3f5b3cdd98
* feat: add configurable SMTP HELO hostname Allow the SMTP HELO/EHLO hostname to be configured separately from the SMTP server hostname. This is useful when the SMTP server requires clients to identify themselves with a fully qualified hostname different from the server address. * chore: remove vendored dependency changes * Bump go-pkgz/notify to v1.4.0 and document SMTP_HELO_HOST The HELOHost field lands in go-pkgz/notify v1.4.0, so the branch needs the bump to compile; v1.3.0 in master has no such field. The example module is tidied alongside, as any change to backend/go.mod requires. Documents the parameter in the parameters table and, separately, in the email setup page: what it does, that leaving it unset keeps the previous `localhost` greeting, and the case it exists for, a relay refusing the greeting under Postfix `reject_non_fqdn_helo_hostname`. Also records the current limit: verification emails for email authentication go through go-pkgz/auth's own sender, which has no equivalent setting, so the greeting there is unchanged. * Bump go-pkgz/auth to v2.2.0 and apply SMTP_HELO_HOST to verification email The verification email sender had no way to set the greeting, so a relay that refuses the HELO would accept notifications and still reject sign-in emails. EmailParams gains HELOHost in go-pkgz/auth v2.2.0, so the same SMTP_HELO_HOST now drives both paths. The example module is tidied alongside, as any change to backend/go.mod requires. --------- Co-authored-by: oli <someone@somewhere.tld> Co-authored-by: Dmitry Verkhoturov <paskal.07@gmail.com>
58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
package stats
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import "math"
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// KendallTau calculates Kendall's tau-b rank correlation coefficient
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// between two variables. Tau-b corrects for ties, matching the values
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// produced by SciPy's kendalltau and pandas' corr(method="kendall").
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// Pairs are compared with a simple O(n^2) loop for clarity.
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func KendallTau(data1, data2 Float64Data) (float64, error) {
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l1 := data1.Len()
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l2 := data2.Len()
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if l1 == 0 || l2 == 0 {
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return math.NaN(), ErrEmptyInput
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}
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if l1 != l2 {
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return math.NaN(), ErrSize
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}
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// Count concordant and discordant pairs along with pairs
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// tied only in the first or only in the second variable.
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var concordant, discordant, tiedX, tiedY float64
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for i := 0; i < l1; i++ {
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for j := i + 1; j < l1; j++ {
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dx := data1[i] - data1[j]
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dy := data2[i] - data2[j]
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switch {
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case dx == 0 && dy == 0:
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// Pairs tied in both variables are excluded
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case dx == 0:
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tiedX++
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case dy == 0:
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tiedY++
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case (dx > 0) == (dy > 0):
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concordant++
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default:
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discordant++
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}
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}
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}
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// tau-b = (C - D) / sqrt((C + D + Tx) * (C + D + Ty))
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denominator := math.Sqrt((concordant + discordant + tiedX) * (concordant + discordant + tiedY))
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if denominator == 0 {
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return 0, nil
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}
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return (concordant - discordant) / denominator, nil
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}
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// KendallTau calculates Kendall's tau-b rank correlation coefficient
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// between two variables.
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func (f Float64Data) KendallTau(d Float64Data) (float64, error) {
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return KendallTau(f, d)
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}
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