Building production text classification systems: spam detection, sentiment analysis, content moderation. Uses transformers (BERT, RoBERTa), handles imbalanced/multi-label data, domain adaptation. Salary band: 120–190k USD. Time to learn: 6–8 weeks. Adjacent to NLP, transformers, and ML engineering. High demand for content moderation and search ranking.
Text classification is the task of assigning one or more predefined categories to text documents. Advanced approaches use pre-trained transformer models (BERT, RoBERTa, DistilBERT) fine-tuned on task-specific data. Applications include spam detection, sentiment analysis, content moderation, search ranking, and document organization. Advanced text classification handles realistic challenges: imbalanced classes (99% of emails are not spam), multi-label scenarios (one document fits multiple categories), domain shifts (training on news, predicting on social media), and production constraints (latency, cost).
| 地区 | 初级 | 中级 | 高级 |
|---|---|---|---|
| USA | $95k | $155k | $220k |
| UK | $52k | $95k | $140k |
| EU | $58k | $100k | $150k |
| CANADA | $90k | $145k | $210k |
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