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More details: What type of data format is the PSG (Polysomnography) data in? EDF (European Data Format) What information should successful freelancers include in their application? Past work Which sleep stages need to be scored in the staging process? All stages (Wake, REM, NREM)
Project ID: 40706673
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Active 5 days ago
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12 freelancers are bidding on average $20 USD/hour for this job

Hello, I can help develop a reliable workflow for sleep staging from EDF Polysomnography recordings, covering Wake, REM, and all NREM stages. The approach can include signal validation, epoch segmentation, artifact handling, feature extraction, and an Artificial Intelligence model trained or evaluated against expert annotations. Data Analysis will be used to assess channel quality, class balance, staging consistency, and clinically meaningful performance across each sleep stage. I can also review your existing EDF samples and past scoring methodology, then recommend whether a classical feature-based model, deep learning architecture, or hybrid pipeline is most appropriate. Deliverables can include reproducible preprocessing, model evaluation, confusion matrices, per-stage sensitivity/specificity, and clear documentation for future recordings. My relevant past work and technical approach can be shared based on your preferred validation requirements. Could you clarify whether expert-scored hypnograms are available for training and validation, and which PSG channels should the staging model prioritize? Best regards, Muhammad Awais
$25 USD in 21 days
6.7
6.7

Hi there, We can review the EDF PSG files and define a clear staging workflow for Wake, REM, and NREM, including how we would handle channel structure, annotations, and any artifact-related decisions before scoring begins. Our output will be a practical staging specification and file handling approach suited to the data format you shared. One point to confirm is whether you need a new staging pass or a QA review of existing labels. Best Regards, 8veer
$30 USD in 10 days
5.1
5.1

Hello, I trust you're doing well. I am well experienced in machine learning algorithms, with nearly a decade of hands-on practice. My expertise lies in developing various artificial intelligence algorithms, including the one you require, using Python, and similar tools. I have worked with pytorch, and tensorflow to develop DL models, .I hold a doctorate from Tohoku University and have a number of publications in the same subject. My portfolio, which showcases my past work, is available for your review. Your project piqued my interest, and I would be delighted to be part of it. Let's connect to discuss in detail. Warm regards. please check my portfolio link: https://www.freelancer.com/u/sajjadtaghvaeifr
$25 USD in 40 days
3.5
3.5

Hey! We are a team of 62 professionals specializing in Python, signal processing, and machine learning with 9+ years working with biomedical datasets and automated analysis workflows. Here’s how we can help: * Process EDF polysomnography recordings using Python * Score Wake, N1, N2, N3, and REM stages * Build automated staging and validation workflows * Provide clear outputs, documentation, and reproducible processing Could you share whether you already have labeled EDF recordings for training and validation?
$20 USD in 40 days
3.0
3.0

Hello, I am a Sleep Data Analysis Developer with over 10 years of experience in the Python and MNE-Python field. I can help score your EDF Polysomnography recordings across Wake, REM, and all NREM stages. I will inspect the signal channels, confirm sampling rates and annotations, then create a clear staging workflow using standard sleep-scoring epochs. The process can include signal cleaning, artifact handling, feature extraction, and transparent Data Analysis so each scored epoch is easy to review. I will also structure the output for reliable validation and comparison with existing expert annotations when available. My focus is accurate, reproducible results and practical documentation, not a black-box result. I understand that your application should include relevant past work, and I can provide examples of PSG processing and sleep-stage analysis. Thank you for reading my proposal to the end, and I sincerely hope to work on this project with you, Best, Stanislav
$20 USD in 30 days
0.0
0.0

