Tableau Software, Inc.

Hailei Chen

Daniel Cory

Anushka Anand

Abhishek Joshi

Randall Moss

Michael John Arvold

Miranda Rose Rensch

Koichi Tsunoda

Daniel William DeKlotz

John Diaa Fahmy Morcos

A user interface displays: a first column comprising non-editable input strings retrieved from a data field; a second column comprising editable output strings initialized from the data field; and an expression window displaying a transformation function &#x192;. The computer iteratively processes user inputs, each user input i providing a sample row transformation to edit an ith output string t. Some user inputs i designate a contiguous substring ssof the corresponding input string s. The contiguous substring expresses a causal basis for transforming the input string s. into the output string t. The computer updates the transformation function &#x192; according to the provided sample row transformations so that: &#x192;(s)=t, . . . , &#x192;(s)=t; the transformation function &#x192; specifies text or string position of at least one contiguous substring; and &#x192; has minimal branching among possible transformation functions that satisfy the samples. The computer displays the updated transformation function &#x192; in the expression window.

Generating visually simplified calculation expressions corresponding to user manipulation of textual data elements

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Mercer Island, WA, United States of America

Hailei Chen