How I'm fighting bias in algorithms | Joy Buolamwini

312,131 views ・ 2017-03-29

TED


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翻译人员: Cong Zhu 校对人员: Aviva Nassimi
00:12
Hello, I'm Joy, a poet of code,
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大家好 我是乔伊 一位写代码的诗人
00:16
on a mission to stop an unseen force that's rising,
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我正努力阻止一股 逐渐凸显的无形力量
00:21
a force that I called "the coded gaze,"
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一种我称为 代码的凝视 的力量
00:23
my term for algorithmic bias.
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这是我用来定义算法偏见的术语
00:27
Algorithmic bias, like human bias, results in unfairness.
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正如人类之间的偏见 算法偏见也会导致不公平
00:31
However, algorithms, like viruses, can spread bias on a massive scale
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然而算法就像病毒一样 会以飞快的速度大范围地
00:37
at a rapid pace.
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扩散偏见
00:39
Algorithmic bias can also lead to exclusionary experiences
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算法也将会导致排他的经历和
00:44
and discriminatory practices.
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歧视性的做法
00:46
Let me show you what I mean.
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给大家举个例子
00:48
(Video) Joy Buolamwini: Hi, camera. I've got a face.
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(录像)乔伊·博拉维尼: 嘿 摄像头 我来了
00:51
Can you see my face?
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你可以看到我的脸吗
00:53
No-glasses face?
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没有戴眼镜的脸呢
00:55
You can see her face.
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你可以看到她的脸
00:58
What about my face?
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那么我的脸呢
01:03
I've got a mask. Can you see my mask?
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我戴上了一个面罩 你可以看到我的面罩吗
01:08
Joy Buolamwini: So how did this happen?
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乔伊·博拉维尼: 这是怎么回事呢
01:10
Why am I sitting in front of a computer
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为什么我坐在一台电脑前
01:13
in a white mask,
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戴着一个白色的面罩
01:15
trying to be detected by a cheap webcam?
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尝试着被一个廉价的 网络摄像头检测到
01:18
Well, when I'm not fighting the coded gaze
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当我的身份不是写代码的诗人
01:21
as a poet of code,
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与 代码的凝视 较劲的时候
01:22
I'm a graduate student at the MIT Media Lab,
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我是MIT媒体实验室的 一位硕士生
01:26
and there I have the opportunity to work on all sorts of whimsical projects,
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在那里我有机会参与 各种不同的项目
01:31
including the Aspire Mirror,
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包括激励镜子
01:33
a project I did so I could project digital masks onto my reflection.
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一个可以将数字面罩 投射在我的映像上的项目
01:38
So in the morning, if I wanted to feel powerful,
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在早上的时候 如果我想充满力量
01:40
I could put on a lion.
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我可以放上一个狮子的图像
01:42
If I wanted to be uplifted, I might have a quote.
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如果我想要感到积极向上 我也许就会放上一句格言
01:45
So I used generic facial recognition software
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我使用通用的人脸识别软件
01:48
to build the system,
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来搭建系统
01:50
but found it was really hard to test it unless I wore a white mask.
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但是我发现除非我戴上白色的面罩 否则测试很难成功
01:56
Unfortunately, I've run into this issue before.
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遗憾的是 我以前 也曾遇到过这种问题
02:00
When I was an undergraduate at Georgia Tech studying computer science,
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当我在佐治亚理工学院 读计算机科学专业本科的时候
02:04
I used to work on social robots,
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我曾经在一个 社交机器人上进行实验
02:06
and one of my tasks was to get a robot to play peek-a-boo,
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我的任务之一是 让机器人玩躲猫猫
02:10
a simple turn-taking game
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一个简单的轮换游戏
02:12
where partners cover their face and then uncover it saying, "Peek-a-boo!"
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在游戏中玩伴盖住他们的脸 然后掀开说“躲猫猫!“
02:16
The problem is, peek-a-boo doesn't really work if I can't see you,
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问题是躲猫猫在我不能 看见你的时候不起作用
02:21
and my robot couldn't see me.
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而我的机器人看不见我
02:23
But I borrowed my roommate's face to get the project done,
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我只好借了我室友的脸 去完成这个项目
02:27
submitted the assignment,
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递交了作业
02:29
and figured, you know what, somebody else will solve this problem.
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寻思着总会有人 来解决这个问题的把
02:33
Not too long after,
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不久之后
02:35
I was in Hong Kong for an entrepreneurship competition.
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我在香港参加一次创业比赛
02:40
The organizers decided to take participants
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组织者决定将各位参与者
02:42
on a tour of local start-ups.
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带到当地的初创企业参观
02:45
One of the start-ups had a social robot,
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其中一个创业公司 有一个社交机器人
02:48
and they decided to do a demo.
