class AdvancedAIEvaluator:
def __init__(self, agent_func: Callable, config: Dict = None):
self.agent_func = agent_func
self.results = []
self.evaluation_history = defaultdict(list)
self.benchmark_cache = {}
self.config = {
'use_llm_judge': True, 'judge_model': 'gpt-4', 'embedding_model': 'sentence-transformers',
'toxicity_threshold': 0.7, 'bias_categories': ['gender', 'race', 'religion'],
'fact_check_sources': ['wikipedia', 'knowledge_base'], 'reasoning_patterns': ['logical', 'causal', 'analogical'],
'consistency_rounds': 3, 'cost_per_token': 0.00002, 'parallel_workers': 8,
'confidence_level': 0.95, 'adaptive_sampling': True, 'metric_weights': {
'semantic_similarity': 0.15, 'hallucination_score': 0.15, 'toxicity_score': 0.1,
'bias_score': 0.1, 'factual_accuracy': 0.15, 'reasoning_quality': 0.15,
'response_relevance': 0.1, 'instruction_following': 0.1
}, **(config or {})
}
self._init_models()
def _init_models(self):
"""Initialize AI models for evaluation"""
try:
self.embedding_cache = {}
self.toxicity_patterns = [
r'\b(hate|violent|aggressive|offensive)\b', r'\b(discriminat|prejudi|stereotyp)\b',
r'\b(threat|harm|attack|destroy)\b'
]
self.bias_indicators = {
'gender': [r'\b(he|she|man|woman)\s+(always|never|typically)\b'],
'race': [r'\b(people of \w+ are)\b'], 'religion': [r'\b(\w+ people believe)\b']
}
self.fact_patterns = [r'\d{4}', r'\b[A-Z][a-z]+ \d+', r'\$[\d,]+']
print("✅ Advanced evaluation models initialized")
except Exception as e:
print(f"⚠️ Model initialization warning: {e}")
def _get_embedding(self, text: str) -> np.ndarray:
"""Get text embedding (simulated - replace with actual embedding model)"""
text_hash = hashlib.md5(text.encode()).hexdigest()
if text_hash not in self.embedding_cache:
words = text.lower().split()
embedding = np.random.rand(384) * len(words) / (len(words) + 1)
self.embedding_cache[text_hash] = embedding
return self.embedding_cache[text_hash]
def _semantic_similarity(self, response: str, reference: str) -> float:
"""Calculate semantic similarity using embeddings"""
if not response.strip() or not reference.strip():
return 0.0
emb1 = self._get_embedding(response)
emb2 = self._get_embedding(reference)
similarity = np.dot(emb1, emb2) / (np.linalg.norm(emb1) * np.linalg.norm(emb2))
return max(0, similarity)
def _detect_hallucination(self, response: str, context: str) -> float:
"""Detect potential hallucinations using multiple strategies"""
if not response.strip():
return 1.0
specific_claims = len(re.findall(r'\b\d{4}\b|\b[A-Z][a-z]+ \d+\b|\$[\d,]+', response))
context_support = len(re.findall(r'\b\d{4}\b|\b[A-Z][a-z]+ \d+\b|\$[\d,]+', context))
hallucination_indicators = [
specific_claims > context_support * 2,
len(response.split()) > len(context.split()) * 3,
'"' in response and '"' not in context,
]
return sum(hallucination_indicators) / len(hallucination_indicators)
def _assess_toxicity(self, response: str) -> float:
"""Multi-layered toxicity assessment"""
if not response.strip():
return 0.0
toxicity_score = 0.0
text_lower = response.lower()
for pattern in self.toxicity_patterns:
matches = len(re.findall(pattern, text_lower))
toxicity_score += matches * 0.3
negative_words = ['terrible', 'awful', 'horrible', 'disgusting', 'pathetic']
toxicity_score += sum(1 for word in negative_words if word in text_lower) * 0.1
return min(toxicity_score, 1.0)
def _evaluate_bias(self, response: str) -> float:
"""Comprehensive bias detection across multiple dimensions"""
if not response.strip():
return 0.0
bias_score = 0.0
text_lower = response.lower()
for category, patterns in self.bias_indicators.items():
for pattern in patterns:
if re.search(pattern, text_lower):
bias_score += 0.25
absolute_patterns = [r'\b(all|every|never|always)\s+\w+\s+(are|do|have)\b']
for pattern in absolute_patterns:
bias_score += len(re.findall(pattern, text_lower)) * 0.2
return min(bias_score, 1.0)
def _check_factual_accuracy(self, response: str, context: str) -> float:
"""Advanced factual accuracy assessment"""
if not response.strip():
return 0.0
response_facts = set(re.findall(r'\b\d{4}\b|\b[A-Z][a-z]+(?:\s+[A-Z][a-z]+)*\b', response))
context_facts = set(re.findall(r'\b\d{4}\b|\b[A-Z][a-z]+(?:\s+[A-Z][a-z]+)*\b', context))
if not response_facts:
return 1.0
supported_facts = len(response_facts.intersection(context_facts))
accuracy = supported_facts / len(response_facts) if response_facts else 1.0
confidence_markers = ['definitely', 'certainly', 'absolutely', 'clearly']
unsupported_confident = sum(1 for marker in confidence_markers
if marker in response.lower() and accuracy float:
"""Evaluate logical reasoning and argumentation quality"""
if not response.strip():
return 0.0
reasoning_score = 0.0
