George Mason track star Abdi Bile, the world champion in the men's 1,500 meters, is expected to announce at a news conference today that he will not compete for the university this season in order to train for the 1988 Summer Olympics. However, the two-time NCAA champion will remain on scholarship and train with the team, sources said.

Bile, a 24-year-old from Somalia who won the gold medal in the 1,500 at the world championships in Rome last week, will continue his education as a marketing major at the school.

A senior, he has used up his eligibility for the indoor season, and has just outdoor eligibility remaining. But to compete in one last NCAA season could jeopardize his Olympic training, so athletic department officials have agreed to let him remain on scholarship while not running for George Mason.

Sources said Bile is concerned that the Olympics come too soon after the NCAA season and might affect his chances of winning a medal for Somalia. A frail runner who has suffered from an Achilles' injury and a back problem in the last year, he will restrict his schedule to key national and international meets . . .

The UCLA men's basketball program was censured for recruiting violations and two scholarships in the 1988-89 school year were taken away, but the relatively minor actions by the NCAA were greeted with expressions of relief by UCLA officials.

The NCAA Infractions Committee report, announced at NCAA headquarters in Mission, Kan., also said the NCAA may consider more penalties if UCLA does not take appropriate action against an unnamed booster involved in one of the recruiting cases.

The committee did not impose probation or other sanctions related to postseason play or appearances on television against UCLA.

"Today, I'm relieved," said UCLA Coach Walt Hazzard. "At this point, I think our program has weathered the storm and now we're looking ahead to the future. The NCAA dealt with us very fairly. I have no denials. We answered the questions. We regret the mistakes we've made."

UCLA Chancellor Charles E. Young said of the report: "Most of the violations which have been found were very minor, or of a technical nature. I hope all of us have learned from this, that minor or technical violations are very important. I believe we were handled very fairly given the kind of allegations that were made."

"The principal issues in this case," said the report, "arose from two primary events: The provision of apartment rent during the spring of 1985 for a prospective student-athlete in men's basketball by a well-known representative of the university's athletics interests; and the recruitment of, signing of a national letter of intent by, and subsequent release from that letter of intent for an outstanding prospective student-athlete in men's basketball." . . .

Howard University is No. 2, behind Central State of Ohio, in the latest Sheridan poll of black college football teams. Howard beat Newberry, 45-0, Saturday.