Openerp python frameworkJobb
Hello, I have experience in Python, web scraping, and data extraction using tools like Scrapy, Pandas, and Selenium. I can quickly debug your script and ensure it meets all your requirements. Here’s how I plan to help you: 1. Fix bugs in your script within 2-3 hours. 2. Add functionality to match conditions and extract data as per your requirements. 3. Provide an easy-to-use script for future use. I will deliver the output in the required Excel format. Looking forward to your response so we can start immediately! Budget: $8 (as per your project description). Timeframe: First phase within 2-3 hours. Thank you,
I'm looking for a Python script, or a similar tool, that can, FOR EXAMPLE, take a photo from a source like Airbnb and transform it into a unique piece of content. The goal is to ensure that the altered photo cannot be found using Google Image or any other image search engine. IMPORTANT: The photo must remain the same, visualy. Maybe with a few small changes Key Features: - The script should incorporate multiple methods of alteration, including changing pixels, adding noise, and modifying the canvas size. - The new canvas size should either be the same as the original or larger. - The tool should have the capability to perform a variety of pixel changes, such as color adjustments, blurring, and random pixel shifts. Ideal Skills: - Proficiency in Python or equivalent p...
I'm seeking a fresh Python backend developer with a focus on API development, specifically RESTful APIs. The primary task will be implementing user authentication within these APIs. Ideal Skills: - Proficiency in Python - Basic understanding of RESTful APIs - Experience with implementing user authentication This is a perfect opportunity for a recent graduate or someone looking to gain practical experience in the field. I am open to mentoring and guiding the right candidate.
...user experience and operational efficiency. Design Inspiration The app's UI design should be vibrant and engaging, drawing from the colorful geometric patterns provided. This design will be used consistently across the app to maintain visual appeal and brand identity. 1. Customer-Facing Features (Front-End) 1.1 Quoting System Dynamic Pricing Engine: Develop a backend service using Node.js or Python to calculate quotes based on distance, item size, season, and service type, with real-time pricing displayed through a React or Vue.js front-end. Add-Ons: Incorporate a modal or accordion to select additional services like stairs or disassembly. Cost Transparency: Implement a pricing table component in the UI to show a detailed cost breakdown. 1.2 Live Booking System Real-Time A...
...seeking a talented eLearning trainer to help build high-quality tech-related courses for my YouTube channel. You will be provided with a company logo and instructions, and your task will be to create engaging videos for each topic in selected technologies. Technologies to cover: - React JS - Javascript Object Oriented - Data Science and Machine Learning - Next JS - Design - Photoshop - .Net Core - Python - DevOps Requirements: - Create high-quality videos with excellent sound - Use a clear, globally understandable accent - No face showing required Payment: Maximum of 1000 INR per video Ideal Skills and Experience: - Previous experience in eLearning course creation - Proficiency in the mentioned technologies - High-quality video production skills - Clear and understandable acc...
Beschreibung: Ich suche einen Video-Editor oder Moti...professionellen Trading-Charts mit Entry-, Stop-Loss- und Take-Profit-Zonen. 2. Ein moderner, sauberer Stil mit Farben wie Blau, Gelb und Weiß. 3. Einzigartige Designs oder Neugestaltung basierend auf TikTok-Beispielen (Referenzen werden bereitgestellt). 4. Einhaltung von Urheberrechten. Fragen: 1. Was ist der Preis pro Video? 2. Wie sind die Preise für 5, 10 und 30 Videos? 3. Können Sie ein Framework liefern, das später für andere Sprachen angepasst werden kann? Lieferzeit: • 1 Video: 2–3 Tage. • 30 Videos: Bitte schätzen Sie die Zeit ein. Portfolio: Bitte teilen Sie Beispiele für Trading-Videos oder Animationen. Vorlagen oder wiederverwendbare Designs sind willkomm...
...automatically connect to their assigned proxies before performing actions. • Implement randomized yet controlled actions to avoid detectable patterns. 3 Movement Package Integration: • Assign each device a unique movement package (a set of AI-driven behavior models) tailored to its usage. • Define touch patterns, speed of interaction, and app navigation behavior for each device. 4. Security Framework Bypass: • Analyze and restrict access to security frameworks (e.g., Samsung Knox) by using tampered firmware. • Remove tamper flags on rooted devices to bypass basic security protections. 5. Cryptographic Environment Emulation: • Preload generic cryptographic responses for Secure Enclave validation to avoid app crashes. • Use proxy servers...