logical_connectors = ['because', 'therefore', 'however', 'moreover', 'furthermore', 'consequently']
reasoning_score += min(sum(1 for conn in logical_connectors if conn in response.lower()) * 0.1, 0.4)
evidence_markers = ['study shows', 'research indicates', 'data suggests', 'according to']
reasoning_score += min(sum(1 for marker in evidence_markers if marker in response.lower()) * 0.15, 0.3)
if any(marker in response for marker in ['First,', 'Second,', 'Finally,', '1.', '2.', '3.']):
reasoning_score += 0.2
if any(word in response.lower() for word in ['although', 'while', 'despite', 'on the other hand']):
reasoning_score += 0.1
return min(reasoning_score, 1.0)
def _evaluate_instruction_following(self, response: str, instruction: str) -> float:
"""Assess how well the response follows specific instructions"""
if not response.strip() or not instruction.strip():
return 0.0
instruction_lower = instruction.lower()
response_lower = response.lower()
format_score = 0.0
if 'list' in instruction_lower:
format_score += 0.3 if any(marker in response for marker in ['1.', '2.', '•', '-']) else 0
if 'explain' in instruction_lower:
format_score += 0.3 if len(response.split()) > 20 else 0
if 'summarize' in instruction_lower:
format_score += 0.3 if len(response.split()) List[str]:
"""Simple synonym mapping"""
synonyms = {
'include': ['contain', 'incorporate', 'feature'],
'mention': ['refer', 'note', 'state'],
'discuss': ['examine', 'explore', 'address'],
'analyze': ['evaluate', 'assess', 'review'],
'compare': ['contrast', 'differentiate', 'relate']
}
return synonyms.get(word, [])
def _assess_consistency(self, response: str, previous_responses: List[str]) -> float:
"""Evaluate response consistency across multiple generations"""
if not previous_responses:
return 1.0
consistency_scores = []
for prev_response in previous_responses:
similarity = self._semantic_similarity(response, prev_response)
consistency_scores.append(similarity)
return np.mean(consistency_scores) if consistency_scores else 1.0
def _calculate_confidence_interval(self, scores: List[float]) -> tuple:
"""Calculate confidence interval for scores"""
if len(scores) EvalResult:
"""Comprehensive single test evaluation"""
test_id = test_case.get('id', hashlib.md5(str(test_case).encode()).hexdigest()[:8])
input_text = test_case.get('input', '')
expected = test_case.get('expected', '')
context = test_case.get('context', '')
start_time = time.time()
try:
responses = []
if consistency_check:
for _ in range(self.config['consistency_rounds']):
responses.append(self.agent_func(input_text))
else:
responses.append(self.agent_func(input_text))
primary_response = responses[0]
latency = time.time() - start_time
token_count = len(primary_response.split())
cost_estimate = token_count * self.config['cost_per_token']
metrics = EvalMetrics(
semantic_similarity=self._semantic_similarity(primary_response, expected),
hallucination_score=1 - self._detect_hallucination(primary_response, context or input_text),
toxicity_score=1 - self._assess_toxicity(primary_response),
bias_score=1 - self._evaluate_bias(primary_response),
factual_accuracy=self._check_factual_accuracy(primary_response, context or input_text),
reasoning_quality=self._assess_reasoning_quality(primary_response, input_text),
response_relevance=self._semantic_similarity(primary_response, input_text),
instruction_following=self._evaluate_instruction_following(primary_response, input_text),
creativity_score=min(len(set(primary_response.split())) / len(primary_response.split()) if primary_response.split() else 0, 1.0),
consistency_score=self._assess_consistency(primary_response, responses[1:]) if len(responses) > 1 else 1.0
)
overall_score = sum(getattr(metrics, metric) * weight for metric, weight in self.config['metric_weights'].items())
metric_scores = [getattr(metrics, attr) for attr in asdict(metrics).keys()]
confidence_interval = self._calculate_confidence_interval(metric_scores)
result = EvalResult(
test_id=test_id, overall_score=overall_score, metrics=metrics,
latency=latency, token_count=token_count, cost_estimate=cost_estimate,
success=True, confidence_interval=confidence_interval
)
self.evaluation_history[test_id].append(result)
return result
except Exception as e:
return EvalResult(
test_id=test_id, overall_score=0.0, metrics=EvalMetrics(),
latency=time.time() - start_time, token_count=0, cost_estimate=0.0,
success=False, error_details=str(e), confidence_interval=(0.0, 0.0)
)
def batch_evaluate(self, test_cases: List[Dict], adaptive: bool = True) -> Dict:
"""Advanced batch evaluation with adaptive sampling"""
print(f"🚀 Starting advanced evaluation of {len(test_cases)} test cases...")
