File size: 25,456 Bytes
cc999f3 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 |
"""
English to Vietnamese Machine Translation Web Application
This module provides a Gradio-based web interface for translating English text
to Vietnamese using multiple translation approaches including rule-based,
statistical, and neural machine translation models.
"""
import logging
from pathlib import Path
from typing import Dict, Any, Tuple, Optional
import torch
import gradio as gr
from infer import ModelLoader, DEVICE, Translator
from models.statistical_mt import LanguageModel
# =============================================================================
# CONFIGURATION & CONSTANTS
# =============================================================================
# Application metadata
APP_TITLE = "English to Vietnamese Machine Translation"
APP_DESCRIPTION = "Advanced AI-powered translation with multiple model options"
MAX_INPUT_LENGTH = 1000
DEFAULT_MODEL = "mbart50"
# Example questions for users to try
EXAMPLE_QUESTIONS = [
"Hello, how are you today?",
"What time is it now?",
"I would like to order some food.",
"Where is the nearest hospital?",
"Can you help me with directions to the airport?",
"The weather is beautiful today.",
"I am learning Vietnamese language.",
"Thank you for your help.",
"How much does this cost?",
"I need to book a hotel room.",
"What is your favorite Vietnamese dish?",
"I love traveling to Vietnam.",
"Could you please speak more slowly?",
"I don't understand what you're saying.",
"Have a wonderful day!"
]
# Model configuration
MODEL_CHOICES = [
("Rule-Based MT (RBMT)", "rbmt"),
("Statistical MT (SMT)", "smt"),
("MBart50 (Neural)", "mbart50"),
("mT5 (Neural)", "mt5")
]
MODEL_DESCRIPTIONS = {
"rbmt": "Rule-based approach using linguistic rules and dictionaries",
"smt": "Statistical model trained on parallel corpora",
"mbart50": "Facebook's multilingual BART model",
"mt5": "Google's multilingual T5 transformer"
}
# =============================================================================
# LOGGING CONFIGURATION
# =============================================================================
def setup_logging() -> logging.Logger:
"""Configure and return logger instance."""
logging.basicConfig(
level=logging.INFO,
format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
handlers=[logging.StreamHandler()]
)
return logging.getLogger(__name__)
logger = setup_logging()
# =============================================================================
# MODEL MANAGEMENT
# =============================================================================
class ModelManager:
"""Manages loading and storage of translation models."""
def __init__(self):
"""Initialize model storage."""
self.models: Dict[str, Tuple[Any, Any]] = {
"mbart50": (None, None),
"mt5": (None, None),
"rbmt": (None, None),
"smt": (None, None)
}
def initialize_models(self, model_types: list[str] = None) -> None:
"""Initialize specified translation models.
Args:
model_types: List of model types to initialize.
Defaults to all available models.
"""
if model_types is None:
model_types = ["mbart50", "mt5", "rbmt", "smt"]
logger.info("Starting model initialization...")
for model_type in model_types:
try:
self._load_single_model(model_type)
except Exception as e:
logger.error(f"Failed to initialize {model_type}: {str(e)}")
self.models[model_type] = (None, None)
logger.info("Model initialization complete.")
def _load_single_model(self, model_type: str) -> None:
"""Load a single model based on its type.
Args:
model_type: Type of model to load.
"""
logger.info(f"Loading {model_type.upper()} model...")
if model_type == "mbart50":
self.models["mbart50"] = ModelLoader.load_mbart50()
logger.info(f"MBart50 model loaded on {DEVICE}")
elif model_type == "mt5":
self.models["mt5"] = ModelLoader.load_mt5()
logger.info(f"MT5 model loaded on {DEVICE}")
elif model_type == "rbmt":
from models.rule_based_mt import TransferBasedMT
self.models["rbmt"] = (TransferBasedMT(), None)
logger.info("RBMT initialized")
elif model_type == "smt":
self.models["smt"] = (ModelLoader.load_smt(), None)
logger.info("SMT initialized")
else:
raise ValueError(f"Unknown model type: {model_type}")
def get_model(self, model_type: str) -> Tuple[Any, Any]:
"""Get model and tokenizer for specified type.
Args:
model_type: Type of model to retrieve.
Returns:
Tuple of (model, tokenizer).
"""
return self.models.get(model_type, (None, None))
def is_model_loaded(self, model_type: str) -> bool:
"""Check if a model is loaded and ready.
Args:
model_type: Type of model to check.
Returns:
True if model is loaded, False otherwise.
"""
model, _ = self.get_model(model_type)
return model is not None
# =============================================================================
# TRANSLATION SERVICE
# =============================================================================
class TranslationService:
"""Handles translation requests using different models."""
def __init__(self, model_manager: ModelManager):
"""Initialize translation service.
