Update process_interview.py
Browse files- process_interview.py +91 -99
process_interview.py
CHANGED
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@@ -1,6 +1,3 @@
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# ==============================================================================
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# 1. IMPORTS
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# ==============================================================================
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import os
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import torch
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import numpy as np
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@@ -42,6 +39,7 @@ matplotlib.use('Agg')
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# Concurrency
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from concurrent.futures import ThreadPoolExecutor
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# ==============================================================================
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# 2. CONFIGURATION AND INITIALIZATION
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@@ -52,8 +50,11 @@ logging.getLogger("nemo_logging").setLevel(logging.ERROR)
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logging.getLogger("nemo").setLevel(logging.ERROR)
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logging.getLogger("transformers").setLevel(logging.ERROR)
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OUTPUT_DIR = "./
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os.
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device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
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PINECONE_KEY = os.getenv("PINECONE_KEY")
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@@ -65,7 +66,6 @@ if not all([PINECONE_KEY, ASSEMBLYAI_KEY, GEMINI_API_KEY]):
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# Global variables for models and services
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index, gemini_model, speaker_model, nlp, tokenizer, text_embedding_model = (None,) * 6
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def initialize_all_services_and_models():
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"""Initializes all external services and loads all AI models into memory."""
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global index, gemini_model, speaker_model, nlp, tokenizer, text_embedding_model
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@@ -85,10 +85,8 @@ def initialize_all_services_and_models():
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text_embedding_model = AutoModel.from_pretrained("distilbert-base-uncased").to(device).eval()
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logger.info("All services and models are ready.")
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initialize_all_services_and_models()
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# ==============================================================================
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# 3. HELPER AND UTILITY FUNCTIONS
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# ==============================================================================
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@@ -97,11 +95,11 @@ def temp_audio_file(suffix='.wav'):
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temp_file_path = None
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try:
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fd, temp_file_path = tempfile.mkstemp(suffix=suffix)
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os.close(fd)
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yield temp_file_path
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finally:
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if temp_file_path and os.path.exists(temp_file_path):
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def convert_to_wav(input_path: str) -> str:
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temp_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=False).name
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@@ -111,11 +109,11 @@ def convert_to_wav(input_path: str) -> str:
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subprocess.run(command, check=True, capture_output=True, text=True)
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return temp_wav_file
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except Exception as e:
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if os.path.exists(temp_wav_file):
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raise
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def transcribe(audio_path: str) -> Dict:
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try:
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headers = {"authorization": ASSEMBLYAI_KEY}
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@@ -131,21 +129,23 @@ def transcribe(audio_path: str) -> Dict:
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logger.info(f"Transcription submitted. Polling for results (ID: {transcript_id})...")
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while True:
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result = requests.get(f"https://api.assemblyai.com/v2/transcript/{transcript_id}", headers=headers).json()
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if result['status'] == 'completed':
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time.sleep(5)
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except Exception as e:
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logger.error(f"Transcription failed: {e}", exc_info=True)
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raise
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def identify_speakers(transcript: Dict, wav_file_path: str) -> List[Dict]:
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try:
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full_audio = AudioSegment.from_wav(wav_file_path)
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def process_utterance(utterance):
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start_ms, end_ms = utterance['start'], utterance['end']
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if end_ms - start_ms < 1000:
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with temp_audio_file() as temp_path:
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full_audio[start_ms:end_ms].export(temp_path, format="wav")
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with torch.no_grad():
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@@ -164,44 +164,44 @@ def identify_speakers(transcript: Dict, wav_file_path: str) -> List[Dict]:
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with ThreadPoolExecutor() as executor:
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return list(executor.map(process_utterance, transcript.get('utterances', [])))
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except Exception as e:
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logger.error(f"Speaker identification failed: {e}", exc_info=True)
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raise
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-
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def get_text_embedding(text: str) -> np.ndarray:
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with torch.no_grad():
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inputs = tokenizer(text, return_tensors="pt", truncation=True, max_length=128, padding=True).to(device)
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outputs = text_embedding_model(**inputs)
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return outputs.last_hidden_state[0, 0, :].cpu().numpy()
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-
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def extract_detailed_prosodic_features(audio_segment: AudioSegment) -> Dict:
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try:
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with temp_audio_file() as temp_path:
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audio_segment.export(temp_path, format="wav")
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y, sr = librosa.load(temp_path, sr=16000)
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if len(y) == 0:
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f0, _, _ = librosa.pyin(y, fmin=80, fmax=400, sr=sr)
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f0_values = f0[~np.isnan(f0)]
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return {'pitch_std': float(np.std(f0_values)) if len(f0_values) > 1 else 0}
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except Exception:
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return {'pitch_std': 0}
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-
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def extract_duration_feature(utterances: List[Dict]) -> List[Dict]:
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for u in utterances:
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u['prosodic_features'] = {'duration': (u['end'] - u['start']) / 1000.0}
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return utterances
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def convert_to_serializable(obj):
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if isinstance(obj, (np.integer, np.floating)):
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if isinstance(obj,
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return obj
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-
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# ==============================================================================
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# 4. CORE LOGIC - ULTIMATE ROLE CLASSIFIER
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# ==============================================================================
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@@ -209,42 +209,45 @@ def classify_roles_ultimate(utterances: List[Dict], audio_path: str) -> List[Dic
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logger.info("Starting ULTIMATE role classification with prosodic analysis...")
