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Quantum Computing
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QC call minutes 1/11/18:
· Somatic Mosaicism in Brain project: consequences for SCZ (others in Consortium for ASD, Tourette’s and Epilepsy); specifically, CNVs in single cells; 300 cells per individual, 5 SCZ, 5 CTRLs, 4000 data points per cell, seeking SVM for data classification, or significant features such as genes relevant to SCZ; reduce the resolution and coarse-grain to meet current size limitations of IBM Qubit system – 50 qubits.
· Kanix Wang, U of Chicago (Andrey Rezesky’s lab) Classification of common human determinants: separate genotypic influence from environment and combine to produce phenotypes; define “Disease Liability” that accounts for the genotypic influence (Gaussian distributed); correlation between disease pairs; issues with large sample size (data on 129K families), reduced through filtering, as well as large numbers of disease, reduced as well; model involves decomposition of variance using genetic + several environmental factors, variance among couples, siblings and families; determine heritability; lower size to meet limitations
· Mike Gandal (UCLA) integrative models of psychiatric disease genomic regulation: integration of genotypes, RNA-seq, QTLs into single network and connect this with phenotype; current approach WGCNA; QC could help with non-linearity aspect, small-size + high complexity is sort of problem to deal with;
· Dimension of available space 4^(N-1), N = number of qubits, so lots of problem space, but there are other bottlenecks to large-scale tasks: T1 energy leak (weaker) < quantum coherence < measurement fidelity (environmental noise, precision of acquisition) < gate fidelity (bad control over phase) are issues, need better control; max 100-200 gates, this limits complexity of feature space; cannot debug as this causes wavefunction collapse
· Gerstein lab to come up with proposal presentation for next call