I’m working on an Angular/.NET application with a functional small attachment tab UI and several working APIs. However, I’m facing issues with two APIs: 1. Insert API: Data is not being inserted into the database. 2. Fetch API: Unable to retrieve data properly. Technologies used: - Frontend: Angular - Backend: .NET Core, .net framework - Database: [SQL Server/MySQL, MongoDB.] Deliverables: - Fix the insert and fetch API issues. - Ensure proper testing for functionality.
I'm seeking a backend engineer skilled in Python, and data preparation activity for ML. Key Responsibilities: - Collaborate in the design and development of a robust, efficient, and secure RESTful API. - Implement best practices in API development for scalability and maintainability. Ideal Skills: - Proficient in Pytho - Proven track record in RESTful API development. - Strong understanding of backend engineering principles. - Excellent problem-solving and communication skills.
...Fully functional software that integrates all specified features. 2. Detailed installation and setup guide, including dependencies and configuration instructions. 3. Basic user manual for operation and troubleshooting. 4. Source code with comments for future modifications. Preferred Skills and Experience: • Experience with Raspberry Pi development (especially Raspberry Pi 5). • Proficiency in Python, OpenCV, and AI/ML frameworks (e.g., TensorFlow, PyTorch). • Familiarity with video editing libraries like FFmpeg or OpenCProject Brief for Software Engineer • Expertise in real-time image and video processing. • Knowledge of integrating sensors (motion detection, pressure mats) with Raspberry Pi GPIO. Timeline: • Initial prototype: 2 weeks &bul...
I'm seeking a frontend developer to create a modern and minimalist design for my SaaS application using Vue.js. Key Requirements: - Design and implement the complete frontend based on a modern and minimalist aesthetic. - Collaborate with me to refine and finalize design elements. - Utilize Vue.js framework for development. Ideal Skills: - Proficiency in Vue.js. - Strong UI/UX design skills, particularly in modern minimalist design. - Experience in frontend development for SaaS applications. - Excellent communication skills for design collaboration.
I'm in need of a Python developer to improve my Whisper script. The project involves: - Upgrading the current script to include better UI elements using PyQt - Implementing some new file processing functions The UI should be compatible with a desktop application. Ideal skills for this project include: - Proficiency in Python, with a focus on desktop application development - Extensive experience with PyQt - Strong skills in file processing programming - Previous experience enhancing scripts for improved functionality and user interface Please provide examples of similar projects you've completed in your bid.
I am seeking an experienced DevOps and QA professional who can implement a robust CI/CD pipeline and comprehensive QA testing for my GitHub repository. This repository contains code written in JavaScript, Python, and Java. Key Responsibilities: - Set up a seamless CI/CD pipeline utilizing GitHub Actions or similar tools. - Develop and implement unit tests, integration tests, and end-to-end tests. - Ensure the code is thoroughly tested and ready for deployment. Ideal Skills: - Proficient in JavaScript, Python, and Java. - Extensive experience with GitHub and CI/CD tools. - Strong understanding of different testing methodologies. - Previous experience with setting up CI/CD and QA for multi-language repositories will be highly regarded.
Host My already API based Python website you have to rehost on vps server like hostinger
I'm looking for a skilled Python developer to create a simple web automation script for me.
I'm in need of a Python backend developer, preferably a fresher, with a focus on API development and database management. The project will primarily involve working with SQL databases and leveraging the Django framework. Key Responsibilities: - API Development: Building, testing, and maintaining APIs to support various applications and services. - Database Management: Overseeing the interaction with our SQL databases, ensuring data integrity and optimizing performance. Ideal Skills: - Proficiency in Python, particularly in a backend context. - Familiarity with SQL databases, including basic query writing and database design. - Prior experience or knowledge of the Django framework. - Understanding of API structures and principles. This is a great opportun...
I need an expert in Python and server management to rehost my existing API-based Python website on a VPS server. Key Responsibilities: - Rehost the website on a Linux-based VPS server - Ensure all APIs are functioning correctly post-migration - Optimize server settings for best performance Ideal Skills: - Strong Python programming skills - Extensive experience with VPS server management - Familiarity with API-based applications - Problem-solving skills to troubleshoot any issues that arise during rehosting Please note, the details about the VPS server and the code repository have not been finalized yet. Flexibility and readiness to assist with these aspects would be advantageous.
