-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathblog.html
220 lines (189 loc) · 10.5 KB
/
blog.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
<!DOCTYPE HTML>
<!--
Prologue by HTML5 UP
html5up.net | @ajlkn
Free for personal and commercial use under the CCA 3.0 license (html5up.net/license)
-->
<html>
<head>
<title>Dyna2Gams – Optimal Control with GAMS</title>
<meta charset="ISO-8859-1" />
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no" />
<meta property="og:type" content="website" />
<meta property="og:title" content="Dyna2Gams" />
<meta property="og:description" content="Optimal Control with GAMS" />
<meta property="og:url" content="https://dyna2gams.github.io/" />
<meta property="og:site_name" content="Dyna2Gams" />
<meta property="og:image" content="https://dyna2gams.github.io/images/dyna-sts-9-launch.jpg" />
<meta property="og:image:width" content="2048" />
<meta property="og:image:height" content="963" />
<meta property="og:locale" content="en_US" />
<meta name="twitter:text:title" content="Home" />
<meta name="twitter:image" content="https://dyna2gams.github.io/images/dyna-sts-9-launch.jpg?w=640" />
<meta name="twitter:card" content="summary_large_image" />
<link rel="icon" href="images/dyna2gams-32x32.jpg" sizes="32x32" />
<link rel="icon" href="images/dyna2gams-192x192.jpg" sizes="192x192" />
<link rel="apple-touch-icon-precomposed" href="images/dyna2gams-180x180.jpg" />
<meta name="msapplication-TileImage" content="images/dyna2gams-270x270.jpg" />
<!--[if lte IE 8]><script src="assets/js/ie/html5shiv.js" type="text/javascript"></script><![endif]-->
<link rel="stylesheet" href="assets/css/main.css" />
<!--[if lte IE 8]><link rel="stylesheet" href="assets/css/ie8.css" /><![endif]-->
<!--[if lte IE 9]><link rel="stylesheet" href="assets/css/ie9.css" /><![endif]-->
<style>
ul.compact, ol.compact {
margin-top: -2em;
margin-bottom: 0em;
}
</style>
</head>
<body class="is-preload">
<!-- Header -->
<div id="header">
<section class="bannerv">
<div class="top">
<!-- Logo -->
<div id="logo">
<!--span class="image avatar48"><img src="images/avatar.jpg" alt="" /></span-->
<h1 id="title">DYNA2GAMS</h1>
<p>optimal control with GAMS</p>
</div>
<!-- Nav -->
<nav id="nav">
<ul>
<li><a href="index.html" id="home-link">Home</a></li>
<li><a href="features.html" id="features-link">Features</a></li>
<li><a href="tutorial.html" id="examples-link">Tutorial</a></li>
<li><a href="examples.html" id="examples-link">Examples</a></li>
<li><a href="download.html" id="download-link">Download</a></li>
<li><a href="contact.html" id="contact-link">Contact</a></li>
<li><a href="#top" id="blog-link" class="scrolly active">Blog</a></li>
</ul>
</nav>
</div>
<div class="bottom">
<!-- Social Icons -->
<ul class="icons">
<!--li><a href="#" class="icon fa-twitter"><span class="label">Twitter</span></a></li-->
<!--li><a href="#" class="icon fa-facebook"><span class="label">Facebook</span></a></li-->
<li><a href="https://github.com/dyna2gams" class="icon fa-github"><span class="label">Github</span></a></li>
<!--li><a href="#" class="icon fa-dribbble"><span class="label">Dribbble</span></a></li-->
<li><a href="https://www.linkedin.com/in/alain-jean-michiels/" class="icon fa-linkedin"><span class="label">LinkedIn</span></a></li>
<li><a href="mailto:[email protected]" class="icon fa-envelope"><span class="label">Email</span></a></li>
</ul>
</div>
</section>
</div>
<!-- Main -->
<div id="main">
<!-- Intro -->
<!-- Blog -->
<section id="blog" class="two">
<div class="container">
<header>
<h2>Blog</h2>
</header>
<div align="left">
<p>“Everything simple is false. Everything complex is unusable.” – Paul Valéry
<h3>DYNA2GAMS 1.6</h3>
<h4><i class="icon fa-calendar"> </i>28/12/2021</h4>
<p>The release 1.6 of DYNA2GAMS is out.
It encompasses the following new features:
<ul class="compact">
<li>smooth homotopy of non-diffferentiable functions (<i>smoothMin, smoothMax, ...</i>) are provided.
<i>Heaviside</i> is now non-differentiable (so was <i>Heavisided</i>, which has been suppressed) whereas <i>smoothHeaviside</i>
is its differentiable smooth counterpart;
<li>support for utf8 lowercase and uppercase Greek alphabet (α, β, γ, etc.) that can be mixed with the Latin alphabet;
<li>encapsulated interpolation functions (<i>Grid2Dim, Grid3Dim, Grid4Dim</i>) can tabulate large amount of data, up to
dimension four, that are stored on an external binary file. Preprocessing occurs offline and upstream of the optimization
or the simulation. At this moment, only gridded data are used but the framework will later feature scattered data and shape
preserving interpolation;
<li><i>dyna-dbf-init.exe</i> creates an encapsulated interpolation function; <i>dyna-dbf-dump.exe</i> dumps the content of the
binary file supporting the encapsulated function;
<li><i>@export</i> is a GAMS macro-code to export a variable to a text file for a downstream processing by the utility
<i>dyna-dbf-init.exe</i>;
<li><i>.{F X Y Z W 1 2 3 4}{LO UP}</i> are attributes for tabulated functions that return the minimum or the maximum of the function
or of any of its arguments;
<li>new compiler directive <i>@whennset</i> provide a <i>@case</i> choice when the required compiler variable has not been set;
<li>new examples and cosmetic changes to a few old ones.
