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o_guest's profile
Olivia Guest | Ολίβια Γκεστ
Olivia Guest | Ολίβια Γκεστ
Olivia Guest | Ολίβια Γκεστ
@o_guest

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Olivia Guest | Ολίβια Γκεστ

@o_guest

• goth gremlin • computational cognitive/neuroscience modeling • geek & techish Cypriot • plant aficionada • came up with #bropenscience • http://neuroplausible.com  •

Τότεναμ, Λονδίνο & Cyprus
olivia.science
Joined October 2015

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    1. Iris van Rooij‏ @IrisVanRooij Apr 13
      • Report Tweet

      Without theory we would have never conceived of a black hole, let alone start looking for it.

      2 replies 14 retweets 88 likes
      Show this thread
    2. Vishnu Sreekumar‏ @vishnusreekr Apr 14
      • Report Tweet
      Replying to @IrisVanRooij

      What are some examples in psych where a theory made a prediction about something no one ever suspected and then they verified it experimentally? I suspect we aren’t there yet but was just wondering if you knew of any compelling examples.

      2 replies 0 retweets 1 like
    3. Esther Mondragón‏ @twitemp1 Apr 14
      • Report Tweet
      Replying to @vishnusreekr @IrisVanRooij

      The RW model (1972) was not only able to explain most of the conditioning effects known at the time, but it was able to predict critical and previously undiscovered phenomena such as superconditioning and overexpectation, later confirmed experimentally

      2 replies 2 retweets 9 likes
    4. Michael Anes‏ @manes Apr 14
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      Replying to @twitemp1 @vishnusreekr @IrisVanRooij

      Hebbian learning - back propogation; right?

      1 reply 0 retweets 1 like
    5. Esther Mondragón‏ @twitemp1 Apr 14
      • Report Tweet
      Replying to @manes @vishnusreekr @IrisVanRooij

      It could be considered Hebbian learning, but there is no backpropagation in RW

      1 reply 0 retweets 2 likes
    6. Michael Anes‏ @manes Apr 14
      • Report Tweet
      Replying to @twitemp1 @vishnusreekr @IrisVanRooij

      I just meant that Hebb's insights led to experimentally-verified phenomena such as LTP and error propagation schemes, not that Rescorla-Wagner contained those elements.

      1 reply 0 retweets 1 like
      Olivia Guest | Ολίβια Γκεστ‏ @o_guest Apr 15
      • Report Tweet
      Replying to @manes @twitemp1 and

      I'm confused by what you are saying @manes ... So RW does have the delta rule, in fact it's where the delta rules comes from, which is the learning rule used in back prop. Hebbian learning by definition does not use the delta rule. Do we agree on the definitions of these algos?

      2:42 AM - 15 Apr 2019
      • 2 Likes
      • Michael Anes Esther Mondragón
      1 reply 0 retweets 2 likes
        1. Esther Mondragón‏ @twitemp1 Apr 15
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          Replying to @o_guest @manes and

          Agreed, but rule =/= model, so as I see it 1) RW could be considered Hebbian because learning is a function of the activity of the nodes; 2) the delta rule in the RW model applies forwards only. Right?

          0 replies 0 retweets 3 likes
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