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9.5 ADVANTAGES AND DISADVANTAGES            243





                                              Health record providers

                        Hospitals
                                                                              Medical researchers



                                                                               Community health staff
                    Medical clinics               Centralized
                                                    server

                                                                                  Doctors



                                                                                Patients
                     Patients’ records
                                                    HRS
                                          (Health recommendation system)

               FIG. 9.6
               Health recommendation system (HRS) architecture.




                Table 9.3 Comparison Among Existing Approaches and Proposed HRS
                Contribution          Average MAE Values (Patients)      Average MAE Values (Doctors)
                Yakut and Polat       0.724                              0.795
                Kaur et al.           0.739                              0.807
                Proposed HRS          0.649                              0.717


                  In Table 9.3, MAE values are shown for the healthcare dataset where 10,000 patient ratings for 500
               doctors are divided among 5 parties. Here p represents a number of parties collaborating, which varies
               from 1 to 5 where p¼1 meaning that there is no collaboration and all parties are generating predictions
               individually. The p¼2 signifies that two parties are collaborating and likewise for p¼3, 4, or 5.
               Fig. 9.7 depicts that MAE value is lower when all parties are collaborating, that is, p¼5. The lower
               the MAE value, the higher the accuracy. By using a collaborative-based filtering technique on the pro-
               posed HRS, we achieve lower MAE values and high accuracy when compared to existing approaches.





               9.5 ADVANTAGES AND DISADVANTAGES OF THE PROPOSED HEALTH
               RECOMMENDATION SYSTEM USING BIG DATA ANALYTICS
               The proposed HRS has some advantages. Real-time remote tracking of vital signs through embedded
               sensors (attached to patients) allows healthcare providers to be alerted in case of anomalies in pulse
               rate, heartbeat, disorientation, etc. Big data analytics help doctors to get quick access to health
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