...utm_medium=share Job Posting: YouTube Caption Extraction Bot Developer Position Overview: Looking for a Python developer to create a YouTube channel caption extraction bot with specific requirements for handling large-scale video processing. Project Requirements: Create a bot that processes YouTube channel video pages (e.g., @TheCookingFoodie/videos) Core Functionalities: Process all videos from a channel's video page Extract and save: Video titles Video URLs Closed captions (CC) Save data in text files named after each video Process videos chronologically (oldest to newest) Handle 1000-2000 videos per channel Technical Specifications: Language: Python Implementation using Python requests or YouTube-specific libraries Error Handling Requirements: Handle video...
I'm looking for an expert to help improve my site's Google PageSpeed Score, especially the Core Web Vitals. My website is built on a React framework and Gatsby. I have not implemented any optimizations yet, so this project will be starting from scratch. Ideal skills and experience for the job include: - Proven track record of optimizing Core Web Vitals - Familiarity with React and Gatsby - Demonstrable ability to achieve PageSpeed scores of 90 and above on both mobile and desktop.
I need a skilled Python developer to create a web scraper for me. The scraper should be able to extract structured data, like tables, from various e-commerce websites. The project requires a deep understanding of web scraping techniques and best practices in Python.
I'm looking for a Python-based email validation checker that can efficiently check millions of email addresses against the Kucoin sign-up page. This tool needs to: - Utilize proxies: It should be able to run with proxies and handle the load of millions of checks with a budget of $200 worth of proxies. - Store results: The checker should store the results of the email validation in a file. The output format for the results file should be TXT. Ideal candidates for this project would be those with extensive experience in Python, web scraping, and proxy handling. A deep understanding of email validation and experience working with cryptocurrency exchange websites would be a significant plus.
Vänligen Vänligen Registrera dig eller Logga in för att se mer information.
...developer with a strong background in Solana and Raydium development to assist with a specific project. I have Python code that interacts with Uniswap (Ethereum) for minting and managing LP positions, swaps, and more. I’m looking to replicate this functionality for Raydium on Solana. Key Requirements: - Proven experience integrating systems with Solana using Python. - In-depth knowledge of Raydium, including crypto token minting and liquidity provision processes. - Strong understanding of transaction speed optimization and security best practices within the Solana ecosystem. Project Scope: - Develop a Python function to mint an LP position on Raydium. I will provide existing Python code for Uniswap as a reference. - Document the key distinctions betwe...
...scripting and real-time control adjustments. Required Expertise: 1. ROV Control Systems: • Proficiency in developing control algorithms for stabilization (pitch, yaw, roll). • Experience with PID tuning for underwater robotics. 2. ArduSub Firmware Development: • Strong understanding of ArduSub, MAVLink, and Blue Robotics hardware. 3. Programming and Algorithm Design: • Proficiency in Python and C++ for control systems and dynamic parameter adjustments. 4. Simulation and Testing: • Experience with underwater robotics simulators (e.g., Gazebo or SITL) for testing and validation. 5. Hardware Integration: • Familiarity with joystick controllers and peripheral integration using Raspberry Pi. What We Provide: • Detailed R...
I'm looking for an expert in Natural Language Processing to help me build and train a T5 language model on a dataset of text documents. Key Requirements: - Expertise in building and training T5 models. - Proficiency in handling and processing text documents for model training. - Strong understanding of Natural Language Processing techniques and methodologies. Skills: - Python - Tensorflow/PyTorch - NLP techniques - Data preprocessing Ideal for those with experience in similar projects. No immediate deadline, but I would appreciate timely updates and progress reports.
