n****g 发帖数: 76 | 1 【 以下文字转载自 JobHunting 讨论区,原文如下 】
发信人: njying (嘟嘟), 信区: JobHunting
标 题: 朋友传给我的INTERVIEW问题2...SQL
发信站: The unknown SPACE (Tue Jan 28 18:44:49 2003) WWW-POST
1. There is a table 'T' with order ids ('oi') and customer ids ('ci'). Each
order only belongs to a single customer and each customer may have multiple
orders. How do you find how many orders each customer has? Please provide
the SQL.
2. Users report that the server has become non-responsive. What are the
possible explanations, and how do |
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c*****t 发帖数: 1879 | 2 That's not what I meant. I meant that I have a existing SQL table
called Queue. It has a single column id. Given this table, I now
have a bunch of ids to put into the table. Yet, these ids may be
duplicated. The question is how to avoid the duplicate and at
the same time be as efficient as possible.
Thanks |
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b********w 发帖数: 334 | 3 The case is that
I have a bund of genes which have unique ids. However some of these genes
have one or more synonymes.
My question is how to design the table to inplement that. Because the user
can query the genes with the unique ids or one of its synonymes.
Thanks |
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B*****g 发帖数: 34098 | 4 delete output can only get the deleted ids, then use this ids to get tax
from external source. |
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o****e 发帖数: 916 | 5 假设有一个table User,primary key is ID(int), one field called Name
given a list of user ID, say HashSet ids
what's the most efficient way to get the list of user?
from u in Users
where ids.Contains(u.ID)
select u
this is the most basic way i can think of. I'm sure there is a better way.
I'm using linq to sql
many thanks! |
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M***7 发帖数: 2420 | 6 I want a subset of IDs, like
-------------------------
ID
1
3
4
.....
------------------------
that having all pairwise similarities between 70~85%.
The way you suggested is not working since it eliminates certain possible
pairwise comparison between IDs in the subset.
70 |
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a******t 发帖数: 125 | 7 First, find all recipe IDs that contains component 1;
Second, among the set returned from the first step, find all recipes that
contains component 2. Now you get all recipe IDs that have both component 1
and 2;
And so on...
★ 发自iPhone App: ChineseWeb 8.7 |
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o****e 发帖数: 916 | 8 【 以下文字转载自 Database 讨论区 】
发信人: okeoke (let's okeoke @ okeoke.net), 信区: Database
标 题: 问一个linq to sql编程问题
发信站: BBS 未名空间站 (Wed Jun 29 03:07:54 2011, 美东)
假设有一个table User,primary key is ID(int), one field called Name
given a list of user ID, say HashSet ids
what's the most efficient way to get the list of user?
from u in Users
where ids.Contains(u.ID)
select u
this is the most basic way i can think of. I'm sure there is a better way.
I'm using linq to sql
many thanks! |
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c*a 发帖数: 806 | 9 there are quite a few artciles talking about nework anomaly based IDS, arbor
networks SP product has been used by some customers, both enterprise and ISP
as IDS device based on netflow stats
others like Juniper ISG2000/1000 with IDP module
Not sure if anyone here have access to BurtonGroup (tbg.com), they have some
interesting articles. Gartner analysis is superficial compared to burton group
, |
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c*********4 发帖数: 249 | 10 利用Snort构建IDS系统
要求:设计网络拓扑结构,基于Snort构建一个IDS系统,实现基本的入侵检测功能。
哪位高手能否指教一二,万分感谢!!!! |
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a*****a 发帖数: 1429 | 11 这个路由器的Firmware有基本的IPS/IDS功能,用的是Snoop。华硕称之为AiProtection
。这个打开的话,速度会降一些。最多20%速度
如果使用site-to-site VPN,这个路由器大概最大速度在150M 以下。
家用如果需要好的QoS,好点IPS/IDS,需要速度比较快的site-to-site VPN,得装软路
由。 |
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c**m 发帖数: 30 | 12 要处理些数据,用map,set,recursion搞搞,结果有点慢。有没有好的algorithm?
Data can be quite large.
Given a list of sequences, each of which is a combination of ids, group the
sequences that share at least one id into a single sequence composed of all
the unique ids.
For example, say sequences are people's names, group people who share first
and/or last name.
ie.