</ul>
The package is available from our <a href="download.html">Download</a> page
and the <a href="https://github.com/dyna2gams/dyna2gams.github.io/releases">Releases History</a>.
<p>
<h3>DYNA2GAMS 1.5</h3>
<h4><i class="icon fa-calendar"> </i>18/03/2021</h4>
<p>The version 1.5 of DYNA2GAMS has just been released for Spring 2021.
It encompasses a bunch of new features and related examples:
<ul class="compact">
<li>indexing braces now provide for up to 4 indices;
<li>extended syntax of the sections <i>par</i> and <i>tpa</i>;
<li>two new smoothing methods of time series;
<li>additional goodness of fit functions and macros for the greybox identification of systems;
<li>a Newton-Raphson scheme to deal with the dynamic simulation of a quasi-triangular system of equations;
<li>additional tools to ease solving stochastic optimal control problems;
<li>aesthetic changes to a few old examples.
</ul>
The package is available from the <a href="https://github.com/dyna2gams/dyna2gams.github.io/releases">Releases History</a>.
<p>
<h3>DYNA2GAMS 1.4</h3>
<h4><i class="icon fa-calendar"> </i>01/08/2020</h4>
<p>The coronavirus lockdown gave us plenty of time to work on release 1.4 of DYNA2GAMS which encompasses the
following new features and many examples to illustrate their use:
<ul class="compact">
<li>differential complementary systems;
<li>stochastic differential equations;
<li>stochastic optimal control (incl. Wiener process);
<li>chance constrained optimal control;
<li>matlab-like or gams-like syntax to key in tabular data;
<li>a <i>put</i> section to dynamically generate output files (Matlab/Octave, csv...);
<li>an entry <i>time-model=none</i> in the <i>run</i> section to allow for a customized optimization not related to optimal control;
<li>a keyword <i>include-library</i> in the <i>run</i> section to offer access to a bunch of functions to approximate surfaces up
to 4 variables with Chebyshev, Hermite or Legendre polynomials, up to 9 variables with Chebyshev-Smolyak procedure,
and Tauchen to discretize AR1 processes;
<li>$libinclude files to ease the implementation of a fractional laplacian or a hammersley pseudo-random sequence;
<li>stochastic dynamic programming problems.
</ul>
The package is available from the <a href="https://github.com/dyna2gams/dyna2gams.github.io/releases">Releases History</a>.
<p>
<h3>DYNA2GAMS 1.3</h3>
<h4><i class="icon fa-calendar"> </i>25/01/2020</h4>
<p>DYNA2GAMS 1.3 is out and comes with a bunch of new examples.
The package is available from the <a href="https://github.com/dyna2gams/dyna2gams.github.io/releases">Releases History</a>.
<h3>DYNA2GAMS 1.2</h3>
<h4><i class="icon fa-calendar"> </i>01/09/2019</h4>
<p>DYNA2GAMS 1.2 is out and comes with a preliminary approach of stochastic differential equations,
integrators for stiff differential equations and additional examples.
The package is available from the <a href="https://github.com/dyna2gams/dyna2gams.github.io/releases">Releases History</a>.
<h3>DYNA2GAMS 1.1</h3>
<h4><i class="icon fa-calendar"> </i>21/04/2019</h4>
<p>DYNA2GAMS 1.1 is out! New features comprise model predictive control, fractional derivative, differential
games and many more examples.
The package is available from the <a href="https://github.com/dyna2gams/dyna2gams.github.io/releases">Releases History</a>.
<h3>DYNA2GAMS 1.0</h3>
<h4><i class="icon fa-calendar"> </i>29/12/2018</h4>
<!--
<i class="icon fa-clock-o"> </i>download
-->
<p>DYNA2GAMS 1.0 is out! The package is available from the <a href="https://github.com/dyna2gams/dyna2gams.github.io/releases">Releases History</a>.
</div>
</div>
</section>
</div>
<!-- Footer -->
<div id="footer">
<!-- Copyright -->
<ul class="copyright">
<li>© Alain J. Michiels. All rights reserved.</li>
<li>Original design: <a href="http://html5up.net">HTML5 UP</a></li>
<li>Banner: <a href="https://www.flickr.com/people/44494372@N05">NASA on The Commons</a></li>
</ul>
</div>
<!-- Scripts -->
<script src="assets/js/jquery.min.js"></script>
<script src="assets/js/jquery.scrolly.min.js"></script>
<script src="assets/js/jquery.scrollex.min.js"></script>
<script src="assets/js/browser.min.js"></script>
<script src="assets/js/breakpoints.min.js"></script>
<script src="assets/js/util.js"></script>
<script src="assets/js/main.js"></script>
</body>
</html>