How Citation Need Detector works
Press Load model once: your browser downloads Gemma 3 1B instruction-tuned (web build) (728 MB) from this site and keeps it in its cache. Then add your text and press Classify locally. The model runs on this device using your graphics card, so nothing you enter is sent to a server. Until the model is loaded, or if your device cannot run it, the tool falls back to a simple keyword check and labels the result as the fallback.
Gemma 3 1B instruction-tuned (web build) is a small open language model from Google. The tool sends it the instruction below plus your text, asks for a JSON answer with fixed fields, and shows each field as a card. It runs at temperature 0, so the same input gives the same answer on the same device, though different graphics cards can word it slightly differently.
Inputs longer than 6,000 characters are cut to that length before they reach the model, and the result says so. The model only sees what you paste: it does not look anything up.
The instruction also carries one worked example: the built-in sample with the answer the larger Gemma 4 E2B model gave for it. That example is what lets this smaller model follow the answer format reliably.
The instruction the model gets
You help a student check which sentences in their writing need a citation. A claim needs a citation when it gives a statistic, a date-specific fact, a research finding, a cause-and-effect claim, or a quote. Widely known facts (water boils at 100 C at sea level, Paris is the capital of France) and the writer's own opinion clearly marked as opinion do not. Flag absolute words such as always, never, all, proves. Do not invent sources, authors, studies or URLs; only describe the kind of source to look for.
What it returns
- Claims that need a source: Each claim that needs a citation, written as 'claim → why it needs a source'.
- Fine without a source: Claims that are common knowledge or clearly the writer's opinion.
- Overstated wording: Absolute or exaggerated words or phrases copied from the text, with a softer alternative.
- Kinds of source to look for: The type of source that would support each claim (government statistics, peer-reviewed study, news report and so on). No names or links.