John Smith
Paul Smith
John Hunt
Paula Foster
Kelly Foster
Chapman Kelly
would give two new sequences:
John Smith Paul Hunt
Paula Foster Kelly Chapman |
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s*******e 发帖数: 664 | 13 ☆─────────────────────────────────────☆
merriam (爱我所爱,珍惜拥有!) 于 (Sun Jan 3 16:02:31 2010, 美东) 提到:
what the correct int * GetSomeIDs() should be like? Thanks
30 int * someIDs, theFirst, *r;
110 someIDs =GetSomeIDs(); /* defined below */
111 theFirst = someIDs [0];
112 r= ReorderIDs(someIDs);
113-150 /* we want to use ‘theFirst’ and ‘r’ here*/
499 /*-------- GetSomeIDs-----*/
500 int * GetSomeIDs()
501 {
502 int ids[8];
503-550 /* The ids are defined |
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w**********a 发帖数: 6 | 14 多谢楼上三位先生赐教。
我不只是想获得汉字的拆分的具体结果,这一点,IDS (ideographic description
sequence) 项目已经做了几万字出来了,的确是查表可以得到结果。
我想做的是,通过图像识别的方法,用程序来完成这个拆分,来学习图像识别技术。
IDS的结果正好可以为图像识别的结果提供校验。
按etude先生的指点找到了一篇文章,学习中。
先生看来是CVPR(惭愧,这个词也是放狗才知道是Computer Vision and Pattern
Recognition的缩写)的行家,烦请介绍两本适合初学者的入门书吧。 |
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发帖数: 1 | 15 This is a simplified version of a real problem we encountered.
Your solutions will preferably be implemented in Go. We'll also consider
solutions implemented in Python (or other languages on request), but since
Go can be learned in approximately a day, we really do prefer a solution
written in Go.
We're building a directed graph.
The graph consists of Nodes connected by Edges.
Each Node has an ID (int64).
Each Node keeps track of its outgoing Edges (list of ids).
There might be thousands of outg... 阅读全帖 |
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m*****k 发帖数: 17 | 16 From http://madodin.gh0st.net/
Version 1.0.1
Finding a way to secure operating systems today is a complicated and donating
task to say the least. This document will probably not help much with the problem of
securing a OS, but instead, will find new ways to detect security compromises. Yes this
article is depicting a theory for a new Operating system for Intrusion Detection. This is
not an intrusion detection system (IDS) in it's self, but instead a operating system made
specifically for IDS bas |
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o***i 发帖数: 2249 | 17 Network Security:A Beginner's Guid/Intrusion Detection
More recently,a new form of H-IDS has been created
that examines calls to the operating system kernel.
This type of H-IDS is progranner with known attack
signatures and will alarm if a system call matches
any of the signatures. |
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b****a 发帖数: 249 | 18 有IDs问我关于购买的sources,这个我不能提供任何信息(否则有不公正的嫌疑),大家
也不要再来问。
有关信息可以版内搜素,或问一些可靠的老IDs. |
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b****a 发帖数: 249 | 19 卖东西的IDs都移驻那里啦?其实我觉得你们也都挺不容易的。欢迎所有卖东西的IDs常
驻那里,别再回来闹!想买资料的同学可以去看看,有便宜资料就买!只要没被骗了就
好!祝大家新年买到便宜资料,考试顺利! |
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L****S 发帖数: 76 | 20 感谢mammothcy (mammoth), 你的方法很好用。现在我可以用IMAGE J 打开.ids 的图
片并作ORTHOGONAL VIEWS。
我不太懂puppeteer (舟云) 的方法,不过还是要谢谢你。
我还有一个问题, 今天NIKON 的技术服务给我们展示了NIS Viewer (NIS ELEMENTS
RESOURCE CENTER)http://www.nis-elements.com/resources-downloads.html。 这个软件是专为NIKON 设计的, 可以打开.ids,但是却无法打开.lsm。 其实我对NIS Viewer 不太敢冒,但是我老板被NIS Viewer的volume view 功能吸引了,这个程序可以把Z 轴 图像用360 度旋转的方式展现出来。老板希望我能用IMAGE J 做出同样的效果 (或者想办法用NIS Viewer 打开.lsm-以前用德国货照的图片)。
有谁有什么方法可以解决我的问题吗?
谢谢 |
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c***y 发帖数: 615 | 21 working on mouse data. Would like to integrate information from refseq, ucsc
genome browser, GO consortium, and uniprotkb. They all have different IDs.
Is there an easy way to convert those IDs across different database?
Thank you very much for any inputs! |
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j***h 发帖数: 4412 | 22 发信人: WSN2008 (中年宅男), 信区: CivilEngineering
标 题: New job opening for Struc PHD
发信站: BBS 未名空间站 (Tue May 19 11:30:28 2009)
Just got a call from my friend and like to share it with you guys.
