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<!doctype html>
<html lang="en">
<head>
<title>Upload Reviews or Enter Text</title>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<style>
body {
font-family: Arial, sans-serif;
text-align: center;
margin: 0;
padding: 0;
background-color: #f4f4f4;
color: #333;
}
h1, h2 {
color: #000000;
}
form {
margin: 20px auto;
width: 80%;
max-width: 500px;
background: #fff;
padding: 20px;
border: 1px solid #ddd;
border-radius: 8px;
box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.1);
}
input[type="file"], textarea {
width: 100%;
margin-bottom: 10px;
}
input[type="submit"] {
background: #000000;
color: #fff;
border: none;
padding: 10px 20px;
border-radius: 5px;
cursor: pointer;
font-size: 16px;
}
input[type="submit"]:hover {
background: #333;
}
.progress-container {
width: 100%;
background-color: #f3f3f3;
border-radius: 5px;
margin-top: 10px;
display: none;
}
.progress-bar {
width: 0%;
height: 20px;
background-color: #4caf50;
text-align: center;
line-height: 20px;
color: white;
border-radius: 5px;
}
.loading {
display: none;
font-weight: bold;
color: #007BFF;
}
.error-message {
color: red;
margin-top: 10px;
}
.positive {
color: green;
}
.negative {
color: blue;
}
/* File Upload Specification Styles */
.file-upload-specifications {
background-color: #f8f8f8;
border: 1px solid #ddd;
border-radius: 8px;
padding: 15px;
margin-top: 20px;
margin-bottom: 20px;
box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.1);
text-align: left;
width: 80%;
max-width: 600px;
margin-left: auto;
margin-right: auto;
}
.file-upload-specifications h3 {
color: #000000;
text-align: center;
}
.file-upload-specifications ul {
text-align: left;
list-style: disc;
margin-left: 20px;
}
</style>
</head>
<body>
<h1>BERT-Based Sentiment Analyzer 1.0</h1>
<h2>-Upload File-</h2>
<form id="upload-form" enctype="multipart/form-data">
<input type="file" id="file" name="file" accept=".csv" required>
<input type="submit" value="Upload and Analyze">
<div class="progress-container">
<div class="progress-bar" id="upload-progress-bar">0%</div>
</div>
<p class="loading">Processing... Please wait.</p>
<div id="fileError" class="error-message"></div>
</form>
<h2>Or Enter Text for Sentiment Analysis</h2>
<form id="text-form">
<textarea id="text" name="text" rows="4" cols="50"></textarea><br>
<input type="submit" value="Predict Sentiment">
<div class="progress-container">
<div class="progress-bar" id="text-progress-bar">0%</div>
</div>
<p class="loading">Processing... Please wait.</p>
<div id="textError" class="error-message"></div>
</form>
<h2>Sentiment:</h2>
<p id="sentiment" class="hidden"></p>
<p id="confidence" class="hidden"></p>
<script>
$(document).ready(function() {
// Handle Text Analysis
$("#text-form").submit(function(event) {
event.preventDefault();
// Clear old sentiment and confidence values
$("#sentiment").text("").hide();
$("#confidence").text("").hide();
$("#textError").text("");
// Show progress bar
$("#text-progress-bar").parent().show();
$("#text-progress-bar").css("width", "50%").text("Processing...");
$(".loading").show();
$.ajax({
url: "/analyze_text",
type: "POST",
data: { text: $("#text").val() },
success: function(response) {
$("#text-progress-bar").css("width", "100%").text("Done!");
$(".loading").hide();
$("#sentiment").text("Sentiment: " + response.sentiment).attr("class", response.sentiment.toLowerCase()).show();
$("#confidence").text("Confidence: " + response.confidence + "%").show();
},
error: function(xhr) {
$("#textError").text("Error: " + xhr.responseJSON.error);
}
});
});
// Handle File Upload
$("#upload-form").submit(function(event) {
event.preventDefault();
let formData = new FormData(this);
$("#upload-progress-bar").parent().show();
$("#upload-progress-bar").css("width", "50%").text("Uploading...");
$(".loading").show();
$.ajax({
url: "/uploader",
type: "POST",
data: formData,
processData: false,
contentType: false,
success: function(response) {
$("#upload-progress-bar").css("width", "100%").text("Done!");
$(".loading").hide();
document.open();
document.write(response);
document.close();
},
error: function() {
$("#fileError").text("Error: Could not upload file.");
}
});
});
});
</script>
<!-- File Upload Specifications -->
<div class="file-upload-specifications">
<a href="/download-sample">
<h3>📥 Download and use sample data </h3>
</a>
<h3>📄 File Upload Specifications:</h3>
<p>Please ensure your file adheres to the following specifications for successful analysis:</p>
<ul>
<li><strong>File Format:</strong> CSV (Comma-Separated Values)</li>
<li><strong>Required Column:</strong> The file must contain a column named <code>'review'</code>.</li>
<li><strong>'review' Column:</strong> This column should contain the text of the reviews or sentiments to be analyzed.</li>
<li><strong>Maximum File Size:</strong> 5MB</li>
<li><strong>Encoding:</strong> UTF-8 encoding is recommended for compatibility.</li>
<li><strong>Example:</strong> The first column should be named <code>'review'</code> and contain the review text. Additional columns are optional and will be ignored.</li>
</ul>
<p>If your file does not meet these specifications, the analysis may not be performed correctly.</p>
</div>
<div class="footer">
Project by Philip Obiorah & Supervised by: Prof. Hongbo Du<br>
Submitted to the University of Buckingham, in partial fulfilment of the requirements for the degree of Master of Science in Applied Data Science.<br>
© 2023 University of Buckingham. All rights reserved.<br>
<small>Last updated: <time datetime="2023-12-15">February 10, 2025</time>.</small>
</div>
</body>
</html>
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