
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given the function $f(x)=a\ln x-bx^{2}(x > 0)$, if the function $y=f(x)$ is tangent to the line $y=-1$ at $x=1$.
(I) Find the values of the real numbers $a$ and $b$;
(II) Find the maximum value of the function $y=f(x)$ on $\left[ \frac {1}{e},e\right]$.

Present the answer in LaTex format: \boxed{Your answer}
user