In his first policy announcement since taking office, Bill de Blasio, the city’s new public advocate, will challenge Mayor Michael R. Bloomberg’s record on homelessness and call on him to intensify his efforts to address the problem.
A day before Mr. Bloomberg’s State of the City address, scheduled for Wednesday, Mr. de Blasio will hold a news conference of his own at his office at noon on Tuesday, surrounded by invited elected officials and advocates for the homeless.
In an interview on Monday, Mr. de Blasio took Mr. Bloomberg to task for what he called “inflexibility” on addressing homelessness, despite the mayor’s ambitious promises early in his administration to reduce the number of people staying in city shelters.



























