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Reading Between the Lines (and the Users): Why Sarcasm Detection Finally Needs Memory

A compliment is dangerous data. In a customer forum, “great service” may mean satisfaction. In a political thread, “what a brilliant decision” may mean the opposite. In a fan community, “this movie ticket was totally worth it—two hours that felt like five” is not a finance review. It is a small funeral for the viewer’s patience. ...

April 12, 2026 · 17 min · Zelina
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The Token Trial: Putting Words on the Stand in LLMs

Prompt failures rarely announce themselves with a dramatic explosion. More often, they arrive as a polite, plausible answer that quietly ignores the one word that mattered. A compliance assistant misses “not.” A summarizer preserves the general topic but drops the exception. A customer-support bot treats “refund denied” and “refund approved” as neighbors because the surrounding sentence looks familiar enough. Nobody panics at first. The output is fluent. The dashboard is green. The meeting is calm. Then someone asks the inconvenient question: which part of the prompt actually controlled the answer? ...

April 3, 2026 · 17 min · Zelina
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From Meaning to Motion: How AI Learns What Text *Does*

Most document AI still behaves like a very diligent librarian with one bad habit: it files things by subject even when the useful question is about function. A customer support message about a refund, a legal paragraph about a breach, and a sales call transcript about price resistance may share almost no vocabulary. Standard embeddings will usually respect that difference. Finance goes with finance, legal goes with legal, complaints go with complaints. Neat shelves. Terrible diagnosis. ...

March 21, 2026 · 19 min · Zelina
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When Words Start Walking: Rethinking Semantic Search Beyond Averages

Search fails in a very ordinary way. A lawyer looks for a clause without remembering the exact wording. A finance analyst searches a prospectus for an operating-profit statement, but types only the economic idea. A compliance officer remembers a person’s role, not the sentence where the role was declared. The system returns either too much, too little, or the wrong thing wearing the right keywords. Everyone then calls it “semantic search,” because apparently disappointment sounds better in Greek. ...

February 8, 2026 · 15 min · Zelina
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Big AI and the Metacrisis: When Scaling Becomes a Liability

Scale is one of business’s favourite words. A product that scales can serve more customers without proportionally increasing costs. A platform that scales becomes harder to displace. An infrastructure provider that scales can convert technical advantage into market power. The awkward question is what else scales with it. More AI usage can mean more useful outputs, lower unit costs, and wider access. It can also mean more infrastructure demand, more dependence on dominant platforms, more synthetic content competing for attention, and more institutional influence concentrated among the organisations able to build frontier systems. ...

January 2, 2026 · 18 min · Zelina
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Ethics Isn’t a Footnote: Teaching NLP Responsibility the Hard Way

Training usually ends with a green tick. Employees watch a video, answer several questions whose correct responses are not exactly mysterious, and confirm that they understand the policy. The organization records completion. Everyone returns to work with roughly the same judgment they had before, plus one more certificate in the learning-management system. ...

January 2, 2026 · 16 min · Zelina
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Reading the Room: When Long-Document Models Finally Learn to Pay Attention

A document rarely fails its reader all at once. More often, the trouble is local. One paragraph quietly assumes too much background knowledge. One sentence carries three clauses and a hidden definition. One legal or medical instruction is technically correct but operationally useless because the intended reader cannot parse it without a second coffee and mild spiritual assistance. ...

November 29, 2025 · 14 min · Zelina
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Titles, Not Tokens: Making Job Matching Explainable with STR + KGs

Recruiters do not match job titles the way search boxes do. A search box sees “Chief Executive Officer” and “Managing Director” and notices the obvious problem: almost no shared words. A recruiter sees the less obvious truth: these can be functionally close roles. Then the same recruiter sees “Director of Sales” and “Vice President, Marketing” and understands a different kind of relationship: not identical, but adjacent enough to matter. ...

September 17, 2025 · 13 min · Zelina