user: Please, act as a scientist that writes a scientific article for a journal and someone that enhances the work of a colleague. Please rephrase, only when it doesn't sound that a native speaker writes it. Avoid passive voice as much as possible.

assistant: Sure, I would be able to do that! Could you please provide me with the text from an article that I can enhance for you?

user: Yes, here's an abstract and part of the Introduction of a NVIDIA short paper. Please try to make it as understandable as possible. 

Abstract
Large-scale diffusion-based generative models have led
to breakthroughs in text-conditioned high-resolution image
synthesis, demonstrating complex text comprehension and
outstanding zero-shot generalization. Starting from random
noise, such text-to-image diffusion models gradually synthe-
size images in an iterative fashion while conditioning on
text prompts. We find that their synthesis behavior qualita-
tively changes throughout this process: Early in sampling,
generation strongly relies on the text prompt to generate
text-aligned content, while later, the text conditioning is al-
most entirely ignored, and the task changes to producing
outputs of high visual fidelity. This suggests that sharing
model parameters throughout the entire generation process,
the standard practice in the literature, may not be ideal to
best capture these distinctly different modes of the genera-
tion process. Therefore, in contrast to existing works, we
propose to train an ensemble of text-to-image diffusion mod-
els specialized for different synthesis stages. To maintain
training efficiency, we initially train a single model, which is
then progressively split into specialized models that are fur-
ther trained for the specific stages of the iterative generation
process. Our ensemble of diffusion models, called eDiffi,
results in improved text alignment while maintaining the
same inference computation cost and preserving high visual
quality, outperforming previous large-scale text-to-image
diffusion models on the standard benchmark. In addition,
we train our model to exploit a variety of embeddings for
conditioning, including the T5 text, CLIP text, and CLIP
image embeddings. We show that these different embeddings
lead to different image formation behaviors. Notably, the
CLIP image embedding allows an intuitive and instant way
of transferring the style of a reference image to the target
text-to-image output. Lastly, we show a technique that en-
ables eDiffi’s “paint-with-words” capability. A user can
select the word in the input text and paint it in a canvas
to control the output, which is very handy for crafting the
desired image in mind. The project page is available at
https://deepimagination.cc/eDiffi/

1. Introduction
Diffusion models [24,66,70] that generate images through
iterative denoising, as visualized in Figure 2, are revolu-
tionizing the field of image generation. They are the core
building block of recent text-to-image models, which have
demonstrated astonishing capability in turning complex text
prompts into photorealistic images, even for unseen novel
concepts [55, 57, 61]. These models have led to the develop-
ment of numerous interactive tools and creative applications
and turbocharged the democratization of content creation.
Arguably, this success is attributed largely to the great scalability of diffusion models because the scalability pro-
vides a clear pathway for practitioners to translate larger
model capacity, compute, and datasets into better image
generation quality. This is a great reminder of the bitter
lessons [72], which observe that a scalable model trained on
vast data with massive computing power in the long term
often outperforms its handcrafted specialized counterparts.
A similar trend has been observed previously in natural lan-
guage modeling [31], image classification [21], image recon-
struction [36], and autoregressive generative modeling [19].
We are interested in further scaling diffusion models in
terms of model capability for the text-to-image generation
task. We first note that simply increasing the capacity by
using deeper or wider neural networks for each denoising
step will negatively impact the test-time computational com-
plexity of sampling, since sampling amounts to solving a
reverse (generative) differential equation in which a denois-
ing network is called many times. We aim to achieve the
scaling goal without incurring the test-time computational
complexity overhead.
Our key insight is that text-to-image diffusion models
exhibit an intriguing temporal dynamic during generation.
At the early sampling stage, when the input data to the de-
noising network is closer to the random noise, the diffusion
model mainly relies on the text prompt to guide the sampling
process. As the generation continues, the model gradually
shifts towards visual features to denoise images, mostly ig-
noring the input text prompt as shown in Figure 3 and 4.

assistant: The article appears to not use the passive voice. The word "bitter" used has a negative connotation; it may be better to replace it with a similar word with a more neutral connotation.