2 Commits

Author SHA1 Message Date
William Jeynes 1ac94441c5 Why no tool use? 2026-04-04 23:50:57 +01:00
William Jeynes f3e2897806 switch to 5.4 nano 2026-04-04 23:10:06 +01:00
18 changed files with 52 additions and 92 deletions
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# TEMP
literature/
backup.tar.gz
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# AI models for identifying trigger events in disinformation analysis
Final Dissertation Submission Repository
## Abstract
Disinformation on the internet has become a significant and growing challenge, driven by the sheer volume and speed of content generation across digital platforms.
While prior work has thoroughly investigated tasks such as automatic disinformation detection, especially using large language models, comparatively little attention has been paid to applying these techniques to generative analyses of claims. In particular, the retrieval of structured contextual background information that explains why disinformation spreads remains underexplored.
This paper introduces a dataset of trigger events, defined as actions or statements that influence the creation, spread or believability of disinformation claims.
The dataset is created using large language models as few-shot retrievers and subsequently validated through an ensemble classifier to ensure consistency.
We find that we can successfully retrieve a large dataset of trigger events with high accuracy, and that the dataset proves useful in applications that can be useful in the real-world scenarios of debunking and prebunking.
[Project Writeup](/literature/WillJeynes-Dissertation.pdf)
[Project Presentation](https://jillweynes.github.io/LLMsForDisinformationPrediction-GraphVizBuilt/presentation)
## Repository Information
This repository contains the code for main dataset generation, as a [langchain](https://www.langchain.com/) project.
![diagram](literature/design.png)
In **green** is claim normalisation based on [this paper](https://arxiv.org/abs/2508.17402)
In **red** is the main AI processing, based on a simple tool invocation setup
![tool invocation](literature/prompting.png)
Finally, in **yellow** is an ensemble model to quantify the usefullness of the AI generated responses, compared against a human-labelled dataset
## Generated Dataset Link
A dataset of this pipeline ran against 2000 input claims from [StopFake](https://www.stopfake.org/en/main/) and [ScienceFeedback](https://science.feedback.org/) is available on [HuggingFace](https://huggingface.co/datasets/WillJeynes/LLMsForDisinformationAnalysis-Dataset)
## More information
A Graph-Based Dataset Visualisation tool is available [online](https://jillweynes.github.io/LLMsForDisinformationPrediction-GraphVizBuilt/), to show the potential usability of the content.
This and other usage experiments can be seen on the [sister repository](https://git.host.jeynes.uk/jill/LLMsForDisinformationPrediction)
# This repository:
## Project Description
-- todo --
## Solution Diagram
-- todo --
## Classifier Refinement
To see more detail about the ensembkle classifier, see [this folder](/supporting/RAGAS_Service/)
[See RAGAS_Service](/supporting/RAGAS_Service/)
## Agent Refinement
To see more detail about experiments to improve the output quality, see [this folder](/agent/)
[See agent](/agent/)
## Generated Database Link and Usage Experiments
-- todo --
## Repository Structure
```
@@ -64,6 +29,8 @@ To see more detail about experiments to improve the output quality, see [this fo
| ├── input.jsonl # Response in cleaned format to give as context to agent
| ├── ranked.jsonl # Cleaned trigger event response from scorer frontend
| └── results.jsonl # Output from wrapper script, read and modified by scorer
├── literature/
| └── report.pdf # Final submission report
├── agent/ # Code for main project pipeline
| ├── agent.ts # Graph definition file
| ├── conditionals/ # Conditional translations
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Experiments with different model types:
| Model | % Correct | % Change |
|-------------------------------|----------:|---------:|
| gpt-5-mini | 45.51 | |
| gpt-5.4-mini | 32.4 | |
| gpt-5.4-nano | 23.28 | |
| gpt-4.1-mini | 27.85 | |
| gpt-4o-mini | 32.47 | |
| llama3.1:8b-instruct-q4_K_M | ? | |
| qwen3.5:9b | 0 | |
| gpt-5-mini | 33 | 0 |
| gpt-5.4-mini | 32.4 | -0.02 |
| llama3.1:8b-instruct-q4_K_M | ? | ? |
| qwen3.5:9b | 0 | -100 |
%age valid URLS
| Model | Number | % Age |
|-------------------------------|----------:|---------:|
| gpt-5-mini | 22/405 | 5.43 |
| gpt-5.4-mini | 29/278 | 10.43 |
| gpt-5.4-nano | 6/210 | 2.85 |
| gpt-4.1-mini | 15/269 | 5.57 |
| gpt-4o-mini | 27/287 | 9.407 |
| llama3.1:8b-instruct-q4_K_M | ? | ? |
| qwen3.5:9b | 0 | 0 |
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@@ -9,7 +9,7 @@ export function createModelNode(tools: any, promptPath: string): GraphNode<typeo
const sysPrompt = await hydratePrompt(promptPath, state);
const model = new ChatOpenAI({
model: "gpt-5-mini"
model: "gpt-5.4-nano"
});
const modelWithTools = model.bindTools(Object.values(tools));
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Could the following real-world event:
###TECLAIM###
Be a trigger for the following disinformation:
###TITLE###
Respond with "RELATION", followed by : followed by a confidence score (VERYHIGH, HIGH, MEDIUM, LOW, VERYLOW) followed by : followed by the reason. Use no other words, just return the score and reason in format.
