Dear NEST Users & Developers!
I would like to invite you to our next fortnightly Open NEST Developer
Video Conference today
Monday 17 August, 11.30-12.30 CEST (UTC+2).
In the Project team round, a contact person of each team will give a
short statement summarizing ongoing work in the team and cross-cutting
points that need discussion among the teams. The remainder of the
meeting we would go into a more in-depth discussion of topics that came
up on the mailing list or that are suggested by the teams.
Agenda
Welcome
Review of NEST User Mailing List
Project team round
In-depth discussion
The agenda for this meeting is also available online, see
https://github.com/nest/nest-simulator/wiki/2020-08-17-Open-NEST-Developer-…
Looking forward to seeing you soon!
best,
Dennis Terhorst
------------------
Log-in information
------------------
We use a virtual conference room provided by DFN (Deutsches Forschungsnetz).
You can use the web client to connect. We however encourage everyone to
use a headset for better audio quality or even a proper video
conferencing system (see below) or software when available.
Web client
* Visit https://conf.dfn.de/webapp/conference/97938800
* Enter your name and allow your browser to use camera and microphone
* The conference does not need a PIN to join, just click join and you're in.
In case you see a dfnconf logo and the phrase "Auf den
Meetingveranstalter warten", just be patient, the meeting host needs to
join first (a voice will tell you).
VC system/software
How to log in with a video conferencing system, depends on you VC system
or software.
- Using the H.323 protocol (eg Polycom): vc.dfn.net##97938800 or
194.95.240.2##97938800
- Using the SIP protocol:97938800@vc.dfn.de
- By telephone: +49-30-200-97938800
For those who do not have a video conference system or suitable
software, Polycom provides a pretty good free app for iOS and Android,
so you can join from your tablet (Polycom RealPresence Mobile, available
from AppStore/PlayStore). Note that firewalls may interfere with
videoconferencing in various and sometimes confusing ways.
For more technical information on logging in from various VC systems,
please see
http://vcc.zih.tu-dresden.de/index.php?linkid=1.1.3.4
Hi,
I am new to pynest and am using it to implement a liquid state machine. It
works marvelously for generating the network. My workflow is as follows:
- Initialise kernel
- Get stimulation episodes
- Create neurons (including spike generators)
- Connect neurons
- nest.Simulate()
- nest.GetStatus(recording_neurons) for readout at relevant timepoints
I would like to save the network so I can run nest.Simulate() on other
episodes in a real-time application, is there a straight-forward way to do
so?
I have tried pickling
conn = nest.GetConnections()
but to my knowledge that does not include a lot of details about the
connection, like the weight. It also does not return where there is
*no* connections,
which means simply using
nest.SetConnections(conn)
prior to nest.Simulate() will not work to reproduce the previously
generated network even if I initialise with all the same variables. I have
found the functions GetNetwork() and GetNodes() but I'm not sure how I can
use them, or if they are even useful for what I need.
Cheers,
Sock Ching
Dear NEST Users & Developers!
I would like to invite you to our next fortnightly Open NEST Developer
Video Conference today
Monday 3 August, 11.30-12.30 CEST (UTC+2).
In the Project team round, a contact person of each team will give a
short statement summarizing ongoing work in the team and cross-cutting
points that need discussion among the teams. The remainder of the
meeting we would go into a more in-depth discussion of topics that came
up on the mailing list or that are suggested by the teams.
Agenda
Welcome
Review of NEST User Mailing List
Project team round
In-depth discussion
The agenda for this meeting is also available online, see
https://github.com/nest/nest-simulator/wiki/2020-08-03-Open-NEST-Developer-…
Looking forward to seeing you soon!
best,
Dennis Terhorst
------------------
Log-in information
------------------
We use a virtual conference room provided by DFN (Deutsches Forschungsnetz).
You can use the web client to connect. We however encourage everyone to
use a headset for better audio quality or even a proper video
conferencing system (see below) or software when available.
Web client
* Visit https://conf.dfn.de/webapp/conference/97938800
* Enter your name and allow your browser to use camera and microphone
* The conference does not need a PIN to join, just click join and you're in.
In case you see a dfnconf logo and the phrase "Auf den
Meetingveranstalter warten", just be patient, the meeting host needs to
join first (a voice will tell you).
VC system/software
How to log in with a video conferencing system, depends on you VC system
or software.
