91吃瓜网官网

As government leaders increasingly recognize investments in artificial intelligence (AI) as a national imperative, the number of public-private partnerships focused on using machine intelligence to address some of the nation鈥檚 most pressing problems has steadily grown. 91吃瓜网官网 has been dedicated to leveraging our public-sector alliances to connect professional, academic, and citizen data scientists with public interest initiatives since we launched the first Data Science Bowl in 2015.听

This competition to harness data science for social good has become a tradition we鈥檝e repeated five times, with partners including Children鈥檚 National Hospital, the National Cancer Institute, and the Hatfield Marine Science Center. With this legacy in mind, 91吃瓜网官网 is proud to have been part of the winning team for the largest-ever healthcare-focused AI competition,

For the Challenge, 91吃瓜网官网 teamed up with Austin-based health data science startup . 鈥�91吃瓜网官网 and ClosedLoop were discussing collaboration opportunities long before the Health Outcomes Challenge,鈥� says 91吃瓜网官网 Senior Vice President John Larson. 鈥淲e were already aware of the power of their platform, and, when the opportunity arose to work together to further CMS innovation initiatives, we were excited to join forces.鈥�

In defining the Challenge, CMS asked competitors to investigate 鈥渉ow AI tools鈥攕uch as deep learning and neural networks鈥攃an be used to accelerate development of AI solutions for predicting patient health outcomes for Medicare beneficiaries for potential use in CMS Innovation Center innovative payment and service delivery models.鈥� The ClosedLoop-91吃瓜网官网 strategy to meet this goal merged three essential elements into a winning solution:

Data handling and preprocessing remain a key challenge in applying AI and deep learning to healthcare applications. Leveraging ClosedLoop鈥檚 platform, the team was able to quickly (1) identify high-value data features; (2) perform data cleaning, integration, and feature engineering; and (3) manage datasets used for different modeling experiments. ClosedLoop鈥檚 platform allowed our data scientists to hit the ground running and shortened the turnaround time for methods exploration and benchmarking.

In line with the Challenge objectives, the team employed advanced methods to achieve key goals:

• Maximize model accuracy: The research aimed at improving healthcare through predictive analysis is expanding rapidly, making it challenging for organizations to determine the optimal methodology for their use cases. Using the ClosedLoop platform, our team of data scientists quickly built and tested various models. The team鈥檚 goal was to test traditional machine learning libraries (e.g., XGBoost) while also experimenting with newer methods, such as . Our work demonstrated that the individual XGBoost and deep learning models both performed well independently, but, when assembled together, these models produced the team鈥檚 best result.
  
  
• Support model explainability: In many settings, and especially in healthcare, it is critical for decision makers to understand the variables driving model predictions. Beyond accuracy, the transparency of a model is critical to increasing the adoption of AI-enabled decision support capabilities. To provide explainable predictions, our team combined Shapley Additive Explanation (SHAP) values for XGBoost with an attention mechanism from the deep learning model to reveal the input variables most influential to the final model output (e.g., recent diagnoses, demographic data, environmental factors).
  
  
• Mitigate algorithmic bias:听To create the best model for predicting adverse events and mortality, we placed a strong emphasis on developing an ethical AI solution. Using several procedures鈥攊ncluding subpopulation model performance analysis, U.S.-population-to-CMS-dataset demographic comparisons, and model unfairness corrections 鈥攚e investigated how sensitive our model predictions were to patient demographics and other attributes. Through this analysis, we provided multiple recommendations for mitigating discrepancies, including attribute masking techniques and synthetic data mitigation.

Many organizations are struggling to realize the anticipated value from their AI investments. Part of our team鈥檚 strategy for pulling together a winning submission was to engage CMS data experts, clinicians, and health system administrators to review model outputs and user interfaces. This approach ensured that our solution presented precisely the information health professionals needed to optimize their decision making. The collaboration with domain experts resulted in the development and display of a host of relevant end-user data, including contextualized risk scores with associated confidence qualifications and patient-specific intervention recommendations.

The Challenge served as validation for an approach 91吃瓜网官网 has successfully used to improve the veteran experience; combat fraud, waste, and abuse; ; and provide numerous other AI-enabled solutions to our clients. As 91吃瓜网官网 and ClosedLoop continue to collaborate, we will use and evolve these practices to deliver impactful operational AI to federal health agencies.