IMM Filter versus EKF

Please tell which one has better accuracy and less computational load among IMM and EKF filter.

If there are any reference in support of this.

[kirankumar adam]

First understand what is EKF and IMM. IMM is multimodal tracker and then go for implementation. If you dont understand the difference then there no point.

[Rashi Mehrotra]

Thanks for replying. I understand the IMM and EKF as I have implemented EKF earlier, if you can please elaborate the question I asked it will be beneficial.