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full_audio = AudioSegment.from_wav(audio_path)
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speakers = {u['speaker_id'] for u in utterances if 'speaker_id' in u and not u['speaker_id'].startswith('unknown')}
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if len(speakers) < 2:
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interviewer_keywords = r'\b(what|why|how|when|where|who|which|tell me about|can you explain|describe|give me an example)\b'
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for u in utterances:
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sid, text = u.get('speaker_id'), u.get('text', '').lower()
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if sid not in speaker_data or not text:
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rule_score += 5 * len(re.findall(interviewer_keywords, text))
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rule_score += 2 if len(text.split()) < 10 else -5 if len(text.split()) > 30 else 0
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speaker_data[sid]['rule_score'] += rule_score
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segment = full_audio[u['start']:u['end']]
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prosodic_features = extract_detailed_prosodic_features(segment)
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speaker_data[sid]['prosodic_score'] += -5 if prosodic_features['pitch_std'] > 40 else 2
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speaker_data[sid]['embeddings'].append(get_text_embedding(u['text']))
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speaker_data[sid]['utterance_count'] += 1
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canonical_question_embedding = get_text_embedding("Tell me about your experience and skills.")
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for sid, data in speaker_data.items():
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if not data['embeddings']:
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avg_embedding = np.mean(data['embeddings'], axis=0).reshape(1, -1)
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data['semantic_score'] = cosine_similarity(avg_embedding, canonical_question_embedding.reshape(1, -1))[0][0]
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final_scores = {}
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for sid, data in speaker_data.items():
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if data['utterance_count'] == 0:
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avg_prosodic_score = data['prosodic_score'] / data['utterance_count']
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final_scores[sid] = (avg_rule_score * 0.5) + (data['semantic_score'] * 0.3) + (avg_prosodic_score * 0.2)
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sorted_speakers = sorted(final_scores.items(), key=lambda item: item[1], reverse=True)
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interviewer_id, interviewee_id = sorted_speakers[0][0], sorted_speakers[1][0]
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logger.info(f"Ultimate Role Classification: Interviewer -> {interviewer_id}, Interviewee -> {interviewee_id}")
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for u in utterances:
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u['role'] = 'Interviewer' if u.get('speaker_id') == interviewer_id else 'Interviewee' if u.get(
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'speaker_id') == interviewee_id else 'Unknown'
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return utterances
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-
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# ==============================================================================
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# 5. YOUR CUSTOM ANALYSIS & REPORTING FUNCTIONS
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# ==============================================================================
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try:
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y, sr = librosa.load(audio_path, sr=16000)
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interviewee_utterances = [u for u in utterances if u.get('role') == 'Interviewee']
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if not interviewee_utterances:
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segments = [y[int(u['start'] * sr / 1000):int(u['end'] * sr / 1000)] for u in interviewee_utterances]
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if not segments:
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combined_audio = np.concatenate(segments)
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total_duration = sum(u['prosodic_features']['duration'] for u in interviewee_utterances)
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total_words = sum(len(u['text'].split()) for u in interviewee_utterances)
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speaking_rate = total_words / total_duration if total_duration > 0 else 0
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filler_words = ['um', 'uh', 'like', 'you know', 'so', 'i mean']
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filler_count = sum(sum(u['text'].lower().count(fw) for fw in filler_words) for u in interviewee_utterances)
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filler_ratio = filler_count / total_words if total_words > 0 else 0
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all_words = ' '.join(u['text'].lower() for u in interviewee_utterances).split()
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word_counts = {tuple(all_words[i:i + 2]): all_words.count(tuple(all_words[i:i + 2])) for i in
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repetition_score = sum(1 for count in word_counts.values() if count > 1) / len(
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word_counts) if word_counts else 0
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f0, voiced_flag, _ = librosa.pyin(combined_audio, fmin=80, fmax=300, sr=sr)
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f0_values = f0[voiced_flag & ~np.isnan(f0)]
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pitch_mean = np.mean(f0_values) if len(f0_values) > 0 else 0
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pitch_std = np.std(f0_values) if len(f0_values) > 0 else 0
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jitter = np.mean(np.abs(np.diff(f0_values))) / pitch_mean if len(f0_values) > 1 and pitch_mean > 0 else 0
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rms = librosa.feature.rms(y=combined_audio)[0]
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intensity_mean = np.mean(rms) if len(rms) > 0 else 0
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intensity_std = np.std(rms) if len(rms) > 0 else 0
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shimmer = np.mean(np.abs(np.diff(rms))) / intensity_mean if len(rms) > 1 and intensity_mean > 0 else 0
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anxiety_score = 0.6 * (pitch_std / pitch_mean if pitch_mean > 0 else 0) + 0.4 * (jitter + shimmer)
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confidence_score = 0.7 * (1 / (1 + intensity_std)) + 0.3 * (1 / (1 + filler_ratio))
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'composite_scores': {'anxiety': float(anxiety_score), 'confidence': float(confidence_score),
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'hesitation': float(hesitation_score)}}
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except Exception as e:
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logger.error(f"Error in detailed voice analysis: {e}", exc_info=True)
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return {'error': str(e)}
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def generate_voice_interpretation(analysis: Dict) -> str:
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if 'error' in analysis:
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intensity = analysis.get('intensity_analysis', {})
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return (f"<b>Detailed Vocal Metrics Interpretation:</b><br/>"
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f"- Speaking Rate: {analysis.get('speaking_rate', 0):.2f} words/sec<br/>"
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f"- <b>Confidence Score:</b> {scores.get('confidence', 0):.3f}<br/>"
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f"- <b>Hesitation Score:</b> {scores.get('hesitation', 0):.3f}")
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-
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def generate_anxiety_confidence_chart(composite_scores: Dict, chart_path_or_buffer):
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try:
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labels = ['Anxiety', 'Confidence', 'Hesitation']
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scores = [composite_scores.get(k.lower(), 0) for k in labels]
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fig, ax = plt.subplots(figsize=(6, 4))
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ax.bar(labels, scores, color=['#FF6B6B', '#4ECDC4', '#FFA500'], edgecolor='black', width=0.5)
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ax.set_ylabel('Score')
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ax.set_title('Candidate Vocal Dynamics')
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ax.set_ylim(0, max(scores) * 1.2 if scores and max(scores) > 0 else 1)
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for bar in ax.patches:
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plt.
