share it with a global community.

📅 Submit by Dec 19
🔗 www.netsci2026.com/call-for-abs...
December 19, 2025 at 7:36 PM
Reposted by Hiroki Sayama
Did you miss the deadline for #NetSci2026? Submit your work to #NERCCS2026!
Join us March 11–13 at the University of Rochester to celebrate the Ninth Northeast Regional Conference on Complex Systems.
Click on the link (or scan the QR) and submit now! ⬇️ shorturl.at/52o0q
December 19, 2025 at 1:10 PM
Asia-Pacific Summer School and Conference on Networks and Complex Systems
apcncs2026.github.io
APCNCS 2026 - Asia-Pacific Summer School and Conference on Networks and Complex Systems
Asia-Pacific Summer School and Conference on Networks and Complex Systems - June 9-12, 2026 at Nanyang Technological University, Singapore
apcncs2026.github.io
December 14, 2025 at 5:07 PM
Just found this, very very cool
Very interesting to see our Swarm Chemistry's "swinger" was evolved into a snake!
www.youtube.com/watch?v=KStC...
Siggraph Asia 2025: Participatory Evolution of Artificial Life Systems via Semantic Feedback
YouTube video by Shuowen Li
www.youtube.com
December 12, 2025 at 3:55 PM
Reposted by Hiroki Sayama
And this is how it ends! Thank you so much for attending #ComplexNetworks2025!

We hope you enjoy your stay in Binghamton and we look forward to seeing you next year in Portugal.

On behalf of the organizers and volunteers, we wish you a nice and safe journey back home.
December 11, 2025 at 10:28 PM
#ComplexNetworks2025 concluding session
Thank you very much organizers, student volunteers, sponsors and all participants!!
December 11, 2025 at 9:09 PM
Reposted by Hiroki Sayama
At Rooms C we are finishing #ComplexNetworks2025 by discussing network analysis!
December 11, 2025 at 7:51 PM
Great to attend a talk on the Friendship Paradox given by Scott Feld, the original proposer of the paradox!
#ComplexNetworks2025
December 11, 2025 at 8:32 PM
From the Network Analysis parallel session
Ivan Gallo-Mendez uses point processes to model the network of wild fires in Chile
#ComplexNetworks2025
December 11, 2025 at 7:56 PM
Reposted by Hiroki Sayama
Now @hirokisayama.bsky.social share with us the update on his famous #ComplexSystems keyword diagram using collective feedback and latest literature data. His approach can be systematically applied to other scientific fields, both transdisciplinary and specialized!

#ComplexNetworks2025
December 11, 2025 at 7:42 PM
From the Network Analysis parallel session
Ethan Dolin studies building network models
(Not building "network models", but "building network" models)
#ComplexNetworks2025
December 11, 2025 at 7:24 PM
Final parallel session on Network Analysis
Steven Skienka analyzes the nation-wide Dutch social network data
#ComplexNetworks2025
December 11, 2025 at 7:06 PM
Reposted by Hiroki Sayama
Early bird reg approaching, NetSciX in New Zealand, Feb 2026. And you can travel down the north island for the Capital City Complex Systems Symposium the week after. netscix2026.github.io www.tepunahamatatini.ac.nz/conferences/... @cna25.bsky.social @cssociety.bsky.social @netsciconf.bsky.social
December 11, 2025 at 5:40 PM
[Ad] Finally, in the last parallel session, I will be giving a talk about this complex systems diagram work (at 2:30pm in Room C):
github.com/hsayama/comp...

If you are still around please come and say hi
#ComplexNetworks2025
GitHub - hsayama/complex-systems-topic-network-2024
Contribute to hsayama/complex-systems-topic-network-2024 development by creating an account on GitHub.
github.com
December 11, 2025 at 6:28 PM
Reposted by Hiroki Sayama
Some pictures from our last lightning talk session at #ComplexNetworks2025
December 11, 2025 at 4:35 PM
Reposted by Hiroki Sayama
What structures make organizations ready for the unforeseeable? David Stark asks how organizations can prepare not just for crises but for surprise itself. Very nice way of closing #ComplexNetworks2025!
December 11, 2025 at 5:03 PM
Final #ComplexNetworks2025 keynote speaker David Stark discusses tests of systems and their resilience/transformation
December 11, 2025 at 5:21 PM
#ComplexNetworks2025 Day 3 lightning talks
December 11, 2025 at 4:36 PM
Reposted by Hiroki Sayama
December 11, 2025 at 3:36 PM
Reposted by Hiroki Sayama
Happening now at the Network Medicine Session (Room A).

#ComplexNetworks2025
December 11, 2025 at 2:54 PM
#ComplexNetworks2025 Day 3
From the Biological Networks session
December 11, 2025 at 3:37 PM