I need a skilled Flutter developer to implement a Material 3 UI from a Figma design into a Flutter framework. The design consists of over 11 screens and is intended for an e-commerce app. The ideal freelancer for this project should: - Have extensive experience with Flutter and Figma - Be able to translate complex designs into functional UIs - Understand the requirements for e-commerce app development Your expertise in creating interactive and user-friendly UIs will be key to the success of this project. Your ability to deliver high-quality work within the agreed timeline will be greatly appreciated. Figma:
...through setup and usage. 3. Enhanced e-learning integration with existing LMS platforms. 4. Customizable dashboards with advanced analytics for all user roles. 5. Integration with biometric systems for attendance tracking. 6. Multi-school administration with consolidated reporting. ________________________________________ Technology Stack: Frontend: 1. React.js Backend: 1. NestJS (Node.js Framework) 2. Python (for AI/ML modules) Database: 1. PostgreSQL Hosting: 1. AWS (Amazon Web Services) Payment Gateways: 1. Paypal SMS Gateway: 1. Twilio ________________________________________ Development Roadmap: Phase 1: MVP Development: 1. Define system architecture and database normalization. 2. Develop core features: user management, role-based access, and student/staff management....
...automate this process using Python scripts. The goal is to centralize the data for better analysis and set up a structure in BigQuery that is organized and scalable for future use. I will provide access to BigQuery so the freelancer can set up datasets and organize the data directly within the platform. Scope of Work: Data Extraction and Transformation: - Extract data from SQL tables (e.g., inventory, item details, sales history) based on specific fields and filters - Ensure data is cleaned and formatted for smooth loading into BigQuery. BigQuery Setup and Organization: - Access BigQuery to set up and structure datasets (e.g., inventory_data, sales_data, item_details). -Ensure the datasets are organized and optimized for analytics. Python Automation: Develop Python...
I need help computing the realized covariance matrix based on daily returns of exchange rates following the same methodology as in a paper (Pricing currency risks, Journal of Finance). I already have a code which does the computation but somehow I don't get the same values (but I get the same shape) [see details in the attached .ipynb file]. I provide all the data needed. Just need someone...already have a code which does the computation but somehow I don't get the same values (but I get the same shape) [see details in the attached .ipynb file]. I provide all the data needed. Just need someone to go over my code and try to get the correct Covariance Matrices. Ideal Skills: - Proficient in statistical analysis - Experienced with time series data - Familiar with finance and econo...
...professionals with varied availability. As a developer, you will contribute to building and maintaining robust, scalable, and high-performing web and desktop applications using the latest .NET technologies. Responsibilities: Back-End Development: Develop and maintain server-side components using C# and ASP.NET Core. Design APIs (RESTful or gRPC) for seamless front-end integration. Work with Entity Framework and databases such as SQL Server or SQLite for efficient data management. Ensure secure and scalable solutions through best practices in cryptography and system architecture. Front-End Development: Create intuitive, responsive, and dynamic user interfaces using React, Angular, or Blazor. Implement modern web standards using HTML5, CSS3, and JavaScript/TypeScript. Optimize fr...
The bot will simply execute trades based on alerts from TradingView. The trades will need to be executed on the Jupiter crypto trading platform Key Requirements: - The bot should be able to utilize Webhook alerts from TradingView. - Proficiency in Python is essential. - Previous experience with TradingView and developing trading bots will be highly regarded. - Understanding of trade execution and monitoring will be beneficial. Write "TradingView" on the first line of your bid proposal Thank you
I'm in need of a Python developer who can create a script for me. The script should be capable of extracting goals from ChatGPT's output and organizing them into a JSON file. Goals should be categorized by their dates. Key Requirements: - Proficient in Python programming - Experience with data extraction and JSON formatting - Ability to write efficient, clean, and well-documented code The script needs to be able to identify and extract any goal recommendation based on following duration: - Week - Month - Year Please provide examples of similar projects you've completed.
...seekers and employers. Key Features: - Both job seekers and employers should be able to sign up and create personal, undateable portfolios for future job offers. - Employers should primarily have access to view and search these portfolios. - Job seekers should be able to create and update their portfolios at their convenience. Ideal Skills: - Web development (preferably using a responsive framework such as Bootstrap or similar). - Experience in creating interactive, user-friendly interfaces. - Knowledge in implementing secure user sign-up and profile management systems. - Understanding of back-end development for managing and storing portfolio data. The goal is to create a platform where job seekers can showcase their skills and experiences, and employers can easily find pote...
