The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2022
Filed:
Jul. 15, 2020
Oracle International Corporation, Redwood Shores, CA (US);
Jian Wen, Hollis, NH (US);
Hamed Ahmadi, Burnaby, CA;
Sanjay Jinturkar, Santa Clara, CA (US);
Nipun Agarwal, Saratoga, CA (US);
Lijian Wan, San Bruno, CA (US);
Shrikumar Hariharasubrahmanian, Palo Alto, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
Herein is a probabilistic indexing technique for searching semi-structured text documents in columnar storage formats such as Parquet, using columnar input/output (I/O) avoidance, and needing minimal storage overhead. In an embodiment, a computer associates columns with text strings that occur in semi-structured documents. Text words that occur in the text strings are detected. Respectively for each text word, a bitmap, of a plurality of bitmaps, that contains a respective bit for each column is generated. Based on at least one of the bitmaps, some of the columns or some of the semi-structured documents are accessed.