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plt.close(fig)
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except Exception as e:
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logger.error(f"Error generating chart: {e}")
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-
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def calculate_acceptance_probability(analysis_data: Dict) -> float:
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logger.info("Calculating final acceptance probability...")
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voice_metrics = analysis_data.get('voice_analysis_metrics', {})
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if 'error' in voice_metrics or not voice_metrics.get('composite_scores'):
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-
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hesitation = scores.get('hesitation', 0.5)
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raw_score = (confidence * 0.6) + ((1 - anxiety) * 0.2) + ((1 - hesitation) * 0.2)
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max_score = 0.6 + 0.2 + 0.2
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return round(max(10.0, min(99.0, (raw_score / max_score if max_score > 0 else 0) * 100)), 2)
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-
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# ==============================================================================
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# 6. AI-POWERED NARRATIVE AND PDF REPORTING
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# ==============================================================================
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"""Generates a comprehensive narrative report using the Gemini model, based on your prompt structure."""
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logger.info("Generating AI-powered narrative report with Gemini...")
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voice = analysis_data.get('voice_analysis_metrics', {})
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interviewee_text = "\n".join(
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[f"- {u['text']}" for u in analysis_data['transcript_with_roles'] if u.get('role') == 'Interviewee'])
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acceptance_prob = analysis_data.get('acceptance_probability', 50.0)
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prompt = f"""
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You are EvalBot, a highly experienced senior HR analyst generating a comprehensive interview evaluation report.
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Analyze deeply based on actual responses provided below. Avoid generic analysis.
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Maintain professional, HR-standard language with clear structure and bullet points.
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**Suitability Score: {acceptance_prob:.2f}%**
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### Interviewee Full Responses:
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{interviewee_text if interviewee_text else "No responses recorded."}
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-
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### Key Metrics:
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- Confidence Score: {voice.get('composite_scores', {}).get('confidence', 'N/A'):.2f}
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- Anxiety Score: {voice.get('composite_scores', {}).get('anxiety', 'N/A'):.2f}
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- Speaking Rate: {voice.get('speaking_rate', 'N/A')} words/sec
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-
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### Report Sections to Generate (Follow this structure exactly):
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**1. Executive Summary:**
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- 3 bullets summarizing performance, key strengths, and hiring recommendation.
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- Provide 5 actionable recommendations and 5 clear next steps.
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"""
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try:
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response = gemini_model.generate_content(prompt)
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return response.text
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except Exception as e:
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logger.error(f"Gemini report generation failed: {e}")
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return "Error: Could not generate AI analysis report."
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-
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def create_pdf_report(analysis_data: Dict, output_path: str):
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"""Generates a detailed, professional PDF report including all analysis sections, based on your structure."""
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logger.info(f"Generating comprehensive PDF report at {output_path}...")
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fontName='Helvetica-Bold', alignment=TA_CENTER))
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styles.add(ParagraphStyle(name='H2', fontSize=14, leading=18, spaceBefore=12, spaceAfter=8,
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textColor=colors.HexColor('#0050BC'), fontName='Helvetica-Bold'))
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styles.add(ParagraphStyle(name='Body', fontSize=10, leading=14, spaceAfter=6, alignment=TA_JUSTIFY))
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story = []
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story.append(Spacer(1, 0.2 * inch))
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story.append(Paragraph(f"Candidate ID: {analysis_data.get('user_id', 'N/A')}", styles['Body']))
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story.append(Paragraph(f"Date of Analysis: {time.strftime('%B %d, %Y')}", styles['Body']))
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prob = analysis_data.get('acceptance_probability', 0)
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prob_color = 'green' if prob >= 75 else 'orange' if prob >= 50 else 'red'
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story.append(
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Paragraph(f"<b>Overall Suitability Score:</b> <font size=16 color='{prob_color}'>{prob}%</font>", styles['H2']))
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story.append(PageBreak())
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# Quantitative Analysis Page
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@@ -426,7 +423,8 @@ def create_pdf_report(analysis_data: Dict, output_path: str):
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gemini_text = analysis_data.get('gemini_report_text', 'Not available.')
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for line in gemini_text.split('\n'):
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line = line.strip()
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if not line:
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if line.startswith('**') and line.endswith('**'):
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story.append(Paragraph(line.strip('*'), styles['H3']))
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elif line.startswith('- ') or line.startswith('* '):
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@@ -437,13 +435,9 @@ def create_pdf_report(analysis_data: Dict, output_path: str):
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| 437 |
doc.build(story)
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| 438 |
logger.info("PDF report generated successfully.")
