SRS

BellySafe

Matrix Factorization Based

Funk Matrix Factorization

SVD/SVD++

PMF/Bayesian PMF/ Non Linear PMF

None Negative MF

ALS

FM

FFM

RankFM

LTFM

BMF

Slope One

RMF

NPCA

IMF/BPR

Product

Item-Centric

User-Centric

Expert

Hybrid Methods

Meta-level

Feature combination

Feature augmentation

Mixed hybridization

Cascade hybridization

Switching hybridization

Weighted hybridization

Deep Learning Based

LLM Empowerd

PEFT Methods

Additive
Fine-Tunning

Adapter-based

Adapter Design

Serial Adapter, Parallel Adapter, CoDA

Multi-task Adaptation

AdapterFusion , AdaMix , AdapterSoup , MerA , Hyperformer

Soft Prompt-based

Soft Prompt Design

Prefix-tuning , p-tuning , Prompt-tuning , Xprompt, APrompt

Training Speedup

Reparameterized
Fine-Tuning

Low-rank
Decomposition

LoRA , Compacter KronA , VeRA , DoRA

LoRA Derivatives

Dynamic Rank

DyLoRA , AdaLoRA , SoRA , CapaBoost , AutoLoRA

LoRA Improvement

Laplace-LoRA , LoRA Dropout , LoRA+

Multiple LoRA

LoRAHub, MoLORA , MoA, MoLE, MixLoRA

Selective
Fine-Tunning

Unstructural Masking

U-Diff pruning , FishMask , Fish-Dip , AM

Structural Masking

S-Diff pruning ,S-BitFit , FAR, Bitfit, SPT