On Wed, Jun 29, 2016 at 3:32 PM, 'Nil Geisweiller' via opencog
<[email protected] <mailto:[email protected]>> wrote:
Shujing,
I might start hacking the pattern miner on the master soon. Once I
do that there's is no coming back, I mean that merging the pattern
miner from the PatternMinerEmbodiment branch will be a huge pain, so
if that's the plan please let me know. I won't start touching it
till I get your feedback.
Thanks,
Nil
On 06/29/2016 01:20 PM, Shujing Ke wrote:
Hi,
The pure pattern miner test is a pure OpenCog thing, doesn't
require the
Unity3d game project. It has two modes, a single machine mode, and a
distributed mode, see
http://wiki.opencog.org/wikihome/index.php/Pattern_Miner They both
have been merged into the main Opencog branch before the end of last
year. If you follow this wiki page, please use the one in the main
branch. But because I haven't checked it again since this year,
so maybe
some parts in OpenCog it depends on have changed and the Pattern
Miner
is still last year's version. I will try to test it again later
when I
have time.
Yes, the current developing branch is integrating with the
Embodiment
client to recognize patterns by unsupervised learning from other
scripted NPCs' behaviour in the Unity3d game world for a demo in
my PhD
thesis. Because I got the impression that the new Embodiment
system is
in Ros now, and it is for connecting to the robots instead of
Unity3d
game world. There are 3 reasons I chose to use the old embodiment +
unity3d game world:
1. The demo I am making is to do unsupervised learning from a
noisy and
multi-contextual environment, needs to be easy to script the NPC
agents
to do a lot of random different high level actions, like walk to
something, pick up something, eat something, drop something,
even using
magic to heal someone, open chests with a key....It will be hard to
script a lot of NPC robots to do all of these.
2. If we want to connect the Pattern Miner to current robotic
project,
it will also require a computer vision processor to recognize
low-level
robotic actions first before all the perceived knowledge can all be
turned into Atoms in the AtomSpace, which I assume won't become
matured
and work perfectly with the whole OpenCog in near future.
3. For a more visible complete demo, after the Pattern Miner found a
pattern it need a planner to work together to use the new found
pattern
in planning, and then a new plan can be sent to the client for
execution. Since I am not there anymore, and to debugging the
planner
and the whole action execution pipeline from OpenCog embodiment to a
robot and feedback to OpenCog is very difficult for me. And is
probably
also require a lot of complex robotic mechanism implementation
which I
am not good at.
But once the perceiving modules and action execution modules are all
implemented and integrated well with the robots and OpenCog, it
should
not be hard to integrate my current developing stuff with the new
Embodiment system.
BTW, for anyone who is interested about what exactly my current
demo can do:
*The motivation:*
Any other kinds of learning in AI all require manually pick the
learning
materials, examples for a certain task for the agent to learn
from. But
real human level intelligence is able to just observe the whole
world,
without pre-assigned any tasks, just learning every useful
things from
the world. And once a new task is given, a human can search
their memory
and find out a solution to solve it. It's also different from
sequence
recognize, a sequence for a task is not always continuous, it can be
disturbed. So the Pattern Miner is aiming at figure out the
cause and
effect for every single action, and then using planning /
reasoning to
make them into a sequence when given a task.
*The demo content: *
There are two different tasks in the game world: open a chest,
heal an
animal.
There are a lot of NPCs doing random actions including the two
tasks
in the game world at the same time, for example: NPC A first
pick up an
apple; and then walk to a rabbit, apply healing magic to heal
it; walk
to a yellow key; walk around randomly; drop or eat the apple;
walk to a
yellow chest; open the yellow chest with the yellow key it is
holding.
At some point, give the AI agent a goal: open the black chest.
Then it
would be able to know from Pattern Miner that using the same
color of
key can open the same color of chest. If given a goal to heal
the cat
instead, the AI agent will also know from the Pattern Miner that
applying healing magic to an animal can heal it.
