graph TD A["Start"] --> B["Initialize Variables"] B --> C["Load Data"] C --> D["Preprocess Data"] D --> E["Feature Extraction"] E --> F["Model Training"] F --> G["Evaluate Model"] G --> H["If $$Accuracy > 90$$%"] H -- Yes --> I["Deploy Model"] H -- No --> J["Hyperparameter Tuning"] J --> F I --> K["Monitor Performance"] K --> L["If $$Performance < Threshold$$"] L -- Yes --> M["Retrain Model"] L -- No --> N["Continue Monitoring"] M --> F N --> O["End"] A --> P["Parallel Process"] P --> Q["Data Backup"] Q --> R["Validate Backup"] R --> S["If $$Backup Valid$$"] S -- Yes --> T["Notify Success"] S -- No --> U["Retry Backup"] U --> Q T --> O