The phrase "as rigorous a" is correct and usable in written English.
It is typically used to compare the level of rigor in two different contexts or subjects.
Example: "The study was as rigorous a process as the previous one, ensuring high-quality results."
Alternatives: "as strict a" or "as thorough a".
The 28 schools in New York City that sought exemption, he said, had failed to provide evidence that portfolios were as rigorous a measure of student work.
In as rigorous a way as is possible therefore we will be advancing the knowledge base in this area.
James, as rigorous a man of science as early-20th-century America produced, was an active member of the society.
His method of reading, he said, enables us "to come closer to being as rigorous a reader as the author had to be in order to write the sentence in the first place".
This is not as rigorous a thought process as an extended itemisation of Mr Kinnock's virtues and vices, but the point is that politics is better described as intuitive than shallow.
After all, I said to him, none of my running buddies, a group of nonelite but defiantly dedicated marathoners who train in Central Park, maintain as rigorous a schedule as his, and many claim to have trouble consuming enough calories even while being omnivorous.
Priori's vetting process is as rigorous as a job application and includes a comprehensive online application, face-to-face interview and professional reference checks.
Unpartitioned ML is a common approach to tree estimation, but is not as rigorous as a fully partitioned ML analysis, and has different theoretical properties in the presence of ILS [ 4].
Study away courses issuing Duke credit are designed to be as rigorous as a course on Duke's campus.
A 5.5-meter python, for example, can create a force of about 1 kilogram per square centimeter on its victim--about six times as rigorous as a firm handshake.
