Iteration 2 - OR_EXPERT_REFINEMENT
Sequence: 5
Timestamp: 2025-07-25 22:35:27

Prompt:
You are an Operations Research (OR) expert in iteration 2 of an alternating optimization process. The algorithm alternates between OR expert analysis and data engineering implementation until convergence.

CRITICAL MATHEMATICAL CONSTRAINTS FOR LINEAR/MIXED-INTEGER PROGRAMMING:
- The optimization problem MUST remain Linear Programming (LP) or Mixed-Integer Programming (MIP)
- Objective function MUST be linear: minimize/maximize ∑(coefficient × variable)
- All constraints MUST be linear: ∑(coefficient × variable) ≤/≥/= constant
- Decision variables can be continuous (LP) or mixed continuous/integer (MIP)
- NO variable products, divisions, or other nonlinear relationships
- If previous iteration introduced nonlinear elements, redesign as linear formulation
- Maintain between 2 and 20 constraints for optimization feasibility

YOUR SCOPE: Focus exclusively on optimization modeling and mapping analysis. Do NOT propose database changes.
ROW COUNT AWARENESS: Understand that data engineer applies 3-row minimum rule - insufficient table data gets moved to business_configuration_logic.json.


DATA AVAILABILITY CHECK: 
Before listing missing requirements, verify:
- Check current schema for required data columns
- Check business configuration logic for required parameters  
- Only list as "missing" if data is truly unavailable
- If all mappings are "good", missing_requirements should be []

CONSISTENCY RULES:
- IF all mapping_adequacy == "good" THEN missing_optimization_requirements = []
- IF missing_optimization_requirements = [] THEN complete CAN be true
- IF complete == true THEN confidence should be "high"

SELF-CHECK: Before responding, verify:
1. Does current schema contain the data I claim is missing?
2. Are my mapping assessments consistent with missing requirements?
3. Is my complete status consistent with missing requirements?

MAPPING COMPLETENESS CHECK: Ensure logical consistency between:
- All objective coefficients mapped with adequacy evaluation
- All constraint bounds mapped with adequacy evaluation  
- All decision variables mapped with adequacy evaluation
- Missing requirements list matches inadequate mappings only


CRITICAL: Respond with ONLY a valid JSON object. No explanations, no markdown, no extra text.



CURRENT STATE (iteration 1):
{
  "iteration": 2,
  "converged": false,
  "business_context": "Optimize flight scheduling to minimize fuel consumption while ensuring all flights are assigned to an airport and operated by a company, respecting operational constraints such as velocity, altitude, and capacity limits.",
  "optimization_problem": "Minimize total fuel consumption across all flights by optimizing the assignment of flights to airports and companies, subject to velocity, altitude, and capacity constraints.",
  "objective": "minimize \u2211(fuel_consumption_coefficient[flight_id] \u00d7 flight_assignment_variable[flight_id, airport_id, company_id])",
  "table_count": 1,
  "key_changes": [
    "Schema changes include creating a table for flight assignments to address the missing decision variable. Configuration logic updates include scalar parameters for velocity and altitude constraints and formulas for fuel consumption calculations."
  ],
  "math_consistency": "high",
  "next_iteration_focus": "Define and map the flight assignment decision variable to ensure a complete linear formulation.",
  "mapping_adequacy_summary": "mostly_good"
}

CURRENT SCHEMA:
```sql
-- Iteration 2 Database Schema
-- Objective: Schema changes include creating a table for flight assignments to address the missing decision variable. Configuration logic updates include scalar parameters for velocity and altitude constraints and formulas for fuel consumption calculations.

CREATE TABLE fuel_consumption_coefficients (
  flight_id INTEGER,
  coefficient FLOAT
);

CREATE TABLE velocity_constraints (
  flight_id INTEGER,
  velocity_min INTEGER,
  velocity_max INTEGER
);

CREATE TABLE altitude_constraints (
  flight_id INTEGER,
  altitude_min INTEGER,
  altitude_max INTEGER
);

CREATE TABLE airport_capacities (
  airport_id INTEGER,
  capacity INTEGER
);

CREATE TABLE company_capacities (
  company_id INTEGER,
  capacity INTEGER
);

CREATE TABLE flight_assignments (
  flight_id INTEGER,
  airport_id INTEGER,
  company_id INTEGER,
  assignment BOOLEAN
);


