November 2018
Intermediate to advanced
272 pages
6h 51m
Japanese
book
エレガントなSciPy ―Pythonによる科学技術計算
by Juan Nunez-Iglesias, Stéfan van der Walt, Harriet Dashnow, 山崎 邦子, 山崎 康宏
Content preview from エレガントなSciPy ―Pythonによる科学技術計算
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
223
A.14 解答：神経細胞の接続の近さを表す図を描く
A.14
解答：神経細胞の接続の近さを表す図を描く
以下は「
6.3.1
演習：神経細胞の接続の近さを表す図を描く」の解答です。
神経細胞の接続の近さを表す図では、
y
軸に処理の深さを使う代わりに、
Q
を正規化した
3
番目
の固有値を、
x
軸でしたのと同様に用います（また、
x
軸でしたように、必要に応じて符号を反転
させます）。
y = Dinv2 @ Vec[:, 2]
asjl_index = np.argwhere(neuron_ids == 'ASJL')
if y[asjl_index] < 0:
y = -y
plot_connectome(x, y, C, labels=neuron_ids, types=neuron_types,
type_names=['sensory neurons', 'interneurons',
'motor neurons'],
xlabel='Affinity eigenvector 1',
ylabel='Affinity eigenvector 2')
■
A.14.1
チャレンジを受けて立つ：疎行列を扱う線形代数
以下は「
6.3.2
チャレンジ問題：疎行列を扱う線形代数」の解答です。
このチャレンジ問題のために、小さな神経回路図（コネクトーム）を使います。理由は、起きて
いることを視覚化しやすいからです。このチャレンジの後の方では、この手法を、より大きなネッ
トワークの解析に利用します。
神経細胞の接続の近
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.