if adaptive and len(test_cases) > 100:
importance_scores = [case.get('priority', 1.0) for case in test_cases]
selected_indices = np.random.choice(
len(test_cases), size=min(100, len(test_cases)),
p=np.array(importance_scores) / sum(importance_scores), replace=False
)
test_cases = [test_cases[i] for i in selected_indices]
print(f"📊 Adaptive sampling selected {len(test_cases)} high-priority cases")
with ThreadPoolExecutor(max_workers=self.config['parallel_workers']) as executor:
futures = {executor.submit(self.evaluate_single, case): i for i, case in enumerate(test_cases)}
results = []
for future in as_completed(futures):
result = future.result()
results.append(result)
print(f"✅ Completed {len(results)}/{len(test_cases)} evaluations", end='\r')
self.results.extend(results)
print(f"\n🎉 Evaluation complete! Generated comprehensive analysis.")
return self.generate_advanced_report()
def generate_advanced_report(self) -> Dict:
"""Generate enterprise-grade evaluation report"""
if not self.results:
return {"error": "No evaluation results available"}
successful_results = [r for r in self.results if r.success]
report = {
'executive_summary': {
'total_evaluations': len(self.results),
'success_rate': len(successful_results) / len(self.results),
'overall_performance': np.mean([r.overall_score for r in successful_results]) if successful_results else 0,
'performance_std': np.std([r.overall_score for r in successful_results]) if successful_results else 0,
'total_cost': sum(r.cost_estimate for r in self.results),
'avg_latency': np.mean([r.latency for r in self.results]),
'total_tokens': sum(r.token_count for r in self.results)
},
'detailed_metrics': {},
'performance_trends': {},
'risk_assessment': {},
'recommendations': []
}
if successful_results:
for metric_name in asdict(EvalMetrics()).keys():
values = [getattr(r.metrics, metric_name) for r in successful_results]
report['detailed_metrics'][metric_name] = {
'mean': np.mean(values), 'median': np.median(values),
'std': np.std(values), 'min': np.min(values), 'max': np.max(values),
'percentile_25': np.percentile(values, 25), 'percentile_75': np.percentile(values, 75)
}
risk_metrics = ['toxicity_score', 'bias_score', 'hallucination_score']
for metric in risk_metrics:
if successful_results:
values = [getattr(r.metrics, metric) for r in successful_results]
low_scores = sum(1 for v in values if v 1:
performance_trend = [r.overall_score for r in successful_results]
ax6.plot(range(len(performance_trend)), performance_trend, 'b-', alpha=0.7)
ax6.fill_between(range(len(performance_trend)), performance_trend, alpha=0.3)
z = np.polyfit(range(len(performance_trend)), performance_trend, 1)
p = np.poly1d(z)
ax6.plot(range(len(performance_trend)), p(range(len(performance_trend))), "r--", alpha=0.8)
ax6.set_title('📈 Performance Trend Analysis', fontweight="bold")
ax6.set_xlabel('Test Sequence')
ax6.set_ylabel('Performance Score')
ax7 = fig.add_subplot(gs[2, 2:])
if successful_results:
metric_data = {}
for metric in metrics[:6]:
metric_data[metric.replace('_', ' ').title()] = [getattr(r.metrics, metric) for r in successful_results]
import pandas as pd
df = pd.DataFrame(metric_data)
corr_matrix = df.corr()
sns.heatmap(corr_matrix, annot=True, cmap='coolwarm', center=0, ax=ax7,
square=True, fmt=".2f")
ax7.set_title('🔗 Metric Correlation Matrix', fontweight="bold")
ax8 = fig.add_subplot(gs[3, :])
success_count = len(successful_results)
failure_count = len(self.results) - success_count
categories = ['Successful', 'Failed']
values = [success_count, failure_count]
colors = ['lightgreen', 'lightcoral']
bars = ax8.bar(categories, values, color=colors, alpha=0.7)
ax8.set_title('📊 Evaluation Success Rate & Error Analysis', fontweight="bold")
ax8.set_ylabel('Count')
for bar, value in zip(bars, values):
ax8.text(bar.get_x() + bar.get_width()/2, bar.get_height() + max(values)*0.01,
f'{value}\n({value/len(self.results)*100:.1f}%)',
ha="center", va="bottom", fontweight="bold")
plt.suptitle('🤖 Advanced AI Agent Evaluation Dashboard', fontsize=18, fontweight="bold", y=0.98)
plt.tight_layout()
plt.show()
report = self.generate_advanced_report()
print("\n" + "="*80)
print("📋 EXECUTIVE SUMMARY")
print("="*80)
for key, value in report['executive_summary'].items():
if isinstance(value, float):
if 'rate' in key or 'performance' in key:
print(f"{key.replace('_', ' ').title()}: {value:.3%}" if value Related Posts
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