- Using the H.323 protocol (eg Polycom): vc.dfn.net##97938800 or
194.95.240.2##97938800
- Using the SIP protocol:97938800@vc.dfn.de
- By telephone: +49-30-200-97938800
For those who do not have a video conference system or suitable
software, Polycom provides a pretty good free app for iOS and Android,
so you can join from your tablet (Polycom RealPresence Mobile, available
from AppStore/PlayStore). Note that firewalls may interfere with
videoconferencing in various and sometimes confusing ways.
For more technical information on logging in from various VC systems,
please see
http://vcc.zih.tu-dresden.de/index.php?linkid=1.1.3.4
Dear NEST Users & Developers!
I would like to invite you to our next fortnightly Open NEST Developer
Video Conference today
Monday 20 July, 11.30-12.30 CEST (UTC+2).
In the Project team round, a contact person of each team will give a
short statement summarizing ongoing work in the team and cross-cutting
points that need discussion among the teams. The remainder of the
meeting we would go into a more in-depth discussion of topics that came
up on the mailing list or that are suggested by the teams.
Agenda
Welcome
Review of NEST User Mailing List
Project team round
In-depth discussion
The agenda for this meeting is also available online, see
https://github.com/nest/nest-simulator/wiki/2020-07-20-Open-NEST-Developer-…
Looking forward to seeing you soon!
best,
Dennis Terhorst
------------------
Log-in information
------------------
We use a virtual conference room provided by DFN (Deutsches Forschungsnetz).
You can use the web client to connect. We however encourage everyone to
use a headset for better audio quality or even a proper video
conferencing system (see below) or software when available.
Web client
* Visit https://conf.dfn.de/webapp/conference/97938800
* Enter your name and allow your browser to use camera and microphone
* The conference does not need a PIN to join, just click join and you're in.
In case you see a dfnconf logo and the phrase "Auf den
Meetingveranstalter warten", just be patient, the meeting host needs to
join first (a voice will tell you).
VC system/software
How to log in with a video conferencing system, depends on you VC system
or software.
- Using the H.323 protocol (eg Polycom): vc.dfn.net##97938800 or
194.95.240.2##97938800
- Using the SIP protocol:97938800@vc.dfn.de
- By telephone: +49-30-200-97938800
For those who do not have a video conference system or suitable
software, Polycom provides a pretty good free app for iOS and Android,
so you can join from your tablet (Polycom RealPresence Mobile, available
from AppStore/PlayStore). Note that firewalls may interfere with
videoconferencing in various and sometimes confusing ways.
For more technical information on logging in from various VC systems,
please see
http://vcc.zih.tu-dresden.de/index.php?linkid=1.1.3.4
Dear NEST Users & Developers!
I would like to invite you to our next fortnightly Open NEST Developer
Video Conference today
Monday 6 July, 11.30-12.30 CEST (UTC+2).
In the Project team round, a contact person of each team will give a
short statement summarizing ongoing work in the team and cross-cutting
points that need discussion among the teams. The remainder of the
meeting we would go into a more in-depth discussion of topics that came
up on the mailing list or that are suggested by the teams.
Agenda
Welcome
Review of NEST User Mailing List
Project team round
In-depth discussion: Hackathon Wrap-up
The agenda for this meeting is also available online, see
https://github.com/nest/nest-simulator/wiki/2020-07-06-Open-NEST-Developer-…
Looking forward to seeing you soon!
best,
Dennis Terhorst
------------------
Log-in information
------------------
We use a virtual conference room provided by DFN (Deutsches Forschungsnetz).
You can use the web client to connect. We however encourage everyone to
use a headset for better audio quality or even a proper video
conferencing system (see below) or software when available.
Web client
* Visit https://conf.dfn.de/webapp/conference/97938800
* Enter your name and allow your browser to use camera and microphone
* The conference does not need a PIN to join, just click join and you're in.
In case you see a dfnconf logo and the phrase "Auf den
Meetingveranstalter warten", just be patient, the meeting host needs to
join first (a voice will tell you).
VC system/software
How to log in with a video conferencing system, depends on you VC system
or software.
