Protein Crystallization Segmentation and Classification Using Subordinate Color Channel in Fluorescence Microscopy Images

Tran, Truong X.; Pusey, Marc L.; Aygün, Ramazan

doi:10.1007/s10895-020-02500-7

“…Moreover, different researchers use various feature extraction techniques and classification models to classify the trial images into different categories of the crystallization observations, such as non-crystal, crystal or tiny crystal, larger crystal, etc. [4]. It is not easy to compare the performance of these studies due to their diversity.…”

Section: Testing Else-tree Classifier On Classifying Protein Crystall...mentioning

confidence: 99%

Trustable Decision Tree Model using Else-Tree Classifier

Tran

¹

,

Pusey

²

,

Aygün

³

2022

Preprint

0

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With advances in machine learning and artificial intelligence, learning models have been used in many decision-making and classification applications. The nature of critical applications, which require a high level of trust in the prediction results, has motivated researchers to study classification algorithms that would minimize misclassification errors. In our study, we have developed the {\em trustable machine learning methodology} that allows the classification model to learn its limitations by rejecting the decision on cases likely yield to misclassificationsand hence produce highly confident outputs. This paper presents our trustable decision tree model through the development of the {\em Else-Tree} classifier algorithm. In contrast to the traditional decision tree models, which use a measurement of impurity to build the tree and decide class labels based on the majority of data samples at the leaf nodes, Else-Tree analyzes homogeneous regions of training data with similar attribute values and the same class label. After identifying the longest or most populated contiguous range per class, a decision node is created for that class, and the rest of the ranges are fed into the else branch to continue building the tree model. The Else-Tree model does not necessarily assign a class for conflicting or doubtful samples. Instead, it has an else-leaf node, led by the last else branch, to determine rejected or undecided data. The Else-Tree classifier has been evaluated and compared with other models through multiple datasets. The results show that Else-Tree can minimize the rate of misclassification.

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“…Moreover, different researchers use various feature extraction techniques and classification models to classify the trial images into different categories of the crystallization observations, such as non-crystal, crystal or tiny crystal, larger crystal, etc. [4]. It is not easy to compare the performance of these studies due to their diversity.…”

Section: Testing Else-tree Classifier On Classifying Protein Crystall...mentioning

confidence: 99%

“…In such situations, the predictive model rejecting to make a decision and delegating the burden decision to an expert could be a better option. In our study on protein crystallization analysis, the crystallographer recommended having a third class called "likely-leads" in addition to crystal and non-crystal categories [2][3][4]. The rationale is the fact that the missed crystals are likely to be classified as "likely-leads" rather than "non-crystals," and human experts can review them and classify them manually.…”

Section: Introductionmentioning

confidence: 99%

Trustable Decision Tree Model using Else-Tree Classifier

Tran

¹

,

Pusey

²

,

Aygün

³

2022

Preprint

0

View full text Add to dashboard Cite

With advances in machine learning and artificial intelligence, learning models have been used in many decision-making and classification applications. The nature of critical applications, which require a high level of trust in the prediction results, has motivated researchers to study classification algorithms that would minimize misclassification errors. In our study, we have developed the {\em trustable machine learning methodology} that allows the classification model to learn its limitations by rejecting the decision on cases likely yield to misclassificationsand hence produce highly confident outputs. This paper presents our trustable decision tree model through the development of the {\em Else-Tree} classifier algorithm. In contrast to the traditional decision tree models, which use a measurement of impurity to build the tree and decide class labels based on the majority of data samples at the leaf nodes, Else-Tree analyzes homogeneous regions of training data with similar attribute values and the same class label. After identifying the longest or most populated contiguous range per class, a decision node is created for that class, and the rest of the ranges are fed into the else branch to continue building the tree model. The Else-Tree model does not necessarily assign a class for conflicting or doubtful samples. Instead, it has an else-leaf node, led by the last else branch, to determine rejected or undecided data. The Else-Tree classifier has been evaluated and compared with other models through multiple datasets. The results show that Else-Tree can minimize the rate of misclassification.

show abstract