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Welcome to LAMDA-BBO Group 👋

We are the LAMDA-BBO (Black-Box Optimization) group, led by Professor Chao Qian. Our group is a part of LAMDA Group @ Nanjing University, which is led by Professor Zhi-Hua Zhou.

Our research focuses on advancing the theories, algorithms, and applications of black-box optimization. Our key areas of interest include, but are not limited to:

  • Theoretical analysis of evolutionary algorithms
  • Designing safe evolutionary algorithms, i.e., evolutionary algorithms with provable approximation guarantee
  • Designing efficient black-box optimization algorithms, e.g., Bayesian optimization, evolutionary strategies, evolutionary gradient optimization, and cooperative coevolution
  • Learning to optimize, e.g., learning to configure, generate and select black-box optimzition algorithms, offline optimization, and neural combinatorial optimization
  • Evolutionary learning, particularly evolutionary reinforcement learning, deep learning, and ensemble learning
  • Applications to solve complex real-world optimziation problems in industry (e.g., electronic design automation) and science (e.g., geoscience)

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  1. Open3DBench Open3DBench Public

    Official implementation of paper "Open3DBench: Open-Source Benchmark for 3D-IC Backend Implementation and PPA Evaluation".

    Verilog 148 21

  2. BBOPlace-Bench BBOPlace-Bench Public

    Official implementation of paper "BBOPlace-Bench: Benchmarking Black-Box Optimization for Chip Placement".

    Python 33 8

  3. offline-moo offline-moo Public

    Official implementation of ICML'24 paper "Offline Multi-Objective Optimization".

    Python 26 6

  4. universal-offline-bbo universal-offline-bbo Public

    Forked from trxcc/universal-offline-bbo

    Official implementation of ICML'25 paper "Towards Universal Offline Black-Box Optimization via Learning Language Model Embeddings"

    Python 12 1

  5. Efficient-TDP Efficient-TDP Public

    Official implementation of DATE'25 paper "Timing-Driven Global Placement by Efficient Critical Path Extraction".

    C++ 71 8

  6. MCTS-VS MCTS-VS Public

    Official implementation of NeurIPS'22 paper "Monte Carlo Tree Search based Variable Selection for High-Dimensional Bayesian Optimization"

    Python 45 7

Repositories

Showing 10 of 39 repositories
  • BBOPlace-Bench Public

    Official implementation of paper "BBOPlace-Bench: Benchmarking Black-Box Optimization for Chip Placement".

    lamda-bbo/BBOPlace-Bench's past year of commit activity
    Python 33 8 0 0 Updated Sep 7, 2026
  • Open3DBench Public

    Official implementation of paper "Open3DBench: Open-Source Benchmark for 3D-IC Backend Implementation and PPA Evaluation".

    lamda-bbo/Open3DBench's past year of commit activity
    Verilog 148 21 1 0 Updated Aug 31, 2026
  • PRBD Public

    Codes of the paper "(PPSN'26) Scaling Bayesian Optimization to High-Dimension via Pairwise-Relation-Based Decomposition"

    lamda-bbo/PRBD's past year of commit activity
    Python 1 0 0 0 Updated Aug 31, 2026
  • SHSP Public

    SHSP: Structure-Aware Hierarchical Solution Prediction for Mixed-Integer Linear Programming

    lamda-bbo/SHSP's past year of commit activity
    Python 1 0 0 0 Updated Aug 25, 2026
  • EnCore Public

    EnCore: Learning to Refine Early-Stage Solutions for MILP Acceleration

    lamda-bbo/EnCore's past year of commit activity
    Python 1 0 0 0 Updated Aug 21, 2026
  • Soil-PUE Public

    Official implementation of Global patterns and feasible improvement potential of phosphorus use efficiency in cereal croplands

    lamda-bbo/Soil-PUE's past year of commit activity
    Python 1 2 0 0 Updated Aug 15, 2026
  • macro-regulator Public

    Official implementation of NeurIPS'24 paper "Reinforcement Learning Policy as Macro Regulator Rather than Macro Placer".

    lamda-bbo/macro-regulator's past year of commit activity
    C++ 21 BSD-3-Clause 5 3 0 Updated Aug 1, 2026
  • GenRe2 Public Forked from Johnny1145/GenRe2

    Code for ICML'26 paper: Beyond Token-level Supervision: Unlocking the Potential of Decoding-based Regression via Reinforcement Learning

    lamda-bbo/GenRe2's past year of commit activity
    Python 3 Apache-2.0 1 0 0 Updated Jul 1, 2026
  • EXPlace Public

    Official implementation of ICLR'2026 paper titled "Expertise Can Be Helpful for Reinforcement Learning-based Macro Placement"

    lamda-bbo/EXPlace's past year of commit activity
    Verilog 11 1 0 0 Updated Jun 24, 2026
  • offline-moo Public

    Official implementation of ICML'24 paper "Offline Multi-Objective Optimization".

    lamda-bbo/offline-moo's past year of commit activity
    Python 26 6 0 0 Updated May 24, 2026

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