Segmentation by Types distinguishes four methodological families that shape adoption curves and cost structures. Rule‑based systems, relying on handcrafted linguistic patterns, occupy a modest 10 % of the market, favored in highly regulated domains where interpretability is paramount. Machine‑learning approaches—encompassing supervised, unsupervised, and semi‑supervised models—represent the dominant 45 % share, reflecting their scalability across diverse corpora and the decreasing cost of labeled data. Within this family, supervised classifiers (e.g., SVM, random forest) dominate commercial deployments, while unsupervised clustering (e.g., k‑means) fuels exploratory analytics. Hybrid solutions, which blend deterministic rules with statistical learning, hold 20 % of market value, offering balanced accuracy and explainability for complex linguistic contexts. Finally, deep‑learning architectures (transformers, CNN‑RNN hybrids) command the remaining 25 %, driven by breakthroughs in contextual embeddings that substantially improve performance on sentiment, entity, and topic tasks, thereby expanding the overall market footprint.