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Seems like a good answer. If you want a deeper answer, you should ask a follow up question. Here is my follow up answer to “can you explain it at a deeper level
by fauxpause_ 3y ago
Seems like a good answer. If you want a deeper answer, you should ask a follow up question. Here is my follow up answer to “can you explain it at a deeper level”
> At a deeper level, the temperature parameter in generative AI models like GPT-3 affects the softmax function, which is used to convert the model's output into a probability distribution over the possible words or tokens.
> The softmax function takes the logits, which are the unnormalized output values of the model, and applies the exponential function to each value, normalizing them to produce probabilities. The formula for the softmax function is as follows:
> P(y_i) = exp(logit(y_i)) / sum(exp(logit(y_j)))
> Where:
> P(y_i) is the probability of the i-th token in the output sequence.
logit(y_i) is the logit value (unnormalized score) of the i-th token.
> The sum is taken over all possible tokens.
> The temperature parameter comes into play when computing the exponential function. The temperature value, denoted as T, is applied as an exponent to the logits before performing the softmax. Mathematically, the modified softmax function with temperature is:
> P(y_i) = exp(logit(y_i) / T) / sum(exp(logit(y_j) / T))
> The temperature parameter T controls the steepness of the softmax function. A higher temperature value (e.g., 1.0) increases the exponentiation effect, making the probabilities more spread out and the distribution more uniform. This leads to a higher likelihood of selecting less probable tokens, resulting in more diverse and random output.
> Conversely, a lower temperature value (e.g., 0.5) reduces the exponentiation effect, making the probabilities sharper and more focused. The most probable tokens are emphasized, leading to more deterministic and conservative output.
> By adjusting the temperature, you can manipulate the balance between exploration and exploitation during text generation. Higher temperatures encourage the model to explore more possibilities, while lower temperatures bias it towards exploiting the most likely choices based on the training data.
> It's important to note that the choice of temperature is a design decision, and there is no fixed rule for determining the optimal value. It often requires experimentation and understanding the specific behavior of the model to achieve the desired output characteristics
- doetoe 3y agoNot saying it's bad as a qualitative answer, but it doesn't say anything quantitative about the effect of the temperature in the ChatGPT API. Temperature is a well known and wel documented concept, but if you don't know what y_i is, and for all I know that's just a number coming out of a black box with billions of parameters, you don't know what temperature 0.7 is, beyond the fact that a token i whose logit(y_i) is 0.7 higher that that of another token, is e times as likely to be produced. What does that tell me? Nothing.
- fauxpause_ 3y agoMy dude it’s not my fault if you don’t understand the concept of asking follow up questions for clarification. This isn’t like a Google search. The way you retrieve knowledge is different