title: Collective Knowledge (software)
text: # Collective Knowledge (software)
  
  The Collective Knowledge (CK) project is an open-source framework and repository to enable collaborative, reproducible and sustainable research and development of complex computational systems. CK is a small, portable, customizable and decentralized infrastructure helping researchers and practitioners:
  
  * share their code, data and models as reusable Python components and automation actions with unified JSON API, JSON meta information, and a UID based on FAIR principles
  * assemble portable workflows from shared components (such as multi-objective autotuning and Design space exploration)
  * automate, crowdsource and reproduce benchmarking of complex computational systems
  * unify predictive analytics (scikit-learn, R, DNN)
  * enable reproducible and interactive papers
  
  ## Notable usages
  
  * ARM uses CK to accelerate computer engineering
  * Association for Computing Machinery evaluates CK for possible integration with the ACM Digital Library sponsored by the Sloan Foundation and for reproducible research
  * Several ACM-sponsored conferences use CK for the Artifact Evaluation process
  * Imperial College (London) uses CK to automate and crowdsource compiler bug detection
  * Researchers from the University of Cambridge used CK to help the community reproduce results of their publication in the International Symposium on Code Generation and Optimization (CGO'17) during Artifact Evaluation
  * General Motors (USA) uses CK to crowd-benchmark convolutional neural network optimizations
  * The Raspberry Pi Foundation and the cTuning foundation released a CK workflow with a reproducible "live" paper to enable collaborative research into multi-objective autotuning and machine learning techniques
  * IBM uses CK to reproduce Quantum results from Nature
  * CK is used to automate MLPerf benchmark
  
  ## Portable package manager for portable workflows
  
  CK has an integrated cross-platform package manager with Python scripts, JSON API and JSON meta-description to automatically rebuild software environment on a user machine required to run a given research workflow.
  
  ## Reproducibility of experiments
  
  CK enables reproducibility of experimental results via community involvement similar to Wikipedia and physics. Whenever a new workflow with all components is shared via GitHub, anyone can try it on a different machine, with different environment and using slightly different choices (compilers, libraries, data sets). Whenever an unexpected or wrong behavior is encountered, the community explains it, fixes components and shares them back as described in.
  
  