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他们决定进行一个项目演示
02:49
The demo worked on everybody until it got to me,
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这个项目演示对除我之外的 每个人都有效果
02:52
and you can probably guess it.
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你恐怕可以猜到
02:54
It couldn't detect my face.
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它不能检测到我的脸
02:57
I asked the developers what was going on,
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我问开发师到底发生了什么
03:00
and it turned out we had used the same generic facial recognition software.
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结果是我们使用了同一款 通用面部识别软件
03:05
Halfway around the world,
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在地球的另一边
03:07
I learned that algorithmic bias can travel as quickly
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我意识到算法偏见 传播得如此之快
03:11
as it takes to download some files off of the internet.
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只需要从互联网上 下载一些文件
03:15
So what's going on? Why isn't my face being detected?
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那么到底发生了什么 为什么我的脸没有被检测到
03:18
Well, we have to look at how we give machines sight.
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我们需要了解我们 如何教会机器识别
03:22
Computer vision uses machine learning techniques
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计算机视觉使用机器学习技术
03:25
to do facial recognition.
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来进行面部识别
03:27
So how this works is, you create a training set with examples of faces.
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所以你要用一系列脸的样本 创建一个训练体系
03:31
This is a face. This is a face. This is not a face.
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这是一张脸 这是一张脸 而这不是一张脸
03:34
And over time, you can teach a computer how to recognize other faces.
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慢慢地你可以教电脑 如何识别其它的脸
03:38
However, if the training sets aren't really that diverse,
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然而如果这个训练集 不是那么的多样化
03:42
any face that deviates too much from the established norm
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那些与已建立的标准 偏差较多的脸
03:46
will be harder to detect,
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将会难以被检测到
03:47
which is what was happening to me.
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而这正是我遭遇的问题
03:49
But don't worry -- there's some good news.
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不过别担心 我们还有好消息
03:52
Training sets don't just materialize out of nowhere.
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训练集并不是凭空产生的
03:54
We actually can create them.
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实际上我们可以创造它们
03:56
So there's an opportunity to create full-spectrum training sets
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现在就有机会去创造 全波段光谱的训练集
04:00
that reflect a richer portrait of humanity.
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可以反映更加饱满的人类面貌
04:04
Now you've seen in my examples
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现在你看到了在我的例子中
04:07
how social robots
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社交机器人
04:08
was how I found out about exclusion with algorithmic bias.
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使我发现了算法偏见的排他性
04:13
But algorithmic bias can also lead to discriminatory practices.
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不过算法偏见还会导致 各种歧视性的做法
04:19
Across the US,
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美国境内的警察局
04:20
police departments are starting to use facial recognition software
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在打击犯罪的过程中
04:24
in their crime-fighting arsenal.
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开始使用面部识别软件
04:27
Georgetown Law published a report
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乔治敦大学法学院 发表了一个报告
04:29
showing that one in two adults in the US -- that's 117 million people --
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表明在全美两个成年人中就有一个 也就是近1.2亿的人口
04:36
have their faces in facial recognition networks.
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他们的面部信息 被储存在了面部识别网络中
04:39
Police departments can currently look at these networks unregulated,
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警察局如今可以访问 这些未被规范的
04:44
using algorithms that have not been audited for accuracy.
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使用着未审核准确性的 算法的面部识别网络
04:48
Yet we know facial recognition is not fail proof,
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然而我们知道面部识别 并非万无一失
04:52
and labeling faces consistently remains a challenge.
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而持续地给面部标签 还是很有挑战性的
04:56
You might have seen this on Facebook.
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你也许在Facebook上见过这个
04:58
My friends and I laugh all the time when we see other people
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当我和我的朋友看到其他人 在我们的照片上被错误标注时
05:01
mislabeled in our photos.
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都会捧腹大笑
05:04
But misidentifying a suspected criminal is no laughing matter,
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但是误认一个犯罪嫌疑人 可不是闹着玩儿的
05:09
nor is breaching civil liberties.
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对公民自由的侵犯也不容忽视
05:12
Machine learning is being used for facial recognition,
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机器学习正被用于面部识别
05:15
but it's also extending beyond the realm of computer vision.
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但也延伸到了计算机视觉领域之外
05:21
In her book, "Weapons of Math Destruction,"
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在数据科学家凯西·欧奈尔在她 《数学杀伤性武器》一书中
05:25
data scientist Cathy O'Neil talks about the rising new WMDs --
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叙述了逐渐严重的 新型大规模杀伤性武器
05:31
widespread, mysterious and destructive algorithms
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即 广泛应用而又神秘的 具有破坏性的算法
05:36
that are increasingly being used to make decisions
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正在被越来越多地 运用于决策制定上
05:39
that impact more aspects of our lives.
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而这些决策影响着 我们生活的方方面面
05:42
So who gets hired or fired?
