Christopher C.

Key Skills

Software

Other

Top Subject Matter

E comerce and retail- PRoduct Attribute Annotation

Finance $ Banking- Transaction Data Vaidation

Healthcare- Medical Records Standardization

Top Data Types

Text

Top Task Types

Entity (NER) Classification

Classification

Freelancer Overview

I have over 4 years of experience indata labelling and ai training data specifically working with excel based annoatation fro model reaadiness. At Datamatrix solutions i annoatated and validated 10,000+ rows weekly woth 99.5% accuracy usng VLOOKKUP XLOOKUP and INDE MATCH to structure large datasets for AI training. I also built pivot tables and conditions formatting rules to catch discrepancies lowering error rates by 25% in three months

Labeling Experience

RETAIL PRODUCT ANNOATATIOIN FOR E COMMERCE AI TRAINING

TextEntity (NER) Classification

For Datamatrix solutions I Annotated product titles descriptions ans apec sheets to aatributes like brand size color materials and SKu codes. Processed 10,000+ rows weekly across 50+ retail clients.Used nested formulas plus text functions to standardize messy entries. Archived 99.5% inter rater reliabilty by following strcit annoatation guidlines. Flagged edge cases to QA leads resolving 200+ dicrepancies per month. Dataset size exceede 500,00 total records. Qulaty measures included daily spot checks and weekly error audits which reduced defects rates by 25%

2023 - Present

Education

Work History