My Linear Regression Model Mean Absolute Error(MAE) is 0.29 and R2 0.20 , Is this a acceptable Model ?
How can increase the r2 score ?
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Only you can decide that, is a MAE of 0.29 acceptable to you? – user2974951 May 26 '22 at 06:56
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is this model is good or bad ? – Aadhil Imam May 26 '22 at 07:02
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Impossible to fully answer this question without context regarding the problem you are trying to solve. Even if you use R square and MAE by itself, these numbers can vary by subject matter. – Ralph Winters May 26 '22 at 14:29
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Under the usual conditions (that you probably satisfy), $R^2$ can be interpreted as the proportion of variance in $y$ explained by your model. This means that your model explains $20\%$ of the variance in $y$.
Mean absolute error is the mean amount by which your model predictions miss the observed values. This means that, on average, your model misses by $0.29$.
It’s up to you to put those numbers in context. These metrics aren’t equivalent to grades in school where being over $R^2=0.90$ is an $A$-grade and scoring $R^2=0.2$ is an $F$-grade. There are situations where the low $R^2$ (or high MAE) could be fantastic for your task, and there are situations where the high $R^2$ (or low MAE) could indicate rather pedestrian performance.
Dave
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1I have addressed your first question about deciding if your performance metrics indicate an acceptable model. Your second question about increasing the $R^2$ score is equivalent to asking how to do machine learning, statistical modeling, and predictive analytics, so that question is much too broad for this Stack or any other. – Dave May 26 '22 at 10:14