---
title: Version 1.0
author: Anqi Fu, David W. Kang, Balasubramanian Narasimhan and Stephen Boyd
bibliography: bibtex/cvxr_refs.bib
date: '`r Sys.Date()`'
output:
  html_document:
  fig_caption: yes
  theme: cerulean
  toc: yes
  toc_depth: 2
vignette: >
  %\VignetteIndexEntry{version1}
  %\VignetteEngine{knitr::rmarkdown}
  \usepackage[utf8]{inputenc}
---

## What is new?

Version 1.0 is a major upgrade. The improvements include:

- A new reduction framework that automatically chooses the most
  appropriate solver for a problem
- Addition of a large number of solvers using native `R` interfaces
- Facilities for geometric programming
- Improvements in speed.

## What has changed?

Implementation changes include: 

- Default QP solver: now, `OSQP`, which means that some results will
  differ slightly from previous runs. However, ECOS can be explicitly
  specified if exact replication of old results are desired
- Strict inequalities are not allowed in constraints.

Syntax changes (to match `cvxpy` 1.x) include:

- `Int(m, n)` is now `Variable(m, n, integer = TRUE)`
- `Bool(m, n)` is now `Variable(m, n, boolean = TRUE)`
- `Semidef(n, n)` is now `Variable(n, n, PSD = TRUE)`

and so on. Details may be found on the [CVXR
Website](https://cvxr.rbind.io).