Admin-only for optimal performance
Since keyword generation is a compute-heavy task involving deep analysis of site content, this feature is restricted to the Settings page and only accessible to administrators. It is not executed on the frontend, ensuring no impact on site performance or user experience.
Why bigrams?
Unlike single-word keywords (unigrams), bigrams such as “manga series”, “school life”, “romantic drama” offer richer context and more precise targeting. They help surface meaningful, search-friendly phrases that better match user intent.
Powered by three modern scoring metrics
The system combines three advanced statistical techniques to assess keyword strength:
- BM25 – ranks keyword relevance based on frequency and document length.
- NPMI – measures how semantically related two words are.
- LLR (Log-Likelihood Ratio) – identifies word pairings that are statistically significant.
By combining these scores, the generator produces keywords that aren’t just common — they’re meaningful and content-representative.
Smart weighting based on titles and user interaction
The algorithm prioritizes post titles (with 3x weight) and factors in views and comment counts to emphasize content that is currently engaging users. This ensures the most relevant and active topics influence keyword selection.
Thorough noise filtering and stopword removal
A language-aware stopword list is applied (supporting both Vietnamese and English), and the system filters out meaningless terms, very short words, numbers, and special characters — keeping only clean, useful phrases.
Generates up to 15 diverse, high-quality keywords
From thousands of possible candidates, the tool selects a curated list of up to 15 keywords that are both statistically strong and semantically diverse — perfect for seeding search suggestion logic or custom autocomplete fields.
Built with performance and security in mind
This admin-side feature is protected with nonce validation and user permission checks, runs via secure AJAX, and does not expose any data or logic to the frontend. It’s safe, fast, and designed to scale even on large content-heavy sites.
Conclusion
The Bigram Keyword Generator in Init Live Search v1.8.0 gives administrators powerful new control over search keyword optimization. By blending cutting-edge statistical techniques with thoughtful UX design, it elevates backend search tuning to a new level — without sacrificing performance or simplicity.
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