Comments (3)
Hi,
Thanks for the question. We are not mapping the word embeddings to be between [-1, 1], and this is different from image diffusions.
There are three terms in the objective: (1) Lsimple (mse), (2) the reconstruction (i.e. decoder_nll) (3) the prior (t_T_loss) as in
. Term (2) prevents norm from being too small, term (3) prevents the norm from being too large.Hope this helps!
from diffusion-lm.
Yes this explains it! Thank you very much for the quick response and the great explanation!
from diffusion-lm.
Hi @XiangLi1999, I am sorry for reopening the issue. I just have one more question about the loss function.
Can I ask why in decoder_nll
loss, we input x_start
instead of the predicted x_start?
You mentioned the decoder_nll
is to prevent word embeddings being too small. I assume it's because if the word embeddings are too small, the noise will take dominance, and it will be difficult for model to denoise, then the reconstruction loss will be high? Please correct me if I am wrong.
If that's the purpose of this reconstruction loss, then we need to use the predicted x_start (the denoised version) to calculate reconstruction loss, right?
Sorry if the answer seems obvious but I didn't get it. Thank you very much for your help!
from diffusion-lm.
Related Issues (20)
- some problems on reproducing the results
- I wander where to find the model in the predictability HOT 1
- Training on A100
- Separate weights for word embedding and lm-head?
- Questions about the result of success rate of PPLM? HOT 2
- Why not directly use Emb(W) as X_0? HOT 2
- Error when running training script on Google Colab HOT 2
- Fail to load GPT2 pretrained model for attribute controled generation
- Reproducing Table 5: Sentence Infilling - CIDEr / BLEU-4 metrics HOT 1
- Baseline reproduction
- error when runing:Exception in thread Thread-4:·······ValueError: signal number 32 out of range
- Which classifier to use in custom_trainer.py for controllable generation?
- About the tT_loss HOT 1
- The difference between this code and the paper "IDDPM" in the run_loop function in train_util.py.
- The relevant code that caused the error is in the Controllable Text Generation section, after the model trained for 6 epochs and started evaluating, it raised a KeyError: 'eval_loss' HOT 2
- Questions about the NLL loss
- E2E training procedure
- Issue while generating controllable text generation
- How to Execute the Semantic Content Subtask with infill.py
- Seq2Seq tasks with Diffusion LM
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from diffusion-lm.