...documentos en el contexto de un sistema RAG. Proponer estrategias para garantizar que las consultas a los documentos devuelvan respuestas completas, no parciales, incluso en documentos extensos y complejos. Habilidades requeridas: 1. Experiencia con la integración de APIs REST (especialmente OpenAI API). 2. Conocimientos de programación en cualquier lenguaje que permita trabajar con APIs REST (ej., Python, Node.js, PHP, etc.). 3. Familiaridad con sistemas RAG (Retrieval-Augmented Generation) y experiencia manejando archivos grandes y textos estructurados (incluyendo tablas). 4. Conocimiento de los parámetros de configuración de la API de OpenAI y cómo afectan a la calidad y precisión de las respuestas. 5. Buenas prácticas en la g...
Expanding on previous data visualization project in Python
Job Description: We are seeking an experienced freelance developer to create a custom bot ...notifications. • Real-Time Data Processing: • Expertise in handling real-time data streams or using webhooks to enable immediate alerts. • Programming Skills: • Proficiency in languages such as Python or Node.js, suitable for building bots and processing data in real-time. • Crypto Knowledge (Preferred): • Familiarity with crypto trends, particularly memecoins, including typical hashtags, terminology, and launch patterns, to enhance detection accuracy. Skills Required: • Social media bot development • X API or web scraping experience • Telegram bot integration • Real-time data processing • Programming (Python, Node.js,...
Senior Software...our team to address specific web development challenges. • Communicate directly with U.S. clients to understand project requirements and provide technical insights. • Offer expert-level guidance on web programming best practices and solutions. Qualifications: • At least 5 years of experience as a Senior Software Engineer. • Expertise in web programming languages and frameworks (e.g., JavaScript, Python, Ruby, or similar). • Fluent English, with strong verbal and written communication skills. • Experience working with U.S. clients or teams is a plus. Compensation: • $30–$50 per hour, depending on experience and skills. How to Apply: If you’re interested, please send a direct message. We’re looking for someone a...
Development of a Cost-Efficient Microservice for Color-Based Apparel Search and Price Compa...sorting (price, relevance) and filtering (brand, size, ratings). Required Skills: Strong experience in backend development and API integrations. Familiarity with scraping technologies and tools (if necessary). Knowledge of color recognition and matching algorithms. Proficiency in working with e-commerce APIs. To keep costs low and the solution scalable, the microservice should utilize: Backend: Python (preferred), Node.js, or PHP. Data Handling: JSON-based processing, with minimal storage requirements. Deployment: Use free or low-cost cloud platforms like Heroku, AWS Free Tier, or Render. API Integration: REST-based architecture for simplicity. Understanding of scalable microservice arch...
I'm seeking experienced backend developers and frontend designers for a project involving a custom application. The project requires: - Backend development in Python - Integration with the PayPal payment system - Designing an intuitive and engaging frontend Experience in working with payment systems and APIs is crucial. The ideal candidate would be someone who can seamlessly blend backend functionality with frontend design, all while ensuring a smooth integration with PayPal.
...to the correct OpenAI assistant based on user selections. Documentation for all updates and changes made during the project. 6. Timeline: Start Date: As soon as possible. Deadline: March 1st, 2025, for alpha testing and promotion readiness. 7. Quote Request: Please provide a detailed quote for completing the tasks outlined in this brief. 8. Tech Stack: Frontend: React: Core frontend framework. TypeScript: For type-safe JavaScript development. Vite: Build tool and development server. Tailwind CSS: Styling and responsive design. Shadcn UI: Pre-built UI components for consistent design. React Router: Client-side routing. React Query: Data fetching, caching, and state management. React Hook Form: Form handling and validation. Backend (Supabase): PostgreSQL: Main d...
Writing HTML and Python Sections for: Business Computer Applications **Description:** I am looking for a professional writer to help draft two specific sections for an academic project. The details are as follows: 1. **HTML and Website Design:** - Discuss the importance of an online presence for businesses and the impact of website design on customer engagement. - Analyze the role of user experience (UX) and accessibility in driving business success. - Provide real-world examples of companies that have leveraged website design to achieve growth. - Use reliable sources and support the content with references in APA format. 2. **Python for Business Analytics:** - Conduct independent research o...
Fix Variable Not Found Error in Migrated Yii Framework Website (PHP 7.0) Project Description: I require assistance fixing a critical issue with a website built using the framework on PHP 7.0. The website was recently migrated from cPanel to DirectAdmin, and since then, we've encountered an error message indicating a variable named $where is not found. Error Details: Error Message: PHP Notice – yiibaseErrorException: Undefined variable: where Code Snippet:: PHP $connection = Yii::$app->getDb(); $command = $connection->createCommand("SELECT id FROM product $where"); $result = $command->queryAll(); Potential Causes: Missing Variable Definition: The $where variable might not be properly defined or assigned a value before it's use...