- Using the H.323 protocol (eg Polycom): vc.dfn.net##97938800 or
194.95.240.2##97938800
- Using the SIP protocol:97938800@vc.dfn.de
- By telephone: +49-30-200-97938800
For those who do not have a video conference system or suitable
software, Polycom provides a pretty good free app for iOS and Android,
so you can join from your tablet (Polycom RealPresence Mobile, available
from AppStore/PlayStore). Note that firewalls may interfere with
videoconferencing in various and sometimes confusing ways.
For more technical information on logging in from various VC systems,
please see
http://vcc.zih.tu-dresden.de/index.php?linkid=1.1.3.4
Hello everyone,
I would like to ask how to normalize synaptic weights during STDP learning.
What I want to do is keeping the total amount of synaptic weights to/from
each neuron constant.
I try to describe my goal a bit more precisely:
i: The index of a pre-synaptic neuron.
j: The index of a post-synaptic neuron.
w_ij(t): The synaptic weight from i-th neuron to j-th neuron at time=t.
s_i(t): the sum of all incoming synaptic weights to i-th neuron at time=t.
i.e. the sum of w_ij(t) over j.
The goal is to set the sum of incoming weights (s_i(*)) to 1 by
normalization (1 is just for simplicity).
By STDP, we can get updated synaptic weight matrix w_ij(t+1), and the sum
s_i(t+1) is not necessarily 1. So, I want to set
w_ij(t+1) <- w_ij(t+1) / s_i(t+1)
I briefly read the documentation for synaptic models(
https://nest-simulator.readthedocs.io/en/stable/models/synapses.html).
I am not very confident if my understanding is correct, but it seems that
existing synaptic models handle only one synaptic weight.
How can I gather data of all incoming(or outgoing as well) weights to a
neuron and use the summation value inside of the STDP synapse model?
Best regards,
Keiko Fujii
Dear Nest Community,
Would anyone have insight into why I'm getting an UnknownModelName error?
I'm new to Nest and am using Nest 18.0 on Lubuntu Virtual Box (Windows 10
OS).
Thanks for any help.
Best Regards,
--Allen
**** Error Message--additional details attached ******
raise exceptionCls(commandname, message)
nest.ll_api.UnknownModelName: ('UnknownModelName in CopyModel_l_l_D:
/stdp_izh_bitwise_correct_connection is not a known model name. Please
check the modeldict for a list of available models.', 'UnknownModelName',
<SLILiteral: CopyModel_l_l_D>, ': /stdp_izh_bitwise_correct_connection is
not a known model name. Please check the modeldict for a list of available
models.')
********************************************************
Hello nest users with a mac,
From now on, it is possible to install nest via homebrew from the
default homebrew-core tap: https://formulae.brew.sh/formula/nest#default
[1]
You get nest 2.20.0 with OpenMP and PyNEST bindings with python 3.8
delivered as a 'bottle' (prebuild binary package) in a couple of seconds
- with all dependencies.
Go to https://brew.sh/ [2] and follow the installation of homebrew. When
brew is installed, just type:
brew install nest
And you should see something like:
$ brew install nest
==> Downloading
https://homebrew.bintray.com/bottles/nest-2.20.0_1.catalina.bottle.tar.gz
==> Downloading from
https://akamai.bintray.com/38/38bfd492f381cd059a495122d1c3342e8fb5095501c04…
########################################################################
100.0%
==> Pouring nest-2.20.0_1.catalina.bottle.tar.gz
Warning: nest dependency gcc was built with a different C++ standard
library (libstdc++ from clang). This may cause problems at runtime.
==> Caveats
The PyNEST bindings and its dependencies are installed with the
python(a)3.8 formula.
If you want to use PyNEST, use the Python interpreter from this path:
/usr/local/opt/python(a)3.8/bin
You may want to add this to your PATH.
==> Summary
🍺 /usr/local/Cellar/nest/2.20.0_1: 1,290 files, 21.2MB
Now you can run nest like:
$ nest
-- N E S T --
Copyright (C) 2004 The NEST Initiative
Version: nest-2.20.0
Built: Jun 22 2020 13:38:00
This program is provided AS IS and comes with
NO WARRANTY. See the file LICENSE for details.
Problems or suggestions?
Visit https://www.nest-simulator.org
Type 'help' to get more information.
Type 'quit' or press CTRL-D to quit.
SLI ]
If you want to use PyNEST, you have to use the python(a)3.8 formula python
- the dependencies numpy, scipy, etc. are also delivered via homebrew
and they are build with the python(a)3.8 formula, which is keg-only [3].