As a Virtual Assistant, I'm well-versed in data analysis and management, making me an ideal candidate for your remote sleep scoring project. Although my primary expertise may be in administrative support and project coordination, my comfort with tools like MS Office and my adaptability to different industries will facilitate the seamless navigation through PSG data format, EDF. High levels of concentration is needed for successful sleep staging across all stages, and this is a forte I have mastered during my 5 years of experience supporting entrepreneurs with their crucial decision-making process. In terms of data handling, my skillset extends beyond mere organization. I can efficiently convert raw data into actionable insights, ensuring that your PSG data is properly analyzed and segmented into Wake, REM, NREM stages. Additionally, I am proficient at using CRM platforms and not only familiar with but comfortable using Google Workspace and Zoom - essential tools for any form of collaboration or communication. In choosing me for this project, you gain a professional who values your project's confidentiality as well as timely communication to keep you constantly updated on progress made. My proactive nature will also ensure that potential challenges are anticipated and addressed before they become issues.
$15 USD in 40 days
0.0
0.0

Hello, System understanding: The task involves ingesting Polysomnography (PSG) recordings in EDF format, extracting EEG, EOG, and EMG channels, and applying sleep‑stage scoring to label each 30‑second epoch as Wake, REM, or NREM (N1‑N3). The output should be a staged file (e.g., CSV or JSON) that maps epochs to sleep stages for downstream analysis. Technical approach: Use Python with MNE‑PyEdflib to read EDF, resample signals to standard rates, compute band‑power features (delta, theta, alpha, sigma, beta) and EMG amplitude, then apply AASM‑compatible heuristics or a lightweight classifier (e.g., Random Forest) to produce stage labels. The service can be exposed as a simple REST endpoint or delivered as a standalone script. Core modules: 1) EDF ingestion & channel selection; 2) Signal preprocessing (filtering, detrending, epoching); 3) Feature extraction (spectral power, amplitude, variability); 4) Sleep‑stage algorithm (rule‑based or ML); 5) Result formatting & quality report; 6) Optional validation against annotated references. Relevant systems: AIDocLink (iStart Rajasthan) - AI‑enabled doctor support platform that processes medical documents and extracts clinical information; demonstrates our ability to build reliable healthcare‑focused AI pipelines handling sensitive biosignal data. Implementation strategy: Begin with exploratory analysis of a sample EDF to confirm channel layout, prototype feature extraction, implement a rule‑based scorer, validate with any available annotated epochs, refine thresholds, then package the solution with clear usage instructions and deliver the scoring script/report. Questions: 1. Which scoring guideline should we follow (AASM 2012, AASM 2017, or Rechtschaffen & Kales)? 2. Do you provide annotated PSG EDF files for validation or training? 3. What is the preferred output format (CSV, JSON, EDF annotations) and any required integration method (API call, file drop, etc.)? Regards, Rohit
$15 USD in 3 days
0.0
0.0

Hi I have strong experience working with physiological signal data, EDF files, PSG workflows, and structured sleep-stage analysis. I understand the requirements for scoring Wake, REM, and NREM stages consistently from overnight recordings while maintaining accurate epoch-by-epoch annotations and clear quality control. I can review the EDF channels, verify signal integrity, perform sleep staging using established AASM-based criteria, and deliver clean scored outputs in your required format. I will also document ambiguous or poor-quality segments, apply consistency checks across the recording, and can provide relevant past-work details privately. Best regards, Steve.
$20 USD in 40 days
0.0
0.0

Hello, I’m interested in assisting with this PSG data annotation project. My background includes research, data analysis, structured data handling, and working carefully with detailed datasets. I understand that the PSG data is provided in EDF format and that the staging process involves identifying Wake, REM, and NREM stages. I am comfortable following detailed annotation guidelines, maintaining consistency, and reviewing data carefully to minimize annotation errors. While my previous professional experience has not specifically focused on sleep staging, I am a fast learner and can follow your scoring protocol and training materials precisely. I would be happy to complete any qualification or sample annotation required before starting the full project. I’m detail-oriented, reliable, and available to start promptly. Best regards, Noraida
$20 USD in 30 days
0.0
0.0

Hi, Iam Tamilselvan, I have 4 years experience in Data Annotation field. Doing projects are 2d semantic segmentation and 3d bounding box with quality and quantity. And I'm ready to immediate work. Thank you
$15 USD in 40 days
0.0
0.0

Israel
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