Statistics – Methodology
Scientific paper
2008-12-08
Statistics
Methodology
7 pages
Scientific paper
Missing and incomplete information in surveys or databases can be imputed using different statistical and soft-computing techniques. This paper comprehensively compares auto-associative neural networks (NN), neuro-fuzzy (NF) systems and the hybrid combinations the above methods with hot-deck imputation. The tests are conducted on an eight category antenatal survey and also under principal component analysis (PCA) conditions. The neural network outperforms the neuro-fuzzy system for all tests by an average of 5.8%, while the hybrid method is on average 15.9% more accurate yet 50% less computationally efficient than the NN or NF systems acting alone. The global impact assessment of the imputed data is performed by several statistical tests. It is found that although the imputed accuracy is high, the global effect of the imputed data causes the PCA inter-relationships between the dataset to become altered. The standard deviation of the imputed dataset is on average 36.7% lower than the actual dataset which may cause an incorrect interpretation of the results.
Blend Darren
Marwala** Tshilidzi
No associations
LandOfFree
Comparison of Data Imputation Techniques and their Impact does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Comparison of Data Imputation Techniques and their Impact, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparison of Data Imputation Techniques and their Impact will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-319459