On Wed, Jun 29, 2016 at 9:56 AM, Ben Goertzel <[email protected]
<mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>> wrote:
Nil, among other factors, she is using a lot of the old
Embodiment
code that you deleted from the master branch...
However, the Pattern Matcher itself should not rely on any
of this old
Embodiment code, so I think she could likely merge her
improved PM
into master...
What she is doing (among other things) is using the PM to
recognize
patterns in the Atomspace resulting from a game character's
perceptions and actions, where the game character is
running around in
the old Unity3D game world, controlled by the old Embodiment
There is no conceptual reason not to just port all this to
Minecraft,
but Shujing hasn't had time to do that, as she's been doing
this work
in a hurry as it's part of what she needs to do to finish
her PhD
thesis...
At least the above is my understanding; Shujing can correct
me if
I'm wrong!
On Wed, Jun 29, 2016 at 3:52 PM, 'Nil Geisweiller' via opencog
<[email protected] <mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> wrote:
> Apparently this branch was started a year ago.
>
> Shujing, what prevents you from merging it into the master?
>
> Nil
>
>
> On 06/29/2016 10:45 AM, Ben Goertzel wrote:
>>
>> True... though I wonder what incompatibilities that
branch has, as
>> compared to master...
>>
>> On Wed, Jun 29, 2016 at 3:39 PM, AmeBel
<[email protected] <mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> wrote:
>>>
>>> Hi,
>>>
>>> FYI, the in-development patterminer can be found on the
>>> PatternMinerEmbodiment branch @ opencog/opencog/ repo.
>>>
>>> On Wednesday, June 29, 2016 at 3:16:13 PM UTC+8, Nil
wrote:
>>>>
>>>>
>>>> Well, I haven't moved past this issue, I think this other
error is just
>>>> a different manifestation of the same problem...
>>>>
>>>> Nil
>>>>
>>>> On 06/29/2016 10:00 AM, Nil Geisweiller wrote:
>>>>>
>>>>> Actually, I've moved past that issue (I didn't use
the right
conf), but
>>>>> I've got another, perhaps more worrisome
>>>>>
>>>>> [2016-06-29 06:58:08:109] [INFO] Loading module
>>>>>
>>>>>
>>>>>
"/home/nilg/OpenCog/opencog/build/opencog/learning/PatternMiner/libTestPatternMinerAgent.so"
>>>>>
>>>>> [2016-06-29 06:58:08:109] [ERROR] Caught signal 11
(Segmentation fault)
>>>>> on thread 140204635740224
>>>>> Stack Trace:
>>>>>
>>>>> I guess I'll have to fire up gdb. Meanwhile, any
feedback is
>>>>> appreciated.
>>>>>
>>>>> Nil
>>>>>
>>>>> On 06/29/2016 09:55 AM, Nil Geisweiller wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I'm trying to use the pattern miner. I'm posting
here first
before
>>>>>> creating a github issue in case it is a silly problem.
>>>>>>
>>>>>> I'm loading the test in the cogserver
>>>>>>
>>>>>> opencog> loadmodule
>>>>>>
>>>>>>
>>>>>>
/home/nilg/OpenCog/opencog/build/opencog/learning/PatternMiner/libTestPatternMinerAgent.so
>>>>>>
>>>>>>
>>>>>>
>>>>>> and getting
>>>>>>
>>>>>> [2016-06-29 05:43:14:123] [WARN] Unable to load module
>>>>>>
>>>>>>
>>>>>>
"/home/nilg/OpenCog/opencog/build/opencog/learning/PatternMiner/libTestPatternMinerAgent.so":
>>>>>>
>>>>>>
>>>>>>
>>>>>>
/home/nilg/OpenCog/opencog/build/opencog/learning/PatternMiner/libPatternMiner.so:
>>>>>>
>>>>>> undefined symbol: _ZN7opencog11OBJECT_NODEE
>>>>>>
>>>>>> Any idea?
>>>>>>
>>>>>> Nil
>>>
>>>
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>>
>>
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