Iteration 2 - OR_EXPERT_REFINEMENT
Sequence: 5
Timestamp: 2025-07-25 22:45:14

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": "Optimizing airline route assignments to minimize total operational costs while ensuring coverage of all required destinations and respecting airline capacities.",
  "optimization_problem": "Minimize the total operational cost of assigning airlines to routes, ensuring all routes are covered and no airline exceeds its capacity.",
  "objective": "minimize \u2211(cost_airline_route[alid, rid] \u00d7 assign_airline_route[alid, rid])",
  "table_count": 1,
  "key_changes": [
    "Added decision variable table assign_airline_route to address missing optimization requirement. Updated business configuration logic with additional scalar parameters and formulas."
  ],
  "math_consistency": "high",
  "next_iteration_focus": "Define the decision variable assign_airline_route[alid, rid] in the schema to complete the linear optimization formulation.",
  "mapping_adequacy_summary": "partially_adequate"
}

CURRENT SCHEMA:
```sql
-- Iteration 2 Database Schema
-- Objective: Added decision variable table assign_airline_route to address missing optimization requirement. Updated business configuration logic with additional scalar parameters and formulas.

CREATE TABLE cost_airline_route (
  alid INTEGER,
  rid INTEGER,
  cost FLOAT
);

CREATE TABLE capacity_airline (
  alid INTEGER,
  capacity INTEGER
);

CREATE TABLE assign_airline_route (
  alid INTEGER,
  rid INTEGER,
  assign BOOLEAN
);


```

CURRENT DATA DICTIONARY:
{
  "tables": {
    "cost_airline_route": {
      "business_purpose": "cost of assigning a specific airline to a specific route",
      "optimization_role": "objective_coefficients",
      "columns": {
        "alid": {
          "data_type": "INTEGER",
          "business_meaning": "airline ID",
          "optimization_purpose": "identifier for airline",
          "sample_values": "1, 2, 3"
        },
        "rid": {
          "data_type": "INTEGER",
          "business_meaning": "route ID",
          "optimization_purpose": "identifier for route",
          "sample_values": "1, 2, 3"
        },
        "cost": {
          "data_type": "FLOAT",
          "business_meaning": "cost of assigning airline to route",
          "optimization_purpose": "coefficient in objective function",
          "sample_values": "1000.0, 1500.0, 2000.0"
        }
      }
    },
    "capacity_airline": {
      "business_purpose": "maximum number of routes an airline can handle",
      "optimization_role": "constraint_bounds",
      "columns": {
        "alid": {
          "data_type": "INTEGER",
          "business_meaning": "airline ID",
          "optimization_purpose": "identifier for airline",
          "sample_values": "1, 2, 3"
        },
        "capacity": {
          "data_type": "INTEGER",
          "business_meaning": "maximum number of routes",
          "optimization_purpose": "upper bound in capacity constraint",
          "sample_values": "5, 10, 15"
        }
      }
    },
    "assign_airline_route": {
      "business_purpose": "binary decision variable indicating if airline alid is assigned to route rid",
      "optimization_role": "decision_variables",
      "columns": {
        "alid": {
          "data_type": "INTEGER",
          "business_meaning": "airline ID",
          "optimization_purpose": "identifier for airline",
          "sample_values": "1, 2, 3"
        },
        "rid": {
          "data_type": "INTEGER",
          "business_meaning": "route ID",
          "optimization_purpose": "identifier for route",
          "sample_values": "1, 2, 3"
        },
        "assign": {
          "data_type": "BOOLEAN",
          "business_meaning": "binary decision variable",
          "optimization_purpose": "indicates if airline is assigned to route",
          "sample_values": "true, false"
        }
      }
    }
  }
}


CURRENT BUSINESS CONFIGURATION LOGIC:
{
  "operational_threshold": {
    "sample_value": 0.8,
    "data_type": "FLOAT",
    "business_meaning": "threshold for operational efficiency",
    "optimization_role": "used in evaluating airline performance",
    "configuration_type": "scalar_parameter"
  },
  "cost_calculation_formula": {
    "formula_expression": "base_operational_cost + (distance * cost_per_mile) + (fuel_cost * fuel_efficiency)",
    "data_type": "STRING",
    "business_meaning": "formula to calculate total operational cost for a flight",
    "optimization_role": "used in the 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_4",
  "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_4",
  "iteration": 2,
  "business_context": "Optimizing airline route assignments to minimize total operational costs while ensuring coverage of all required destinations and respecting airline capacities.",
  "optimization_problem_description": "Minimize the total operational cost of assigning airlines to routes, ensuring all routes are covered and no airline exceeds its capacity.",
  "optimization_formulation": {
    "objective": "minimize \u2211(cost_airline_route[alid, rid] \u00d7 assign_airline_route[alid, rid])",
    "decision_variables": "assign_airline_route[alid, rid]: binary variable indicating if airline alid is assigned to route rid",
    "constraints": [
      "\u2211(assign_airline_route[alid, rid] for all alid) = 1 for all rid (each route must be covered by exactly one airline)",
      "\u2211(assign_airline_route[alid, rid] for all rid) \u2264 capacity_airline[alid] for all alid (no airline exceeds its capacity)"
    ]
  },
  "current_optimization_to_schema_mapping": {
    "objective_coefficients": {
      "cost_airline_route[alid, rid]": {
        "currently_mapped_to": "cost_airline_route.cost",
        "mapping_adequacy": "good",
        "description": "cost of assigning airline alid to route rid"
      }
    },
    "constraint_bounds": {
      "capacity_airline[alid]": {
        "currently_mapped_to": "capacity_airline.capacity",
        "mapping_adequacy": "good",
        "description": "maximum number of routes airline alid can handle"
      }
    },
    "decision_variables": {
      "assign_airline_route[alid, rid]": {
        "currently_mapped_to": "assign_airline_route.assign",
        "mapping_adequacy": "good",
        "description": "binary decision variable indicating if airline alid is assigned to route rid",
        "variable_type": "binary"
      }
    }
  },
  "missing_optimization_requirements": [],
  "iteration_status": {
    "complete": true,
    "confidence": "high",
    "next_focus": "Ready for convergence"
  }
}
