Error Pattern Analyzer

Error Pattern Analyzer — Error Pattern Analysis Tool

A specialized skill that enhances the error-analyst and diagnostician agents' error analysis capabilities.

Target Agents

• error-analyst — Error pattern classification, remediation strategy formulation
• diagnostician — Weakness identification, concept deficit diagnosis

5-Type Error Classification System

Type 1: Conceptual Gap

Definition: The core concept is not understood or is misunderstood Signal: Repeated errors on questions related to the same concept Prescription: Concept re-learning -> varied examples -> self-explanation

Example: All normalization questions answered incorrectly
-> Functional dependency concept itself is inaccurate
-> Prescription: Re-learn functional dependency + step-by-step normalization practice

Type 2: Procedural Error

Definition: The concept is understood but mistakes occur during application Signal: Errors occur at a specific step in the solution process Prescription: Step-by-step checklist + repeated practice

Example: Understands SQL JOIN concept but gets wrong results with multiple JOINs
-> JOIN order and condition application procedure error
-> Prescription: Step-by-step JOIN worksheet + progressively increasing complexity

Type 3: Careless Mistake

Definition: Understands the material but makes errors due to inattention Signal: Same question type is sometimes right, sometimes wrong; increases under time pressure Prescription: Verification habits + time management training

Type 4: Trap Error

Definition: Falls for intentional error-inducing devices set by the question writer Signal: Repeatedly selects attractive distractors Prescription: Trap pattern learning + "Why is this NOT the answer?" training

Type 5: Knowledge Gap

Definition: The area has not been studied at all Signal: Guessing-level accuracy (25%) on a specific topic Prescription: New study of the area is required

Error Analysis Report Template

### Error Analysis Results

#### 1. Error Type Distribution

| Error Type | Count | Ratio | Severity |
|-----------|-------|-------|---------|
| Conceptual gap | 8 | 32% | High |
| Procedural error | 5 | 20% | Medium |
| Careless mistake | 4 | 16% | Low |
| Trap error | 5 | 20% | Medium |
| Knowledge gap | 3 | 12% | High |

#### 2. Concept Deficit Map

[Concept A] <- Prerequisite concept
    |
[Concept B] <- Deficit discovered here
    |
[Concept C] <- Cannot learn (requires B first)

#### 3. Remediation Priority Order

1st: Re-learn Concept B (affects downstream Concept C)
2nd: New study of knowledge gap areas
3rd: Trap pattern recognition training

Concept Deficit Tracking Matrix

Prerequisite Dependency Graph

Track inter-concept dependencies to find the root deficit:

If the learner got "tree traversal" wrong:
  -> Check understanding of "recursion"
    -> Check understanding of "stack"
      -> Check understanding of "function call structure"

The lowest-level deficit = root cause

Remediation Priority Calculation

Priority = Deficit Severity x Impact Scope x Exam Frequency

Deficit severity: Complete deficit (3), Partial deficit (2), Unstable (1)
Impact scope: Number of downstream concepts (more = higher)
Exam frequency: Exam weight over last 3 years

Error Pattern Characteristics by Exam Type