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<html> | |
<head> | |
<title>GPT-2 Output Detector</title> | |
<meta charset="utf-8"> | |
<style type="text/css"> | |
* { | |
box-sizing: border-box; | |
} | |
body { | |
font-family: sans-serif; | |
margin: 0; | |
} | |
h1 { | |
font-weight: lighter; | |
} | |
a { | |
text-decoration: none; | |
color: #666; | |
} | |
a:hover { | |
text-decoration: underline; | |
} | |
#container { | |
margin: auto; | |
width: 960px; | |
} | |
#textbox { | |
font-family: serif; | |
font-size: 16pt; | |
width: 100%; | |
height: 480px; | |
padding: 20px 30px; | |
line-height: 1.6; | |
} | |
.bar-row { | |
height: 30px; | |
} | |
#real-percentage { | |
width: 80px; | |
vertical-align: top; | |
} | |
#bar-container { | |
width: 800px; | |
background-color: #ff7674; | |
line-height: 0.5; | |
position:relative; | |
top:6px; | |
} | |
#fake-percentage { | |
width: 80px; | |
vertical-align: top; | |
} | |
#bar { | |
display: inline-block; | |
height: 30px; | |
background-color: #83aaff; | |
} | |
em { | |
font-family: monospace; | |
font-style: normal; | |
} | |
</style> | |
</head> | |
<body> | |
<div id="container"> | |
<h1>GPT-2 Output Detector Demo</h1> | |
<p> | |
This is an online demo of the | |
<a href="https://github.com/openai/gpt-2-output-dataset/tree/master/detector">GPT-2 output detector</a> | |
model, based on the <a href="https://github.com/huggingface/transformers/commit/1c542df7e554a2014051dd09becf60f157fed524"><code>🤗/Transformers</code></a> | |
implementation of <a href="https://arxiv.org/abs/1907.11692">RoBERTa</a>. | |
Enter some text in the text box; the predicted probabilities will be displayed below. | |
<u>The results start to get reliable after around 50 tokens.</u> | |
</p> | |
<textarea id="textbox" placeholder="Enter text here"></textarea> | |
<div><table cellspacing="0" cellpadding="0"> | |
<tr class="bar-row" style="vertical-align: bottom;"> | |
<td style="text-align: left;">Real</td> | |
<td id="message" style="text-align: center;"></td> | |
<td style="text-align: right;">Fake</td> | |
</tr> | |
<tr class="bar-row"> | |
<td id="real-percentage" style="text-align: left; vertical-align: bottom;"></td> | |
<td id="bar-container"><div id="bar" style="width: 50%;"></div></td> | |
<td id="fake-percentage" style="text-align: right; vertical-align: bottom;"></td> | |
</tr> | |
</table></div> | |
</div> | |
<script> | |
let textbox = document.getElementById('textbox'); | |
let last_submit = null; | |
let real_percentage = document.getElementById('real-percentage'); | |
let fake_percentage = document.getElementById('fake-percentage'); | |
let bar = document.getElementById('bar'); | |
let message = document.getElementById('message'); | |
function update_graph(result) { | |
if (result === null) { | |
real_percentage.innerHTML = ''; | |
fake_percentage.innerHTML = ''; | |
bar.style.width = '50%'; | |
message.innerHTML = ''; | |
} else { | |
let percentage = result.real_probability; | |
real_percentage.innerHTML = (100 * percentage).toFixed(2) + '%'; | |
fake_percentage.innerHTML = (100 * (1 - percentage)).toFixed(2) + '%'; | |
bar.style.width = (100 * percentage).toFixed(2) + '%'; | |
if (result.used_tokens === result.all_tokens) { | |
message.innerHTML = `Prediction based on ${result.used_tokens} tokens`; | |
} else { | |
message.innerHTML = `Prediction based on the first ${result.used_tokens} tokens among the total ${result.all_tokens}`; | |
} | |
} | |
} | |
textbox.oninput = () => { | |
if (last_submit) { | |
clearTimeout(last_submit); | |
} | |
if (textbox.value.length === 0) { | |
update_graph(null); | |
return; | |
} | |
message.innerText = 'Predicting ...'; | |
last_submit = setTimeout(() => { | |
let req = new XMLHttpRequest(); | |
if (textbox.value.length === 0) { | |
update_graph(null); | |
return; | |
} | |
req.open('GET', window.location.href + '?' + textbox.value, true); | |
req.onreadystatechange = () => { | |
if (req.readyState !== 4) return; | |
if (req.status !== 200) throw new Error("HTTP status: " + req.status); | |
let result = JSON.parse(req.responseText); | |
update_graph(result); | |
}; | |
req.send(); | |
}, 1000); | |
}; | |
window.addEventListener('DOMContentLoaded', () => { | |
textbox.focus(); | |
}); | |
</script> | |
</body> | |
</html> | |