```

CURRENT DATA DICTIONARY:
{
  "tables": {
    "fuel_consumption_coefficients": {
      "business_purpose": "Fuel consumption coefficients for each flight",
      "optimization_role": "objective_coefficients",
      "columns": {
        "flight_id": {
          "data_type": "INTEGER",
          "business_meaning": "Unique identifier for each flight",
          "optimization_purpose": "Index for fuel consumption coefficient",
          "sample_values": "1, 2, 3"
        },
        "coefficient": {
          "data_type": "FLOAT",
          "business_meaning": "Fuel consumption coefficient for the flight",
          "optimization_purpose": "Used in objective function",
          "sample_values": "0.5, 0.6, 0.7"
        }
      }
    },
    "velocity_constraints": {
      "business_purpose": "Minimum and maximum velocity constraints for each flight",
      "optimization_role": "constraint_bounds",
      "columns": {
        "flight_id": {
          "data_type": "INTEGER",
          "business_meaning": "Unique identifier for each flight",
          "optimization_purpose": "Index for velocity constraints",
          "sample_values": "1, 2, 3"
        },
        "velocity_min": {
          "data_type": "INTEGER",
          "business_meaning": "Minimum velocity constraint for the flight",
          "optimization_purpose": "Used in velocity constraint",
          "sample_values": "500, 550, 600"
        },
        "velocity_max": {
          "data_type": "INTEGER",
          "business_meaning": "Maximum velocity constraint for the flight",
          "optimization_purpose": "Used in velocity constraint",
          "sample_values": "900, 950, 1000"
        }
      }
    },
    "altitude_constraints": {
      "business_purpose": "Minimum and maximum altitude constraints for each flight",
      "optimization_role": "constraint_bounds",
      "columns": {
        "flight_id": {
          "data_type": "INTEGER",
          "business_meaning": "Unique identifier for each flight",
          "optimization_purpose": "Index for altitude constraints",
          "sample_values": "1, 2, 3"
        },
        "altitude_min": {
          "data_type": "INTEGER",
          "business_meaning": "Minimum altitude constraint for the flight",
          "optimization_purpose": "Used in altitude constraint",
          "sample_values": "30000, 31000, 32000"
        },
        "altitude_max": {
          "data_type": "INTEGER",
          "business_meaning": "Maximum altitude constraint for the flight",
          "optimization_purpose": "Used in altitude constraint",
          "sample_values": "40000, 41000, 42000"
        }
      }
    },
    "airport_capacities": {
      "business_purpose": "Capacity constraints for each airport",
      "optimization_role": "constraint_bounds",
      "columns": {
        "airport_id": {
          "data_type": "INTEGER",
          "business_meaning": "Unique identifier for each airport",
          "optimization_purpose": "Index for airport capacity",
          "sample_values": "1, 2, 3"
        },
        "capacity": {
          "data_type": "INTEGER",
          "business_meaning": "Maximum number of flights the airport can handle",
          "optimization_purpose": "Used in airport capacity constraint",
          "sample_values": "10, 15, 20"
        }
      }
    },
    "company_capacities": {
      "business_purpose": "Capacity constraints for each company",
      "optimization_role": "constraint_bounds",
      "columns": {
        "company_id": {
          "data_type": "INTEGER",
          "business_meaning": "Unique identifier for each company",
          "optimization_purpose": "Index for company capacity",
          "sample_values": "1, 2, 3"
        },
        "capacity": {
          "data_type": "INTEGER",
          "business_meaning": "Maximum number of flights the company can handle",
          "optimization_purpose": "Used in company capacity constraint",
          "sample_values": "5, 10, 15"
        }
      }
    },
    "flight_assignments": {
      "business_purpose": "Binary decision variable indicating if a flight is assigned to an airport and company",
      "optimization_role": "decision_variables",
      "columns": {
        "flight_id": {
          "data_type": "INTEGER",
          "business_meaning": "Unique identifier for each flight",
          "optimization_purpose": "Index for flight assignment",
          "sample_values": "1, 2, 3"
        },
        "airport_id": {
          "data_type": "INTEGER",
          "business_meaning": "Unique identifier for each airport",
          "optimization_purpose": "Index for flight assignment",
          "sample_values": "1, 2, 3"
        },
        "company_id": {
          "data_type": "INTEGER",
          "business_meaning": "Unique identifier for each company",
          "optimization_purpose": "Index for flight assignment",
          "sample_values": "1, 2, 3"
        },
        "assignment": {
          "data_type": "BOOLEAN",
          "business_meaning": "Binary variable indicating if flight is assigned to airport and company",
          "optimization_purpose": "Used in decision variable",
          "sample_values": "true, false"
        }
      }
    }
  }
}