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| 439 |
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| 440 |
-
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| 441 |
# ==============================================================================
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| 442 |
# 7. MAIN PROCESSING PIPELINE
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| 443 |
# ==============================================================================
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| 444 |
-
import joblib # Added import
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| 445 |
-
import io
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-
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def process_interview(audio_path: str, user_id: str = "candidate-123") -> Dict:
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| 448 |
try:
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| 449 |
logger.info(f"Starting processing for {audio_path} (User ID: {user_id})")
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@@ -492,14 +486,13 @@ def process_interview(audio_path: str, user_id: str = "candidate-123") -> Dict:
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| 492 |
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| 493 |
logger.info("Generating report text using Gemini")
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gemini_report_text = generate_gemini_report_text(analysis_data)
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| 495 |
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| 496 |
-
base_name = f"{user_id}_{os.path.splitext(os.path.basename(audio_path))[0].
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| 497 |
-
pdf_path = os.path.join(
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| 498 |
-
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| 499 |
-
logger.error(f"Failed to create PDF report: {pdf_path}")
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| 500 |
-
raise RuntimeError("PDF report generation failed")
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| 501 |
|
| 502 |
-
json_path = os.path.join(
|
| 503 |
with open(json_path, 'w') as f:
|
| 504 |
logger.debug(f"Serializing analysis_data with keys: {list(analysis_data.keys())}")
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| 505 |
serializable_data = convert_to_serializable(analysis_data)
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@@ -516,5 +509,4 @@ def process_interview(audio_path: str, user_id: str = "candidate-123") -> Dict:
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| 516 |
logger.error(f"Processing failed: {str(e)}", exc_info=True)
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| 517 |
if 'wav_file' in locals() and os.path.exists(wav_file):
|
| 518 |
os.remove(wav_file)
|
| 519 |
-
raise
|
| 520 |
-
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|
| 1 |
import os
|
| 2 |
import torch
|
| 3 |
import numpy as np
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|
|
| 39 |
|
| 40 |
# Concurrency
|
| 41 |
from concurrent.futures import ThreadPoolExecutor
|
| 42 |
+
import joblib # Added import
|
| 43 |
|
| 44 |
# ==============================================================================
|
| 45 |
# 2. CONFIGURATION AND INITIALIZATION
|
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|
| 50 |
logging.getLogger("nemo").setLevel(logging.ERROR)
|
| 51 |
logging.getLogger("transformers").setLevel(logging.ERROR)
|
| 52 |
|
| 53 |
+
OUTPUT_DIR = "./static/outputs"
|
| 54 |
+
JSON_DIR = os.path.join(OUTPUT_DIR, "json")
|
| 55 |
+
PDF_DIR = os.path.join(OUTPUT_DIR, "pdf")
|
| 56 |
+
os.makedirs(JSON_DIR, exist_ok=True)
|
| 57 |
+
os.makedirs(PDF_DIR, exist_ok=True)
|
| 58 |
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
|
| 59 |
|
| 60 |
PINECONE_KEY = os.getenv("PINECONE_KEY")
|
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|
| 66 |
# Global variables for models and services
|
| 67 |
index, gemini_model, speaker_model, nlp, tokenizer, text_embedding_model = (None,) * 6
|
| 68 |
|
|
|
|
| 69 |
def initialize_all_services_and_models():
|
| 70 |
"""Initializes all external services and loads all AI models into memory."""
|
| 71 |
global index, gemini_model, speaker_model, nlp, tokenizer, text_embedding_model
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|
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|
| 85 |
text_embedding_model = AutoModel.from_pretrained("distilbert-base-uncased").to(device).eval()
|
| 86 |
logger.info("All services and models are ready.")
|
| 87 |
|
|
|
|
| 88 |
initialize_all_services_and_models()
|
| 89 |
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|
| 90 |
# ==============================================================================
|
| 91 |
# 3. HELPER AND UTILITY FUNCTIONS
|
| 92 |
# ==============================================================================
|
|
|
|
| 95 |
temp_file_path = None
|
| 96 |
try:
|
| 97 |
fd, temp_file_path = tempfile.mkstemp(suffix=suffix)
|
| 98 |
+
os.close(fd)
|
| 99 |
yield temp_file_path
|
| 100 |
finally:
|
| 101 |
+
if temp_file_path and os.path.exists(temp_file_path):
|
| 102 |
+
os.remove(temp_file_path)
|
| 103 |
|
| 104 |
def convert_to_wav(input_path: str) -> str:
|
| 105 |
temp_wav_file = tempfile.NamedTemporaryFile(suffix='.wav', delete=False).name
|
|
|
|
| 109 |
subprocess.run(command, check=True, capture_output=True, text=True)
|
| 110 |
return temp_wav_file
|
| 111 |
except Exception as e:
|
| 112 |
+
if os.path.exists(temp_wav_file):
|
| 113 |
+
os.remove(temp_wav_file)
|
| 114 |
+
logger.error(f"Audio conversion failed: {e}", exc_info=True)
|
| 115 |
raise
|
| 116 |
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|
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|
| 117 |
def transcribe(audio_path: str) -> Dict:
|
| 118 |
try:
|
| 119 |
headers = {"authorization": ASSEMBLYAI_KEY}
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|
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|
| 129 |
logger.info(f"Transcription submitted. Polling for results (ID: {transcript_id})...")