Add the opt-bin path to your PATH variable like:
export PATH=/usr/local/opt/python@3.8/bin:$PATH
and you can start with:
$ python3.8 -c 'import nest'
-- N E S T --
Copyright (C) 2004 The NEST Initiative
Version: nest-2.20.0
Built: Jun 22 2020 13:38:00
This program is provided AS IS and comes with
NO WARRANTY. See the file LICENSE for details.
Problems or suggestions?
Visit https://www.nest-simulator.org
Type 'nest.help()' to find out more about NEST.
Best, Tammo
Links:
------
[1] https://formulae.brew.sh/formula/nest#default
[2] https://brew.sh/
[3]
https://docs.brew.sh/How-to-Build-Software-Outside-Homebrew-with-Homebrew-k…
Dear NEST enthusiasts!
In the NEST Meeting on May 25th
<https://github.com/nest/nest-simulator/wiki/2020-05-25-Open-NEST-Developer-…>
[1] there was a very interesting discussion of handling of delays in
networks with STDP in NEST. It became obvious, that this topic requires
a more in-depth discussion and it was decided to do a separate VC for
this discussion, which will happen this week on
* Thursday, June 25, 2020 - 13:30 CEST
with the connection details
<https://github.com/nest/nest-simulator/wiki/Connection-Details> [2] as
usual.
Best,
Dennis
[1]:
https://github.com/nest/nest-simulator/wiki/2020-05-25-Open-NEST-Developer-…
[2]: https://github.com/nest/nest-simulator/wiki/Connection-Details
i.e. https://conf.dfn.de/webapp/conference/97938800
--
Dipl.-Phys. Dennis Terhorst
Coordinator Software Development
Institute of Neuroscience and Medicine (INM-6)
Computational and Systems Neuroscience &
Theoretical Neuroscience,
Institute for Advanced Simulation (IAS-6)
Jülich Research Centre, Member of the Helmholz Association and JARA
52425 Jülich, Germany
Building 15.22 Room 4004
Phone +49 2461 61-85062
Fax +49 2461 61- 9460
d.terhorst(a)fz-juelich.de
-------------------------------------------------------------------------------------
Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzender des Aufsichtsrats: MinDir Volker Rieke
Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender),
Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt
-------------------------------------------------------------------------------------
Dear NEST Users & Developers!
I would like to invite you to our next fortnightly Open NEST Developer
Video Conference on
Monday 22 June, 11.30-12.30 CEST (UTC+2).
In the Project team round, a contact person of each team will give a
short statement summarizing ongoing work in the team and cross-cutting
points that need discussion among the teams. The remainder of the
meeting we would go into a more in-depth discussion of topics that came
up on the mailing list or that are suggested by the teams.
Agenda
Welcome
Review of NEST User Mailing List
Project team round
In-depth discussion
The agenda for this meeting is also available online, see
https://github.com/nest/nest-simulator/wiki/2020-06-22-Open-NEST-Developer-…
Looking forward to seeing you soon!
best,
Dennis Terhorst
------------------
Log-in information
------------------
We use a virtual conference room provided by DFN (Deutsches Forschungsnetz).
You can use the web client to connect. We however encourage everyone to
use a headset for better audio quality or even a proper video
conferencing system (see below) or software when available.
Web client
* Visit https://conf.dfn.de/webapp/conference/97938800
* Enter your name and allow your browser to use camera and microphone
* The conference does not need a PIN to join, just click join and you're in.
In case you see a dfnconf logo and the phrase "Auf den
Meetingveranstalter warten", just be patient, the meeting host needs to
join first (a voice will tell you).
VC system/software
How to log in with a video conferencing system, depends on you VC system
or software.
- Using the H.323 protocol (eg Polycom): vc.dfn.net##97938800 or
194.95.240.2##97938800
- Using the SIP protocol:97938800@vc.dfn.de
- By telephone: +49-30-200-97938800
For those who do not have a video conference system or suitable
software, Polycom provides a pretty good free app for iOS and Android,
so you can join from your tablet (Polycom RealPresence Mobile, available
from AppStore/PlayStore). Note that firewalls may interfere with
videoconferencing in various and sometimes confusing ways.
For more technical information on logging in from various VC systems,
please see
http://vcc.zih.tu-dresden.de/index.php?linkid=1.1.3.4