CURRENT BUSINESS CONFIGURATION LOGIC:
{
  "velocity_min": {
    "sample_value": 500,
    "data_type": "INTEGER",
    "business_meaning": "Minimum velocity constraint for each flight",
    "optimization_role": "Used in velocity constraint",
    "configuration_type": "scalar_parameter"
  },
  "velocity_max": {
    "sample_value": 900,
    "data_type": "INTEGER",
    "business_meaning": "Maximum velocity constraint for each flight",
    "optimization_role": "Used in velocity constraint",
    "configuration_type": "scalar_parameter"
  },
  "altitude_min": {
    "sample_value": 30000,
    "data_type": "INTEGER",
    "business_meaning": "Minimum altitude constraint for each flight",
    "optimization_role": "Used in altitude constraint",
    "configuration_type": "scalar_parameter"
  },
  "altitude_max": {
    "sample_value": 40000,
    "data_type": "INTEGER",
    "business_meaning": "Maximum altitude constraint for each flight",
    "optimization_role": "Used in altitude constraint",
    "configuration_type": "scalar_parameter"
  },
  "fuel_consumption_formula": {
    "formula_expression": "fuel_consumption_coefficient * distance",
    "data_type": "STRING",
    "business_meaning": "Fuel consumption calculation for each flight",
    "optimization_role": "Used in objective function",
    "configuration_type": "business_logic_formula"
  }
}


TASK: Refine the optimization problem formulation by analyzing current data schema mapping and identifying requirements while maintaining LINEAR structure.

JSON STRUCTURE REQUIRED:

{
  "database_id": "flight_company",
  "iteration": 2,
  "business_context": "Updated realistic business scenario description that supports linear optimization",
  "optimization_problem_description": "Refined description of LINEAR optimization problem", 
  "optimization_formulation": {
    "objective": "refined linear minimize/maximize with mathematical precision (sum of weighted variables only)",
    "decision_variables": "clearly defined controllable linear variables (continuous or integer)",
    "constraints": "mathematically precise LINEAR constraint definitions (no variable products or divisions) - maintain 2 to 20 constraints"
  },
  
  "current_optimization_to_schema_mapping": {
    "objective_coefficients": {
      "coefficient_name[indices]": {
        "currently_mapped_to": "table.column OR business_configuration_logic.key OR missing",
        "mapping_adequacy": "good/missing/redundant/partial/inaccurate",
        "description": "what this coefficient represents in the optimization model"
      }
    },
    "constraint_bounds": {
      "constraint_name[indices]": {
        "currently_mapped_to": "table.column OR business_configuration_logic.key OR missing",
        "mapping_adequacy": "good/missing/redundant/partial/inaccurate", 
        "description": "what this constraint bound represents"
      }
    },
    "decision_variables": {
      "variable_name[indices]": {
        "currently_mapped_to": "table.column OR business_configuration_logic.key OR missing",
        "mapping_adequacy": "good/missing/redundant/partial/inaccurate",
        "description": "what this decision variable represents",
        "variable_type": "continuous/integer/binary"
      }
    }
  },
  