Args:
model_manager: Instance of ModelManager for accessing models.
"""
self.model_manager = model_manager
def translate(self, model_type: str, input_text: str) -> str:
"""Translate input text using the selected model.
Args:
model_type: Type of model to use for translation.
input_text: English text to translate.
Returns:
Translated Vietnamese text or error message.
"""
# Input validation
if not input_text or not input_text.strip():
return "Please enter some text to translate."
if len(input_text) > MAX_INPUT_LENGTH:
return f"Input text too long. Maximum {MAX_INPUT_LENGTH} characters allowed."
# Check if model is loaded
if not self.model_manager.is_model_loaded(model_type):
return f"Error: Model '{model_type}' is not loaded or not supported."
try:
return self._perform_translation(model_type, input_text.strip())
except Exception as e:
logger.error(f"Translation error with {model_type}: {str(e)}")
return f"Translation failed: {str(e)}"
def _perform_translation(self, model_type: str, text: str) -> str:
"""Perform the actual translation based on model type.
Args:
model_type: Type of model to use.
text: Text to translate.
Returns:
Translated text.
"""
model, tokenizer = self.model_manager.get_model(model_type)
if model_type == "rbmt":
return Translator.translate_rbmt(text)
elif model_type == "smt":
return Translator.translate_smt(text, model)
elif model_type == "mbart50":
return Translator.translate_mbart50(text, model, tokenizer)
elif model_type == "mt5":
return Translator.translate_mt5(text, model, tokenizer)
else:
raise ValueError(f"Unknown model type: {model_type}")
# =============================================================================
# UI STYLING
# =============================================================================
def get_custom_css() -> str:
"""Return custom CSS styles for the application."""
return """
/* Root variables for consistent theming */
:root {
--primary-color: #2563eb;
--primary-hover: #1d4ed8;
--secondary-color: #64748b;
--success-color: #10b981;
--error-color: #ef4444;
--warning-color: #f59e0b;
--background-primary: #ffffff;
--background-secondary: #f8fafc;
--background-tertiary: #f1f5f9;
--text-primary: #1e293b;
--text-secondary: #64748b;
--border-color: #e2e8f0;
--border-radius: 12px;
--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
--transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
/* Global styles */
* {
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
line-height: 1.6;
color: var(--text-primary);
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
min-height: 100vh;
}
/* Main container */
.gradio-container {
max-width: 1200px;
margin: 0 auto;
padding: 2rem;
}
/* Header styling */
.header {
text-align: center;
margin-bottom: 3rem;
padding: 2rem;
background: var(--background-primary);
border-radius: var(--border-radius);
box-shadow: var(--shadow-lg);
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.2);
}
.header h1 {
font-size: 2.5rem;
font-weight: 700;
color: var(--primary-color);
margin-bottom: 0.5rem;
text-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
position: relative;
z-index: 1;
}
/* Enhanced gradient text effect for supported browsers */
@supports (-webkit-background-clip: text) {
.header h1 {
background: linear-gradient(135deg, var(--primary-color), #7c3aed, #ec4899, var(--primary-color));
background-size: 200% 200%;
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
animation: gradientShift 4s ease-in-out infinite;
}
}
@keyframes gradientShift {
0%, 100% { background-position: 0% 50%; }
50% { background-position: 100% 50%; }
}
.header p {
color: var(--text-secondary);
font-size: 1.1rem;
margin: 0;
}
/* Main content container */
.main-container {
background: var(--background-primary);
border-radius: var(--border-radius);
padding: 2.5rem;
box-shadow: var(--shadow-lg);
backdrop-filter: blur(10px);
border: 1px solid rgba(255, 255, 255, 0.2);
transition: var(--transition);
}
.main-container:hover {
box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}
/* Model selection styling */
.model-section {
margin-bottom: 2rem;
}
.gr-dropdown {
border-radius: var(--border-radius) !important;
border: 2px solid var(--border-color) !important;
transition: var(--transition) !important;
background: var(--background-primary) !important;
}
.gr-dropdown:focus-within {
border-color: var(--primary-color) !important;
box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1) !important;
}
/* Input/Output sections */
.io-section {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 2rem;
margin-bottom: 2rem;
}
@media (max-width: 768px) {
.io-section {
grid-template-columns: 1fr;
gap: 1.5rem;
}
}
.input-section, .output-section {
background: var(--background-secondary);
padding: 1.5rem;
border-radius: var(--border-radius);
border: 1px solid var(--border-color);
transition: var(--transition);
}
.input-section:hover, .output-section:hover {
border-color: var(--primary-color);
box-shadow: var(--shadow-md);
}
.section-title {
font-weight: 600;
color: var(--text-primary);
margin-bottom: 1rem;
display: flex;
align-items: center;
gap: 0.5rem;
}
.section-title::before {
content: "";
width: 4px;
height: 20px;
background: var(--primary-color);
