Research & Insights

From the Nexi Lab

Technical deep-dives, product insights, and research from our team building AI-powered analytics for education and finance.

EducationFeb 18, 2026

How Computer Vision is Transforming Classroom Engagement Measurement

Traditional engagement surveys are subjective and infrequent. We explore how real-time gaze tracking and facial expression analysis provide continuous, objective engagement metrics — and what this means for instructors and administrators.

8 min read

FinanceFeb 10, 2026

Detecting Red Flags in Earnings Calls with NLP

Management language during earnings calls contains subtle signals. Our pipeline identifies hedging patterns, evasive responses, and capital allocation stress markers that precede guidance revisions.

12 min read

All Articles

TechnologyFeb 3, 2026

Voice AI: Mapping 46 Emotion Dimensions from Audio

Valence, arousal, and dominance only scratch the surface. We detail how Nexi's voice analysis engine extracts 46 distinct emotional dimensions from speaker audio — and how they map to engagement and authenticity.

10 min read

EducationJan 27, 2026

A Four-Category Teacher Evaluation Framework Powered by AI

Planning, classroom management, delivery, and professional standards — our AI-driven rubric scores instructors on a 1-4 scale with granular, actionable feedback that goes beyond classroom observation checklists.

7 min read

FinanceJan 20, 2026

Quantifying Forward Guidance Clarity in S&P 500 Earnings

Not all guidance is created equal. We introduce our clarity scoring methodology that rates management forward-looking statements on specificity, conviction, and consistency with historical patterns.

9 min read

SecurityJan 13, 2026

Privacy-First Design in Student Analytics Systems

Building analytics that comply with GDPR and FERPA while delivering actionable insights. We discuss our approach to data minimization, consent management, and on-device processing.

6 min read

TechnologyJan 6, 2026

Speaker Diarization at Scale: Processing 500+ Earnings Calls per Quarter

Separating CEO from CFO from analysts in real-time requires robust diarization. We share architectural decisions behind our sub-2-minute processing pipeline.

11 min read

EducationDec 30, 2025

Predicting Attention Drops Before They Happen

Our ML models analyze the first 10 minutes of a session to predict where attention will decline. Early warning signals allow instructors to adapt their delivery in real-time.

8 min read

<2 min

Average Analysis Time

95%

Detection Accuracy

S&P 500

Full Coverage

24/7

Real-Time Processing