|
| 130 |
while True:
|
| 131 |
result = requests.get(f"https://api.assemblyai.com/v2/transcript/{transcript_id}", headers=headers).json()
|
| 132 |
+
if result['status'] == 'completed':
|
| 133 |
+
return result
|
| 134 |
+
if result['status'] == 'error':
|
| 135 |
+
raise Exception(f"Transcription failed: {result['error']}")
|
| 136 |
time.sleep(5)
|
| 137 |
except Exception as e:
|
| 138 |
+
logger.error(f"Transcription failed: {e}", exc_info=True)
|
| 139 |
raise
|
| 140 |
|
|
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|
| 141 |
def identify_speakers(transcript: Dict, wav_file_path: str) -> List[Dict]:
|
| 142 |
try:
|
| 143 |
full_audio = AudioSegment.from_wav(wav_file_path)
|
| 144 |
|
| 145 |
def process_utterance(utterance):
|
| 146 |
start_ms, end_ms = utterance['start'], utterance['end']
|
| 147 |
+
if end_ms - start_ms < 1000:
|
| 148 |
+
return {**utterance, 'speaker_id': 'unknown_short_utterance'}
|
| 149 |
with temp_audio_file() as temp_path:
|
| 150 |
full_audio[start_ms:end_ms].export(temp_path, format="wav")
|
| 151 |
with torch.no_grad():
|
|
|
|
| 164 |
with ThreadPoolExecutor() as executor:
|
| 165 |
return list(executor.map(process_utterance, transcript.get('utterances', [])))
|
| 166 |
except Exception as e:
|
| 167 |
+
logger.error(f"Speaker identification failed: {e}", exc_info=True)
|
| 168 |
raise
|
| 169 |
|
|
|
|
| 170 |
def get_text_embedding(text: str) -> np.ndarray:
|
| 171 |
with torch.no_grad():
|
| 172 |
inputs = tokenizer(text, return_tensors="pt", truncation=True, max_length=128, padding=True).to(device)
|
| 173 |
outputs = text_embedding_model(**inputs)
|
| 174 |
return outputs.last_hidden_state[0, 0, :].cpu().numpy()
|
| 175 |
|
|
|
|
| 176 |
def extract_detailed_prosodic_features(audio_segment: AudioSegment) -> Dict:
|
| 177 |
try:
|
| 178 |
with temp_audio_file() as temp_path:
|
| 179 |
audio_segment.export(temp_path, format="wav")
|
| 180 |
y, sr = librosa.load(temp_path, sr=16000)
|
| 181 |
+
if len(y) == 0:
|
| 182 |
+
return {'pitch_std': 0}
|
| 183 |
f0, _, _ = librosa.pyin(y, fmin=80, fmax=400, sr=sr)
|
| 184 |
f0_values = f0[~np.isnan(f0)]
|
| 185 |
return {'pitch_std': float(np.std(f0_values)) if len(f0_values) > 1 else 0}
|
| 186 |
except Exception:
|
| 187 |
return {'pitch_std': 0}
|
| 188 |
|
|
|
|
| 189 |
def extract_duration_feature(utterances: List[Dict]) -> List[Dict]:
|
| 190 |
for u in utterances:
|
| 191 |
u['prosodic_features'] = {'duration': (u['end'] - u['start']) / 1000.0}
|
| 192 |
return utterances
|
| 193 |
|
|
|
|
| 194 |
def convert_to_serializable(obj):
|
| 195 |
+
if isinstance(obj, (np.integer, np.floating)):
|
| 196 |
+
return obj.item()
|
| 197 |
+
if isinstance(obj, np.ndarray):
|
| 198 |
+
return obj.tolist()
|
| 199 |
+
if isinstance(obj, dict):
|
| 200 |
+
return {k: convert_to_serializable(v) for k, v in obj.items()}
|
| 201 |
+
if isinstance(obj, list):
|
| 202 |
+
return [convert_to_serializable(item) for item in obj]
|
| 203 |
return obj
|
| 204 |
|
|
|
|
| 205 |
# ==============================================================================
|
| 206 |
# 4. CORE LOGIC - ULTIMATE ROLE CLASSIFIER
|
| 207 |
# ==============================================================================
|
|
|
|
| 209 |
logger.info("Starting ULTIMATE role classification with prosodic analysis...")
|
| 210 |
full_audio = AudioSegment.from_wav(audio_path)
|
| 211 |
speakers = {u['speaker_id'] for u in utterances if 'speaker_id' in u and not u['speaker_id'].startswith('unknown')}
|
| 212 |
+
if len(speakers) < 2:
|
| 213 |
+
return utterances
|
| 214 |
+
speaker_data = {sid: {'rule_score': 0, 'prosodic_score': 0, 'utterance_count': 0, 'embeddings': []} for sid in speakers}
|
| 215 |
interviewer_keywords = r'\b(what|why|how|when|where|who|which|tell me about|can you explain|describe|give me an example)\b'
|
| 216 |
for u in utterances:
|
| 217 |
sid, text = u.get('speaker_id'), u.get('text', '').lower()
|
| 218 |
+
if sid not in speaker_data or not text:
|
| 219 |
+
continue
|
| 220 |
+
rule_score = 10 if text.endswith('?') else 0
|
| 221 |
rule_score += 5 * len(re.findall(interviewer_keywords, text))
|
| 222 |
rule_score += 2 if len(text.split()) < 10 else -5 if len(text.split()) > 30 else 0
|
| 223 |
speaker_data[sid]['rule_score'] += rule_score
|
| 224 |
+
segment = full_audio[u['start']:u['end']]
|
| 225 |
prosodic_features = extract_detailed_prosodic_features(segment)
|
| 226 |
speaker_data[sid]['prosodic_score'] += -5 if prosodic_features['pitch_std'] > 40 else 2
|
| 227 |
+
speaker_data[sid]['embeddings'].append(get_text_embedding(u['text']))
|
| 228 |
speaker_data[sid]['utterance_count'] += 1
|
| 229 |
canonical_question_embedding = get_text_embedding("Tell me about your experience and skills.")