border-radius: 2px;
}
/* Textbox styling */
.gr-textbox {
border-radius: var(--border-radius) !important;
border: 2px solid var(--border-color) !important;
transition: var(--transition) !important;
background: var(--background-primary) !important;
font-size: 1rem !important;
line-height: 1.5 !important;
}
.gr-textbox:focus {
border-color: var(--primary-color) !important;
box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1) !important;
outline: none !important;
}
.gr-textbox textarea {
resize: vertical !important;
min-height: 120px !important;
}
/* Button styling */
.translate-button {
background: linear-gradient(135deg, var(--primary-color), #7c3aed) !important;
color: white !important;
border: none !important;
border-radius: var(--border-radius) !important;
padding: 1rem 2rem !important;
font-size: 1.1rem !important;
font-weight: 600 !important;
cursor: pointer !important;
transition: var(--transition) !important;
box-shadow: var(--shadow-md) !important;
text-transform: uppercase !important;
letter-spacing: 0.5px !important;
position: relative !important;
overflow: hidden !important;
}
.translate-button:hover {
transform: translateY(-2px) !important;
box-shadow: var(--shadow-lg) !important;
}
.translate-button:active {
transform: translateY(0) !important;
}
.translate-button::before {
content: "";
position: absolute;
top: 0;
left: -100%;
width: 100%;
height: 100%;
background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
transition: left 0.5s;
}
.translate-button:hover::before {
left: 100%;
}
/* Clear button styling */
.gr-button[variant="secondary"] {
background: var(--background-secondary) !important;
color: var(--text-secondary) !important;
border: 2px solid var(--border-color) !important;
border-radius: var(--border-radius) !important;
transition: var(--transition) !important;
font-weight: 500 !important;
}
.gr-button[variant="secondary"]:hover {
background: var(--error-color) !important;
color: white !important;
border-color: var(--error-color) !important;
transform: translateY(-1px) !important;
box-shadow: var(--shadow-md) !important;
}
/* Examples section */
.examples-section {
margin: 2rem 0;
padding: 1.5rem;
background: var(--background-secondary);
border-radius: var(--border-radius);
border: 1px solid var(--border-color);
}
.examples-title {
font-weight: 600;
color: var(--text-primary);
margin-bottom: 1rem;
display: flex;
align-items: center;
gap: 0.5rem;
font-size: 1.1rem;
}
.examples-title::before {
content: "💡";
font-size: 1.2rem;
}
/* Style for example buttons */
.gr-examples .gr-button {
background: var(--background-primary) !important;
border: 1px solid var(--border-color) !important;
border-radius: 8px !important;
padding: 0.5rem 1rem !important;
margin: 0.25rem !important;
font-size: 0.9rem !important;
color: var(--text-primary) !important;
transition: var(--transition) !important;
text-align: left !important;
max-width: none !important;
white-space: normal !important;
word-wrap: break-word !important;
}
.gr-examples .gr-button:hover {
background: var(--primary-color) !important;
color: white !important;
border-color: var(--primary-color) !important;
transform: translateY(-1px) !important;
box-shadow: var(--shadow-sm) !important;
}
.gr-examples .gr-button:active {
transform: translateY(0) !important;
}
/* Model info cards */
.model-info {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 1rem;
margin-top: 2rem;
padding-top: 2rem;
border-top: 1px solid var(--border-color);
}
.model-card {
background: var(--background-secondary);
padding: 1rem;
border-radius: var(--border-radius);
border: 1px solid var(--border-color);
transition: var(--transition);
text-align: center;
}
.model-card:hover {
border-color: var(--primary-color);
transform: translateY(-2px);
box-shadow: var(--shadow-md);
}
.model-card h3 {
color: var(--primary-color);
margin-bottom: 0.5rem;
font-size: 1.1rem;
}
.model-card p {
color: var(--text-secondary);
font-size: 0.9rem;
margin: 0;
}
/* Responsive design */
@media (max-width: 1024px) {
.gradio-container {
padding: 1rem;
}
.main-container {
padding: 1.5rem;
}
.header h1 {
font-size: 2rem;
}
}
@media (max-width: 640px) {
.header {
padding: 1.5rem;
margin-bottom: 2rem;
}
.header h1 {
font-size: 1.8rem;
}
.main-container {
padding: 1rem;
}
.translate-button {
width: 100% !important;
padding: 0.875rem 1.5rem !important;
}
}
/* Accessibility improvements */
.sr-only {
position: absolute;
width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0, 0, 0, 0);
white-space: nowrap;
border: 0;
}
/* Focus styles for accessibility */
*:focus {
outline: 2px solid var(--primary-color);
outline-offset: 2px;
}
/* Custom scrollbar */
::-webkit-scrollbar {
width: 8px;
}
::-webkit-scrollbar-track {
background: var(--background-secondary);
}
::-webkit-scrollbar-thumb {
background: var(--primary-color);
border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
background: var(--primary-hover);
}
"""
# =============================================================================
# UI COMPONENTS
# =============================================================================
def create_header() -> gr.HTML:
"""Create the application header."""
