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# System prepended metadata

title: 2020/10/27 meeting

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# 2020/10/27 meeting

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1. Past work
2. probability of decision exchange 
3. Inverse spikes intervel

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## past work

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1. Decision make;corr of recurrent & noise

要在關閉input後保留current like this
![](https://i.imgur.com/irIgvxK.png)
放大decision部份後長這樣，約300units -> 1/5sec
![](https://i.imgur.com/WMDBMgq.png)

if noise upup -> recurrent have to upup too
如此才能維持那一小段decision time

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2. probability of Decision exchange

### process
| time | neuron | inputstr |
| ---- | ------ | -------- |
| 3000 | 0      | 6        |
| 3000 | 1      | 5        |
| next | next   | next     |
| var  | 0      | 0        |
| var  | 1      | 5        |
| next | next   | next     |
| 3000 | 0      | 6        |
| 3000 | 1      | 5        |

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3. inverse spikes interval

![](https://i.imgur.com/CSgO78s.png)

```
    Epu = (external_current / -_g) + _rest;
    Z = (_threshold - _reset) / (Epu - _threshold);
    ISI = (1 / ((1 / -_g) * log(1 + Z)));
```    
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## probability of Decision exchange 

### process
![](https://i.imgur.com/Cu8Q93g.png)


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### 示意圖
XXXXlast week testXXXX
![](https://i.imgur.com/D4kCzYI.png)
VVVVthis weekVVVV
![](https://i.imgur.com/sxFMzTp.png)

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|    time    | neuron | input_str  |
|:----------:| ------ | ---------- |
|    3000    | 0      | 8          |
|    3000    | 1      | 0          |
|    next    |        |            |
| ***var1*** | 0      | 0          |
| ***var1*** | 1      | ***var2*** |
|    next    |        |            |
|    3000    | 0      | 8          |
|    3000    | 1      | 0          |

## every var1 and var2 run 1000 times to cal those probability.

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### time_400,700,1000
![](https://i.imgur.com/4ZeF85I.png)

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### detailtime400
![](https://i.imgur.com/5oHqnfC.png)

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## inverse spikes interval
![](https://i.imgur.com/h8lWqSq.png)![](https://i.imgur.com/6CNl9xE.png)
![](https://i.imgur.com/s4yFEQm.png)![](https://i.imgur.com/yXW8EmB.png)

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