|
| 230 |
for sid, data in speaker_data.items():
|
| 231 |
+
if not data['embeddings']:
|
| 232 |
+
data['semantic_score'] = 0
|
| 233 |
+
continue
|
| 234 |
avg_embedding = np.mean(data['embeddings'], axis=0).reshape(1, -1)
|
| 235 |
data['semantic_score'] = cosine_similarity(avg_embedding, canonical_question_embedding.reshape(1, -1))[0][0]
|
| 236 |
final_scores = {}
|
| 237 |
for sid, data in speaker_data.items():
|
| 238 |
+
if data['utterance_count'] == 0:
|
| 239 |
+
final_scores[sid] = -999
|
| 240 |
+
continue
|
| 241 |
+
avg_rule_score = data['rule_score'] / data['utterance_count']
|
| 242 |
avg_prosodic_score = data['prosodic_score'] / data['utterance_count']
|
| 243 |
final_scores[sid] = (avg_rule_score * 0.5) + (data['semantic_score'] * 0.3) + (avg_prosodic_score * 0.2)
|
| 244 |
sorted_speakers = sorted(final_scores.items(), key=lambda item: item[1], reverse=True)
|
| 245 |
interviewer_id, interviewee_id = sorted_speakers[0][0], sorted_speakers[1][0]
|
| 246 |
logger.info(f"Ultimate Role Classification: Interviewer -> {interviewer_id}, Interviewee -> {interviewee_id}")
|
| 247 |
for u in utterances:
|
| 248 |
+
u['role'] = 'Interviewer' if u.get('speaker_id') == interviewer_id else 'Interviewee' if u.get('speaker_id') == interviewee_id else 'Unknown'
|
|
|
|
| 249 |
return utterances
|
| 250 |
|
|
|
|
| 251 |
# ==============================================================================
|
| 252 |
# 5. YOUR CUSTOM ANALYSIS & REPORTING FUNCTIONS
|
| 253 |
# ==============================================================================
|
|
|
|
| 256 |
try:
|
| 257 |
y, sr = librosa.load(audio_path, sr=16000)
|
| 258 |
interviewee_utterances = [u for u in utterances if u.get('role') == 'Interviewee']
|
| 259 |
+
if not interviewee_utterances:
|
| 260 |
+
return {'error': 'No interviewee utterances found'}
|
| 261 |
segments = [y[int(u['start'] * sr / 1000):int(u['end'] * sr / 1000)] for u in interviewee_utterances]
|
| 262 |
+
if not segments:
|
| 263 |
+
return {'error': 'No valid interviewee segments to analyze.'}
|
| 264 |
combined_audio = np.concatenate(segments)
|
| 265 |
total_duration = sum(u['prosodic_features']['duration'] for u in interviewee_utterances)
|
| 266 |
total_words = sum(len(u['text'].split()) for u in interviewee_utterances)
|
| 267 |
speaking_rate = total_words / total_duration if total_duration > 0 else 0
|
| 268 |
+
filler_words = ['um', 'uh', 'like', 'you know', 'so', 'i mean']
|
| 269 |
filler_count = sum(sum(u['text'].lower().count(fw) for fw in filler_words) for u in interviewee_utterances)
|
| 270 |
filler_ratio = filler_count / total_words if total_words > 0 else 0
|
| 271 |
all_words = ' '.join(u['text'].lower() for u in interviewee_utterances).split()
|
| 272 |
+
word_counts = {tuple(all_words[i:i + 2]): all_words.count(tuple(all_words[i:i + 2])) for i in range(len(all_words) - 1)}
|
| 273 |
+
repetition_score = sum(1 for count in word_counts.values() if count > 1) / len(word_counts) if word_counts else 0
|
|
|
|
|
|
|
| 274 |
f0, voiced_flag, _ = librosa.pyin(combined_audio, fmin=80, fmax=300, sr=sr)
|
| 275 |
+
f0_values = f0[voiced_flag & ~np.isnan(f0)]
|
| 276 |
pitch_mean = np.mean(f0_values) if len(f0_values) > 0 else 0
|
| 277 |
+
pitch_std = np.std(f0_values) if len(f0_values) > 0 else 0
|
| 278 |
jitter = np.mean(np.abs(np.diff(f0_values))) / pitch_mean if len(f0_values) > 1 and pitch_mean > 0 else 0
|
| 279 |
+
rms = librosa.feature.rms(y=combined_audio)[0]
|
| 280 |
intensity_mean = np.mean(rms) if len(rms) > 0 else 0
|
| 281 |
+
intensity_std = np.std(rms) if len(rms) > 0 else 0
|
| 282 |
shimmer = np.mean(np.abs(np.diff(rms))) / intensity_mean if len(rms) > 1 and intensity_mean > 0 else 0
|
| 283 |
anxiety_score = 0.6 * (pitch_std / pitch_mean if pitch_mean > 0 else 0) + 0.4 * (jitter + shimmer)
|
| 284 |
confidence_score = 0.7 * (1 / (1 + intensity_std)) + 0.3 * (1 / (1 + filler_ratio))
|
|
|
|
| 291 |
'composite_scores': {'anxiety': float(anxiety_score), 'confidence': float(confidence_score),
|
| 292 |
'hesitation': float(hesitation_score)}}
|
| 293 |
except Exception as e:
|
| 294 |
+
logger.error(f"Error in detailed voice analysis: {e}", exc_info=True)
|
| 295 |
return {'error': str(e)}
|
| 296 |
|
|
|
|
| 297 |
def generate_voice_interpretation(analysis: Dict) -> str:
|
| 298 |
+
if 'error' in analysis:
|
| 299 |
+
return "<b>Detailed Vocal Metrics:</b><br/>Analysis not available."
