Researchers say AI prescribes better treatment than doctors
The idea behind the research, carried out by Casey Bennett and Kris Hauser, is simple and gets to the core of why so many people care so much about data in the first place: If doctors can consider whatâ€™s actually happening and likely to happen instead of relying on intuition, they should be able to make better decisions.
In order to prove out their hypothesis, the researchers worked with â€śclinical data, demographics and other information on over 6,700 patients who had major clinical depression diagnoses, of which about 65 to 70 percent had co-occurring chronic physical disorders like diabetes, hypertension and cardiovascular disease.â€ť They built a model using Markov decision processes â€” which predict the probabilities of future events based on those immediately preceding them â€” and dynamic decision networks â€” which extend the Markov processes by considering the specific features of those events in order to determine the probabilities. Essentially, their model considers the specifics of a patientâ€™s current state and then determines the best action to effect the best possible outcome.
Credit: Indiana University
Specifically, Bennett and Hauser found via a simulation of 500 random cases that their model decreased the cost per unit of outcome change to $189 from the $497 without it, an improvement of 58.5 percent. They found their original model improved patient outcomes by nearly 35 percent, but that tweaking a few parameters could bring that number to 41.9 percent.
Sources and more information:
An artificial intelligence system developed by researchers at the University of Indiana can diagnose illnesses and prescribe courses of treatment significantly better than a human doctor, the university said Monday. Using a computerized decision making processes similar to IBM's wiz computer "Watson" that won the game show "Jeopardy," researchers...
( via gigaom.com )
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