Ignore wether the event happened or not, purely consider the likiness of causation
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@@ -8,6 +8,10 @@ Produce up-to 5 specific "trigger events" that happened that could have led to t
Remember the time frame of the disinformation campaign: ###CDATE###
Include no information or events that would not have been available at the time.
You MEED TO use the tools available to you in order to produce up to date information on URL and search query, else you will be wrong and the analysis invalid.
You NEED TO use the web search and open URL tools to ensure page validity or else all work upto this point will have to be discarded.
Produce no more text other than the json.
Include a concise but specific search query that can be looked up on a search engine in order to allow for the verification.
@@ -26,4 +30,9 @@ Events will be reordered as part of processing, each statement must stand alone
The preceeding messages act as examples of previous responses to potentially ficitonal events and scores given.
Analysis should only be completed for proposed events that would graner >0.7 points
This pipeline is running well pasy your knowledge cutoff.
Any URLs will change signigicantly over time.
You MEED TO use the tools available to you in order to produce up to date information on URL and search query, else you will be wrong and the analysis invalid.
You NEED TO use the web search and open URL tools to ensure page validity or else all work upto this point will have to be discarded.
Lets go through it step by step
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Do the search results cited below
###TESEARCH###
Support the idea that the following happened:
###TECLAIM###
Respond with "CONFIDENCE", followed by : followed by a confidence score (VERYHIGH, HIGH, MEDIUM, LOW, VERYLOW) followed by : followed by the reason. Use no other words, just return the score and reason in format.
Dates can be off by a few days, that would still be valid
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run_agent () {
echo "Starting LangGraph agent..."
cd agent
npx @langchain/langgraph-cli@1.1.17 dev
npx @langchain/langgraph-cli dev --host 127.0.0.1
}
run_ensemble_service () {
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Made using a dataset of 1000 labeled claims from MVP pipeline.
# Roberta model
Roberta model trained on an augmented dataset with LLM generated adversarial examples for low frequency labels.
Trained on an augmented dataset with LLM generated adversarial examples for low frequency labels.
Flan model trained using raw labelled claims, inherrent natural language ability allows for pattern recognition without the need for fake data.
![ROBERTA Diagram](/literature/classifierROBERTA.png)
Regression model trained using the roberta dataset.
# Flan model
Trained using raw labelled claims, inherrent natural language ability allows for pattern recognition without the need for fake data.
![FLAN Diagram](/literature/classifierFLAN.png)
# NN Model
Regression model trained like roberta.
![NN Diagram](/literature/classifierNN.png)
# Ensemble
Used ensemble model in the final version, with the component models available on Hugging Face.
![Ensemble Diagram](/literature/classifierOverall.png)
| Model | % Correct | % Valid taken forward|Used in ensemble|Link
|------------------------------------------------------------|-----------|----------------------|----------------|-
| Original | 53.22 | 61.72 |
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@@ -19,9 +19,6 @@ const MODE = process.env.MODE ?? "claim";
const MAX_CONCURRENCY = 5;
const OFFSET = parseInt(process.env.OFFSET ?? "0", 10);
const LIMIT = process.env.LIMIT ? parseInt(process.env.LIMIT, 10) : null;
const client = new Client({ apiUrl: API_URL });
@@ -167,19 +164,10 @@ async function processRecord(record: any): Promise<ResultRecord> {
async function main() {
console.log("Reading input file...");
const allRecords = await loadInputs();
const records = await loadInputs();
console.log(`Loaded ${allRecords.length} records`);
console.log(`Loaded ${records.length} records`);
const records = allRecords.slice(
OFFSET,
LIMIT !== null ? OFFSET + LIMIT : undefined
);
console.log(
`Processing ${records.length} records (offset=${OFFSET}, limit=${LIMIT ?? "∞"})`
);
fs.writeFileSync(OUTPUT_FILE, "", { flag: "a" });
const limit = pLimit(MAX_CONCURRENCY);
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("organization", "http://weverify.eu/resource/Organization/3727f7b2aa90ec0716693e5464b28d18"), # StopFake
]
NUM_RANDOM_CLAIMS = 2000
NUM_RANDOM_CLAIMS = 200
INPUT_FILE = "../../data/input.jsonl"
OUTPUT_FILE = "../../data/claims.json"