return gr.HTML(f"""
<h1>🌐 {APP_TITLE}</h1>
<p>{APP_DESCRIPTION}</p>
""")
def create_model_info_cards() -> gr.HTML:
"""Create model information cards."""
cards_html = '<div class="model-info">'
for display_name, model_key in MODEL_CHOICES:
model_name = display_name.split(" ")[0] # Extract short name
description = MODEL_DESCRIPTIONS[model_key]
cards_html += f"""
<div class="model-card">
<h3>{model_name}</h3>
<p>{description}</p>
</div>
"""
cards_html += '</div>'
return gr.HTML(cards_html)
def create_examples_section() -> gr.Examples:
"""Create examples section with sample questions."""
return gr.Examples(
examples=[[example] for example in EXAMPLE_QUESTIONS],
inputs=None, # Will be set when creating the interface
label="💡 Try these example sentences:",
examples_per_page=5
)
# =============================================================================
# APPLICATION SETUP
# =============================================================================
def create_gradio_interface() -> gr.Blocks:
"""Create and configure the Gradio interface."""
# Initialize services
model_manager = ModelManager()
translation_service = TranslationService(model_manager)
# Initialize models
model_manager.initialize_models()
# Create Gradio interface
with gr.Blocks(
theme="soft",
title=APP_TITLE,
css=get_custom_css()
) as demo:
# Header section
with gr.Column(elem_classes=["header"]):
create_header()
# Main content
with gr.Column(elem_classes=["main-container"]):
# Model selection
with gr.Row(elem_classes=["model-section"]):
model_choice = gr.Dropdown(
choices=MODEL_CHOICES,
label="🤖 Select Translation Model",
value=DEFAULT_MODEL,
elem_classes=["gr-dropdown"],
info="Choose the translation approach that best fits your needs"
)
# Input/Output section
with gr.Row(elem_classes=["io-section"]):
with gr.Column(elem_classes=["input-section"]):
gr.HTML('<div class="section-title">📝 Input Text (English)</div>')
input_text = gr.Textbox(
placeholder="Enter your English text here or click on an example below...",
lines=6,
max_lines=10,
elem_classes=["gr-textbox"],
show_label=False,
container=False
)
with gr.Column(elem_classes=["output-section"]):
gr.HTML('<div class="section-title">🇻🇳 Translation (Vietnamese)</div>')
output_text = gr.Textbox(
placeholder="Translation will appear here...",
lines=6,
max_lines=10,
elem_classes=["gr-textbox"],
interactive=False,
show_label=False,
container=False
)
# Examples section
with gr.Row(elem_classes=["examples-section"]):
examples = gr.Examples(
examples=[[example] for example in EXAMPLE_QUESTIONS],
inputs=[input_text],
label="💡 Try these example sentences:",
examples_per_page=5,
run_on_click=False
)
# Action buttons
with gr.Row():
translate_button = gr.Button(
"🚀 Translate Text",
elem_classes=["translate-button"],
variant="primary",
size="lg",
scale=3
)
clear_button = gr.Button(
"🗑️ Clear",
variant="secondary",
size="lg",
scale=1
)
# Model information cards
create_model_info_cards()
# Bind the translation function to the button
translate_button.click(
fn=translation_service.translate,
inputs=[model_choice, input_text],
outputs=output_text,
show_progress=True
)
# Clear button functionality
clear_button.click(
fn=lambda: ("", ""),
inputs=[],
outputs=[input_text, output_text]
)
# Also allow Enter key to trigger translation
input_text.submit(
fn=translation_service.translate,
inputs=[model_choice, input_text],
outputs=output_text,
show_progress=True
)
return demo
# =============================================================================
# MAIN EXECUTION
# =============================================================================
def main():
"""Main function to run the application."""
try:
demo = create_gradio_interface()
demo.launch(
server_name="0.0.0.0",
server_port=7860,
share=False,
show_error=True
)
except Exception as e:
logger.error(f"Failed to launch application: {str(e)}")
raise
if __name__ == "__main__":
main() |