About halfway through her new memoir, “Data, a Love Story,” Amy Webb pauses to address the reader. Up to this point, the author’s online hunt for a husband has yielded little but farcically bad dates. In frustration she begins an analysis involving scatter plots and word clouds to discern the laws of success in online dating. “I want to reveal what I found,” she tells us, “so that you can improve your own dating profile.” (Spoiler alert: showing skin is a plus; lengthy “About Me” sections are a turnoff.) We then follow Webb as she uses her discoveries to lure Mr. Right. And, presumably, we close the book with a sense of how to do the same…..