Method and system for quantifying and removing spatial-intensity trends in microarray data
First Claim
1. A method for quantifying and correcting spatial-intensity trends in a microarray data set having one or more channels, the method comprising:
- selecting a set of features, based on intensity level, from each channel of the microarray data set;
determining surface intensities for each feature in the channel of the microarray data set from a surface calculated based on intensity levels of the selected set of features;
quantifying the spatial-intensity trends in each channel of the microarray data set based on the surface intensities; and
correcting feature intensities for each channel of the multi-channel, microarray data set based on the determined surface intensities; and
performing at least one of;
outputting a result of the method to a display;
outputting a result of the method to memory;
outputting a result of the method to a computer on a network;
or outputting a result to a human user in human-readable format.
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Abstract
A method and system for quantifying and correcting spatial-intensity trends for each channel of a microarray data set having one or more channels. The method and system of one embodiment of the present invention selects a set of features from each channel of the microarray data set. Based on the selected set of features, a surface is used to determine the intensities for all features in each channel of the microarray data set. Spatial-intensity trends within the microarray data set are quantified, based on the surface to the intensities for each channel of the microarray data set. After the surface has been determined, the spatial-intensity trend can be removed from the microarray data set.
165 Citations
22 Claims
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1. A method for quantifying and correcting spatial-intensity trends in a microarray data set having one or more channels, the method comprising:
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selecting a set of features, based on intensity level, from each channel of the microarray data set; determining surface intensities for each feature in the channel of the microarray data set from a surface calculated based on intensity levels of the selected set of features; quantifying the spatial-intensity trends in each channel of the microarray data set based on the surface intensities; and correcting feature intensities for each channel of the multi-channel, microarray data set based on the determined surface intensities; and performing at least one of;
outputting a result of the method to a display;
outputting a result of the method to memory;
outputting a result of the method to a computer on a network;
or outputting a result to a human user in human-readable format. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A program on physical computer readable media configured to, when executed, provide a computer user interface comprising:
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a listing of each microarray data set stored in a microarray database; an optional debug mode; a scrollable display listing available filters; a selection window for selecting optional moving-window filtering; an input window for inputting a size of the optional moving-window filter; an input window for selecting a fraction of selected filtered features; an input window for selecting an increment of the moving window filter; and a display window for displaying metric values for each microarray data set that allows a user to determine which surfaces are added to the database.
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22. A system for determining spatial intensity trends in microarrays data, the system comprising:
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a computer processor; a communications medium by which one or more microarray data sets are received by the microarray-data processing system; a program, stored in the one or more memory components and executed by the computer processor to perform a method that selects a set of features, based on intensity levels, from each channel of the microarray data set;
determines surface intensities for each feature in the channel of the microarray data set based on the selected set of features;
quantifies the spatial-intensity trends in each channel of the microarray data set based on the surface intensities;
corrects feature intensities for each channel of the multi-channel, microarray data set based on the determined surface intensities; and
performs at least one of;
outputting a result of the method to a display;
outputting a result of the method to memory;
outputting a result of the method to a computer on a network;
or outputting a result to a human user in human-readable format.
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Specification