  "missing_optimization_requirements": [
    "List what data/parameters are still needed for linear formulation (should be [] if all mappings are good)"
  ],
  
  "iteration_status": {
    "complete": true/false based on linear formulation completeness,
    "confidence": "updated confidence level",
    "next_focus": "What needs refinement for linear optimization OR 'Ready for convergence'"
  }
}

Response:
{
  "database_id": "flight_company",
  "iteration": 2,
  "business_context": "Optimize flight scheduling to minimize fuel consumption while ensuring all flights are assigned to an airport and operated by a company, respecting operational constraints such as velocity, altitude, and capacity limits.",
  "optimization_problem_description": "Minimize total fuel consumption across all flights by optimizing the assignment of flights to airports and companies, subject to velocity, altitude, and capacity constraints.",
  "optimization_formulation": {
    "objective": "minimize \u2211(fuel_consumption_coefficient[flight_id] \u00d7 flight_assignment_variable[flight_id, airport_id, company_id])",
    "decision_variables": "flight_assignment_variable[flight_id, airport_id, company_id] (binary)",
    "constraints": "1. \u2211(flight_assignment_variable[flight_id, airport_id, company_id]) = 1 for each flight_id (each flight must be assigned to exactly one airport and company), 2. \u2211(flight_assignment_variable[flight_id, airport_id, company_id]) \u2264 airport_capacity[airport_id] for each airport_id (airport capacity constraint), 3. \u2211(flight_assignment_variable[flight_id, airport_id, company_id]) \u2264 company_capacity[company_id] for each company_id (company capacity constraint), 4. velocity_min[flight_id] \u2264 velocity[flight_id] \u2264 velocity_max[flight_id] for each flight_id (velocity constraint), 5. altitude_min[flight_id] \u2264 altitude[flight_id] \u2264 altitude_max[flight_id] for each flight_id (altitude constraint)"
  },
  "current_optimization_to_schema_mapping": {
    "objective_coefficients": {
      "fuel_consumption_coefficient[flight_id]": {
        "currently_mapped_to": "fuel_consumption_coefficients.coefficient",
        "mapping_adequacy": "good",
        "description": "Fuel consumption coefficient for each flight"
      }
    },
    "constraint_bounds": {
      "velocity_min[flight_id]": {
        "currently_mapped_to": "velocity_constraints.velocity_min",
        "mapping_adequacy": "good",
        "description": "Minimum velocity constraint for each flight"
      },
      "velocity_max[flight_id]": {
        "currently_mapped_to": "velocity_constraints.velocity_max",
        "mapping_adequacy": "good",
        "description": "Maximum velocity constraint for each flight"
      },
      "altitude_min[flight_id]": {
        "currently_mapped_to": "altitude_constraints.altitude_min",
        "mapping_adequacy": "good",
        "description": "Minimum altitude constraint for each flight"
      },
      "altitude_max[flight_id]": {
        "currently_mapped_to": "altitude_constraints.altitude_max",
        "mapping_adequacy": "good",
        "description": "Maximum altitude constraint for each flight"
      },
      "airport_capacity[airport_id]": {
        "currently_mapped_to": "airport_capacities.capacity",
        "mapping_adequacy": "good",
        "description": "Capacity constraint for each airport"
      },
      "company_capacity[company_id]": {
        "currently_mapped_to": "company_capacities.capacity",
        "mapping_adequacy": "good",
        "description": "Capacity constraint for each company"
      }
    },
    "decision_variables": {
      "flight_assignment_variable[flight_id, airport_id, company_id]": {
        "currently_mapped_to": "flight_assignments.assignment",
        "mapping_adequacy": "good",
        "description": "Binary decision variable indicating if a flight is assigned to an airport and company",
        "variable_type": "binary"
      }
    }
  },
  "missing_optimization_requirements": [],
  "iteration_status": {
    "complete": true,
    "confidence": "high",
    "next_focus": "Ready for convergence"
  }
}