|
| 300 |
+
scores = analysis.get('composite_scores', {})
|
| 301 |
+
pitch = analysis.get('pitch_analysis', {})
|
| 302 |
intensity = analysis.get('intensity_analysis', {})
|
| 303 |
return (f"<b>Detailed Vocal Metrics Interpretation:</b><br/>"
|
| 304 |
f"- Speaking Rate: {analysis.get('speaking_rate', 0):.2f} words/sec<br/>"
|
|
|
|
| 312 |
f"- <b>Confidence Score:</b> {scores.get('confidence', 0):.3f}<br/>"
|
| 313 |
f"- <b>Hesitation Score:</b> {scores.get('hesitation', 0):.3f}")
|
| 314 |
|
|
|
|
| 315 |
def generate_anxiety_confidence_chart(composite_scores: Dict, chart_path_or_buffer):
|
| 316 |
try:
|
| 317 |
+
labels = ['Anxiety', 'Confidence', 'Hesitation']
|
| 318 |
scores = [composite_scores.get(k.lower(), 0) for k in labels]
|
| 319 |
+
fig, ax = plt.subplots(figsize=(6, 4))
|
| 320 |
ax.bar(labels, scores, color=['#FF6B6B', '#4ECDC4', '#FFA500'], edgecolor='black', width=0.5)
|
| 321 |
+
ax.set_ylabel('Score')
|
| 322 |
+
ax.set_title('Candidate Vocal Dynamics')
|
| 323 |
ax.set_ylim(0, max(scores) * 1.2 if scores and max(scores) > 0 else 1)
|
| 324 |
+
for bar in ax.patches:
|
| 325 |
+
ax.text(bar.get_x() + bar.get_width() / 2, bar.get_height() + 0.01,
|
| 326 |
+
f"{bar.get_height():.2f}", ha='center', color='black')
|
| 327 |
+
plt.tight_layout()
|
| 328 |
+
plt.savefig(chart_path_or_buffer, format='png', dpi=150)
|
| 329 |
plt.close(fig)
|
| 330 |
except Exception as e:
|
| 331 |
logger.error(f"Error generating chart: {e}")
|
| 332 |
|
|
|
|
| 333 |
def calculate_acceptance_probability(analysis_data: Dict) -> float:
|
| 334 |
logger.info("Calculating final acceptance probability...")
|
| 335 |
voice_metrics = analysis_data.get('voice_analysis_metrics', {})
|
| 336 |
+
if 'error' in voice_metrics or not voice_metrics.get('composite_scores'):
|
| 337 |
+
return 30.0
|
| 338 |
+
scores = voice_metrics['composite_scores']
|
| 339 |
+
confidence = scores.get('confidence', 0.5)
|
| 340 |
+
anxiety = scores.get('anxiety', 0.5)
|
| 341 |
hesitation = scores.get('hesitation', 0.5)
|
| 342 |
raw_score = (confidence * 0.6) + ((1 - anxiety) * 0.2) + ((1 - hesitation) * 0.2)
|
| 343 |
max_score = 0.6 + 0.2 + 0.2
|
| 344 |
return round(max(10.0, min(99.0, (raw_score / max_score if max_score > 0 else 0) * 100)), 2)
|
| 345 |
|
|
|
|
| 346 |
# ==============================================================================
|
| 347 |
# 6. AI-POWERED NARRATIVE AND PDF REPORTING
|
| 348 |
# ==============================================================================
|
|
|
|
| 350 |
"""Generates a comprehensive narrative report using the Gemini model, based on your prompt structure."""
|
| 351 |
logger.info("Generating AI-powered narrative report with Gemini...")
|
| 352 |
voice = analysis_data.get('voice_analysis_metrics', {})
|
| 353 |
+
interviewee_text = "\n".join([f"- {u['text']}" for u in analysis_data['transcript_with_roles'] if u.get('role') == 'Interviewee'])
|
|
|
|
| 354 |
acceptance_prob = analysis_data.get('acceptance_probability', 50.0)
|
| 355 |
|
| 356 |
prompt = f"""
|
| 357 |
You are EvalBot, a highly experienced senior HR analyst generating a comprehensive interview evaluation report.
|
| 358 |
Analyze deeply based on actual responses provided below. Avoid generic analysis.
|
| 359 |
Maintain professional, HR-standard language with clear structure and bullet points.
