Reducing error in predicted genetic relationships

A non-transitory computer readable medium for storing computer code comprising instructions, the instructions, when executed by one or more processors, cause the one or more processors to:

• receive haplotype data for a set of individuals, the haplotype data including a plurality of genetic markers;
• divide the haplotype data into segment windows;
• for each of at least two individuals in the set of individuals:
• based on the genetic markers, match segments of the haplotype data between the individual and other individuals in the set, each matched segment having a width,
• count the matched segments in each segment window, and
• estimate a weight associated with each segment window based on the count of matched segments in the associated segment window;
• calculate a weighted sum between the two individuals based on the width of each matched segment and the weights associated with the segment windows of the matched segment;
• and
• estimate a degree of ancestral relatedness between the two individuals based on the weighted sum between the two individuals.

A system comprising:

• one or more processors;
• and
• a memory storing instructions that when executed by the one or more processors cause the one or more processors to perform steps comprising:
• receiving haplotype data for a set of individuals, the haplotype data including a plurality of genetic markers;
• dividing the haplotype data into segment windows;
• for each of at least two individuals in the set of individuals:
• based on the genetic markers, matching segments of the haplotype data between the individual and other individuals in the set, each matched segment having a width,
• counting the matched segments in each segment window, and
• estimating a weight associated with each segment window based on the count of matched segments in the associated segment window;
• calculating a weighted sum between the two individuals based on the width of each matched segment and the weights associated with the segment windows of the matched segment;
• and
• estimating a degree of ancestral relatedness between the two individuals based on the weighted sum between the two individuals.