I'm looking to create a Python-based pricer for equity total return swaps, specifically focusing on single stocks. The primary objective of this pricer is for valuation purposes. Key Requirements: - The pricer should be able to take into account the dividend yield and interest rates as inputs. - It should be able to accurately calculate the value of the swap based on these inputs. - The code should be clean, well-commented and easy to understand. Ideal Skills and Experience: - Proficiency in Python, with a strong background in financial modelling and valuation techniques. - Previous experience in developing financial software or tools. - Understanding of how equity total return swaps work, particularly in relation to single stocks. - Ability to incorporate various fina...
...for platform management and future updates. Deliverables: Fully functional platform, ready for launch. Admin panel for content and user management. Integration of payment gateways and any required APIs. Bug fixes and post-launch support for 1–3 months (negotiable). Tech Stack: I am open to recommendations, but prefer modern technologies like React, Angular, Node.js, Laravel, or any suitable framework that ensures scalability and security. Budget: Please provide a detailed proposal with an estimated cost breakdown. Timeline: I aim to launch the platform within 8–12 weeks of project commencement. Proposal Instructions: Share your portfolio with relevant experience in building e-learning platforms, test prep systems, or similar projects. Provide a high-level plan or...
I'm looking for a proficient Flutter developer who can edit a mobile app for both iOS and Android. Key Requirements: - Expertise in Flutter framework - Extensive experience in cross-platform mobile app development - We bought flutter app code in envato and we need a developer to change some codes in the app and submit the app in Apple store and Google play store
I'm seeking an experienced data engineer with extensive knowledge in Python, AWS S3, Step Function, Docker, Athena, EC2, and PyCharm. Key Responsibilities: - Assist with configurations and debugging on AWS, Docker and PyCharm. - Help optimize code in PyCharm for better performance. - Troubleshoot and resolve issues related to Docker, including configuration and deployment. The ideal freelancer will have a strong background in data engineering and practical experience with the mentioned platforms and tools. Python proficiency is a must, along with the ability to work independently and solve problems efficiently.
I'm looking for a professional Python developer with a good understanding of financial markets and algorithmic trading. The project entails creating a Python script that can execute automated trades on CoinDCX based on signals from a combination of Multi Time Frame (MTF) Relative Strength Index (RSI) and Average Directional Index (ADX). Key functionalities of the script include: - Signal generation: The script should be able to identify trading signals based on the MTF RSI and ADX indicators. - Automated trading execution: Upon the generation of a signal, the script should automatically execute the trade on CoinDCX. - Performance tracking and reporting: The script should monitor the performance of the trades and generate a report for review. The script needs to be comp...
I am seeking an experienced AI/ML developer to create a Python-based predictive analytics model for structured data. The model will be primarily focused on classification tasks, similar to spam detection. Key Tasks: - Full data preprocessing: The data is not prepared for use, and comprehensive preprocessing will be required. - Feature selection - Model training - Performance evaluation using TensorFlow/PyTorch Deliverables: - A trained model - A detailed performance report - API integration Skills Required: - Proficiency in Python - AI/ML expertise - Experience with TensorFlow and PyTorch - Strong data analysis skills The project budget is between $500 to $1,000, with a completion timeline of 3 weeks.
Customer Purchase Behavior Data: This dataset contains information about customers' buying patterns, such as purchase history, items bought, frequency of purchases, etc. It could include: Customer ID Product details (e.g., category, price, quantity) Date of purchase Purchase frequency Customer Reviews or Feedback Data: This dataset contains text-based data, such as reviews, comments, or feedback from customers. It would include: Customer ID Review text or feedback Rating or sentiment label (optional, if pre-labeled)
Customer Purchase Behavior Data: This dataset contains information about customers' buying patterns, such as purchase history, items bought, frequency of purchases, etc. It could include: Customer ID Product details (e.g., category, price, quantity) Date of purchase Purchase frequency Customer Reviews or Feedback Data: This dataset contains text-based data, such as reviews, comments, or feedback from customers. It would include: Customer ID Review text or feedback Rating or sentiment label (optional, if pre-labeled)