|
|
|
|
| 360 |
**Suitability Score: {acceptance_prob:.2f}%**
|
|
|
|
| 361 |
### Interviewee Full Responses:
|
| 362 |
{interviewee_text if interviewee_text else "No responses recorded."}
|
|
|
|
| 363 |
### Key Metrics:
|
| 364 |
- Confidence Score: {voice.get('composite_scores', {}).get('confidence', 'N/A'):.2f}
|
| 365 |
- Anxiety Score: {voice.get('composite_scores', {}).get('anxiety', 'N/A'):.2f}
|
| 366 |
- Speaking Rate: {voice.get('speaking_rate', 'N/A')} words/sec
|
|
|
|
| 367 |
### Report Sections to Generate (Follow this structure exactly):
|
| 368 |
**1. Executive Summary:**
|
| 369 |
- 3 bullets summarizing performance, key strengths, and hiring recommendation.
|
|
|
|
| 378 |
- Provide 5 actionable recommendations and 5 clear next steps.
|
| 379 |
"""
|
| 380 |
try:
|
| 381 |
+
response = gemini_model.generate_content(prompt)
|
| 382 |
return response.text
|
| 383 |
except Exception as e:
|
| 384 |
+
logger.error(f"Gemini report generation failed: {e}")
|
| 385 |
return "Error: Could not generate AI analysis report."
|
| 386 |
|
|
|
|
| 387 |
def create_pdf_report(analysis_data: Dict, output_path: str):
|
| 388 |
"""Generates a detailed, professional PDF report including all analysis sections, based on your structure."""
|
| 389 |
logger.info(f"Generating comprehensive PDF report at {output_path}...")
|
|
|
|
| 393 |
fontName='Helvetica-Bold', alignment=TA_CENTER))
|
| 394 |
styles.add(ParagraphStyle(name='H2', fontSize=14, leading=18, spaceBefore=12, spaceAfter=8,
|
| 395 |
textColor=colors.HexColor('#0050BC'), fontName='Helvetica-Bold'))
|
| 396 |
+
styles.add(ParagraphStyle(name='H3', fontSize=12, leading=16, spaceBefore=10, spaceAfter=6,
|
| 397 |
+
textColor=colors.HexColor('#333333'), fontName='Helvetica-Bold'))
|
| 398 |
styles.add(ParagraphStyle(name='Body', fontSize=10, leading=14, spaceAfter=6, alignment=TA_JUSTIFY))
|
| 399 |
story = []
|
| 400 |
|
|
|
|
| 403 |
story.append(Spacer(1, 0.2 * inch))
|
| 404 |
story.append(Paragraph(f"Candidate ID: {analysis_data.get('user_id', 'N/A')}", styles['Body']))
|
| 405 |
story.append(Paragraph(f"Date of Analysis: {time.strftime('%B %d, %Y')}", styles['Body']))
|
| 406 |
+
prob = analysis_data.get('acceptance_probability', 0)
|
| 407 |
prob_color = 'green' if prob >= 75 else 'orange' if prob >= 50 else 'red'
|
| 408 |
+
story.append(Paragraph(f"<b>Overall Suitability Score:</b> <font size=16 color='{prob_color}'>{prob}%</font>", styles['H2']))
|
|
|
|
| 409 |
story.append(PageBreak())
|
| 410 |
|
| 411 |
# Quantitative Analysis Page
|
|
|
|
| 423 |
gemini_text = analysis_data.get('gemini_report_text', 'Not available.')
|
| 424 |
for line in gemini_text.split('\n'):
|
| 425 |
line = line.strip()
|
| 426 |
+
if not line:
|
| 427 |
+
continue
|
| 428 |
if line.startswith('**') and line.endswith('**'):
|
| 429 |
story.append(Paragraph(line.strip('*'), styles['H3']))
|
| 430 |
elif line.startswith('- ') or line.startswith('* '):
|
|
|
|
| 435 |
doc.build(story)
|
| 436 |
logger.info("PDF report generated successfully.")
|
| 437 |
|
|
|
|
| 438 |
# ==============================================================================
|
| 439 |
# 7. MAIN PROCESSING PIPELINE
|
| 440 |
# ==============================================================================
|
|
|
|
|
|
|
|
|
|
| 441 |
def process_interview(audio_path: str, user_id: str = "candidate-123") -> Dict:
|
| 442 |
try:
|
| 443 |
logger.info(f"Starting processing for {audio_path} (User ID: {user_id})")
|
|
|
|
| 486 |
|
| 487 |
logger.info("Generating report text using Gemini")
|
| 488 |
gemini_report_text = generate_gemini_report_text(analysis_data)
|
| 489 |
+
analysis_data['gemini_report_text'] = gemini_report_text # Add to analysis_data
|
| 490 |
|
| 491 |
+
base_name = f"{user_id}_{os.path.splitext(os.path.basename(audio_path))[0].rsplit('_', 1)[-1]}"
|
| 492 |
+
pdf_path = os.path.join(PDF_DIR, f"{base_name}_report.pdf")
|
| 493 |
+
create_pdf_report(analysis_data, pdf_path)
|
|
|
|
|
|
|
| 494 |
|
| 495 |
+
json_path = os.path.join(JSON_DIR, f"{base_name}_analysis.json")
|
| 496 |
with open(json_path, 'w') as f:
|
| 497 |
logger.debug(f"Serializing analysis_data with keys: {list(analysis_data.keys())}")
|
| 498 |
serializable_data = convert_to_serializable(analysis_data)
|
|
|
|
| 509 |
logger.error(f"Processing failed: {str(e)}", exc_info=True)
|
| 510 |
if 'wav_file' in locals() and os.path.exists(wav_file):
|
| 511 |
os.remove(wav_file)
|
| 512 |
+
raise
|
|
|