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谁被录用 又有谁被解雇
05:44
Do you get that loan? Do you get insurance?
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你得到了贷款吗 你买到了保险吗
05:46
Are you admitted into the college you wanted to get into?
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你被心目中的理想大学录取了吗
05:49
Do you and I pay the same price for the same product
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在同一平台上的同一件产品
05:53
purchased on the same platform?
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你和我是否支付同样的价格
05:55
Law enforcement is also starting to use machine learning
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为了实现警情预测 执法机构也开始
05:59
for predictive policing.
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使用起机器学习
06:02
Some judges use machine-generated risk scores to determine
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一些法官使用机器生成的 危险评分来决定
06:05
how long an individual is going to spend in prison.
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囚犯要在监狱里呆多久
06:09
So we really have to think about these decisions.
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我们真的应该 仔细思考这些决定
06:12
Are they fair?
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它们公平吗
06:13
And we've seen that algorithmic bias
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我们已经清楚了 算法偏见
06:16
doesn't necessarily always lead to fair outcomes.
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不一定总能带来公平的结果
06:19
So what can we do about it?
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那我们应该怎么做呢
06:21
Well, we can start thinking about how we create more inclusive code
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我们可以开始思考如何 创造更具有包容性的代码
06:25
and employ inclusive coding practices.
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并且运用有包容性的编程实践
06:28
It really starts with people.
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这真的要从人开始
06:31
So who codes matters.
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由谁来编程很重要
06:33
Are we creating full-spectrum teams with diverse individuals
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我们组建的全光谱团队中 是否包括各种各样的个体
06:37
who can check each other's blind spots?
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他们可以弥补彼此的盲区吗
06:40
On the technical side, how we code matters.
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在技术层面上 我们如何编程很重要
06:43
Are we factoring in fairness as we're developing systems?
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我们在研发系统的同时 有没有也考虑到公平的因素
06:47
And finally, why we code matters.
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最后一点 我们为什么编程也很重要
06:50
We've used tools of computational creation to unlock immense wealth.
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我们用计算机创建的工具 创造了巨大的财富
06:55
We now have the opportunity to unlock even greater equality
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现在我们有机会去 创造进一步的平等
07:00
if we make social change a priority
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我们应该优先考虑社会变革
07:03
and not an afterthought.
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而不是想着事后优化
07:05
And so these are the three tenets that will make up the "incoding" movement.
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所以这三个宗旨 将构成“译码”运动
07:10
Who codes matters,
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由谁来编程很重要
07:12
how we code matters
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我们如何编程很重要
07:13
and why we code matters.
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以及我们为什么编程很重要
07:15
So to go towards incoding, we can start thinking about
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所以就译码来说 我们可以开始考虑
07:18
building platforms that can identify bias
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建立一个我们可以辨识偏见的平台
07:21
by collecting people's experiences like the ones I shared,
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通过收集人们与我类似的经历
07:25
but also auditing existing software.
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不过也要审查现有的软件
07:28
We can also start to create more inclusive training sets.
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我们也可以创造一些 更有包容性的训练集
07:31
Imagine a "Selfies for Inclusion" campaign
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想象一个为了包容性的自拍运动
07:34
where you and I can help developers test and create
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在那里 你和我可以帮助 程序员测试以及创造
07:38
more inclusive training sets.
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更具包容性的训练集
07:41
And we can also start thinking more conscientiously
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我们还可以开始更认真地思考
07:43
about the social impact of the technology that we're developing.
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关于正在发展的科技 造成的社会影响
07:49
To get the incoding movement started,
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为了开启译码运动
07:51
I've launched the Algorithmic Justice League,
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我发起了算法正义联盟
07:54
where anyone who cares about fairness can help fight the coded gaze.
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在那里任何关心公平的人 可以出力来对抗 代码的凝视
08:00
On codedgaze.com, you can report bias,
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在codedgaze.com网站 你可以举报偏见
08:03
request audits, become a tester
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请求审核 成为测试者
08:06
and join the ongoing conversation,
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以及加入正在进行的谈话
08:09
#codedgaze.
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标签就是 代码的凝视
08:12
So I invite you to join me
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我在此邀请各位加入我
08:15
in creating a world where technology works for all of us,
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去创造一个让科技为我们 所有人服务的世界
08:18
not just some of us,
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而不是只服务于部分人
08:20
a world where we value inclusion and center social change.
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一个我们珍惜包容和 聚焦社会变革的世界
08:25
Thank you.
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谢谢
08:26
(Applause)
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(掌声)
08:32
But I have one question:
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不过我还有一个问题
08:35
Will you join me in the fight?
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你会与我并肩战斗吗
08:37
(Laughter)
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(笑声)
08:38
(Applause)
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(掌声)
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