HotArt版本HotArt3-SPO (ID: 629596)

The idea behind this model merge is to create a perfect mix capable of generating artistic photography: artful portraits and beautiful landscapes.

Both HotArt and HotArt2 as well as HotArt3 are great in their own way, try both with the same seed/sampler = then use the one according to your taste ;)

This rich Checkpoint/LORA mix series is an experiment that worked out very well ;)

For HotArt2 better hands - use both of the suggested resources (LORAs) at low ~0.333 level.

See below for more examples of generation capabilities ?

描述:

This version adds Step-aware Preference Optimization (SPO) LORA, [a novel post-training approach that independently evaluates and adjusts the denoising performance at each step, using a step-aware preference model and a step-wise resampler to ensure accurate step-aware supervision... blah, blah, blah = makes the output way artfully beautiful, a.k.a. - NICER !!!]

P.S.: The SPO approach is better than Direct Preference Optimization (DPO) that has extended its success from aligning large language models (LLMs) to aligning text-to-image diffusion models with human preferences. Unlike most existing DPO methods, which assume that all diffusion steps share a consistent preference order with the final generated images, this assumption neglects step-specific denoising performance and that preference labels should be tailored to each step's contribution.

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