IDS Group, Inc is searching for a PhD (or MS w/PE/SE) to do "Office of
Statewide Health Planning & Development" pan checking, prefer seismic
analysis of building and computer modeling background, e.g. non-linear,
push-over, etc
if interested, please send resume to Danny at d********[email protected].
BTW, IDS Group, In |
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k**e 发帖数: 2728 | 23 ☆─────────────────────────────────────☆
abcd2010 (abc) 于 (Mon Oct 25 00:37:45 2010, 美东) 提到:
风景这边独好
东方欲晓,
莫道君行早。
踏遍青山人未老,
风景这边独好!
☆─────────────────────────────────────☆
wvvww (山药蛋) 于 (Mon Oct 25 00:43:57 2010, 美东) 提到:
I am wondering if poems are appropriate. BanZu is a bit ambivalent about
this. Is this site more inclusive because we have a professional club
already?
☆─────────────────────────────────────☆
wvvww (山药蛋) 于 (Mon Oct 25 00:47:48 2010, 美东) 提到:
In the grand theme of t... 阅读全帖 |
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m********4 发帖数: 607 | 24 Thank IDs on the list who have shared their successul story.
Hope the other IDs, who haven't shared yet , will have the time to write
something soon. |
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k**e 发帖数: 2728 | 25 ☆─────────────────────────────────────☆
lovelypony (pony) 于 (Mon Feb 7 17:05:10 2011, 美东) 提到:
我们一批2011年即将申请的需要个人号召组织,这样大家有事好商量,有信息好分享。
skyscorpio有组织俱乐部的经验,人又热心,pony提议加skyscorpio做班副,这样我们
能最大程度的分享受益,后来者也能受益。
多谢啦!
☆─────────────────────────────────────☆
herby (晴冬) 于 (Mon Feb 7 17:12:27 2011, 美东) 提到:
俺比较倾向蝎子做版主,这样才能让他放开手脚改革。 班副太鸡肋了。
☆─────────────────────────────────────☆
hmis (hmis) 于 (Mon Feb 7 17:13:46 2011, 美东) 提到:
support!!!
☆─────────────────────────────────────☆
DrSnail (... 阅读全帖 |
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u*****0 发帖数: 156 | 26 来自主题: MedicalCareer版 - CS考经 Rep! New IDs rule! I cant help noticing so many new IDs are coming to medi
and making their contributions to our collective knowledge. What a
wonderful world. Fresh, free and open. |
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k*****u 发帖数: 12 | 27 Did the Dok chase you away? If so, it confirms my suspicion. Dok needs a
bunch of worshipers. It is not about the Old IDs vs the new IDs. It is
about Dok wanting to be worshiped. How many doctors have Dok chased away?
People need to know the truth. |
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k**e 发帖数: 2728 | 28 谢谢。我也并没有所谓“追究”的意思。
Fairplay的确是麦地需要经营的方向。
我想如果真的分成几种思想阵营的话,我的想法和eric的想法是一致的,虽然并没有和
他直接商量过版务,但是彼此肯定对方的想法;中间也得过很多IDs,和一些已经不怎
么来上网的,过去曾经很活跃的IDs的支持和理解。
其他的思想阵营,应该算是对立派(比如说NB一派);老刀派,和闲散派(比如说狐狸
)。另外,如果您觉得我提的有错,请尽管指出。
我提这个,不是什么“处心积虑”的意思,而是觉得,如果我们能深刻的认识到这些不
同,然后大家求同存异,这才是发展的观点。
不然,就落了“麦地永恒的主题”的老套了,大家天天纠缠着,“我是对的,你的是不
对的,你不对,你就是这个,你是那个”。这样,岂不是“内讧”的典型表现了?
最后,我无意冒犯任何人。请不要对号入座。
谢谢。 |
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m********4 发帖数: 607 | 29 看得出新任板主真的是下了决心要重建麦地家园,这很好,也很难得.因为看护麦地不是
一件容易的事情. 不但耗时,耗力,而且还需要有一种"责任心".
而"责任心"是建立在"公平,正义,道德,良心"之上的.
麦地的问题不是发生在短时期内,麦地的"问题脓肿"已经到必须"切开引流"的地步. 可
是这么长时间没有一个勇敢人出来的"揭盖子""切脓肿".实在是麦地的不幸.
做为一个相对新的麦地一员, 今年是本人第一次经历麦地的火柴日.感觉很"FUNNY",为
了这个日子,麦地从上到下,进入了"一级准备战斗"状态,就如同要面对"海啸""核泄露"
一般. 没有经历过,真的是长见识不少.
新的板主队伍运行以来,大家都看到了一些变化. 好的PROJECT如CS TALK吸引来很多不
常见的IDS. 这说明,有些事情,不是能不能做到问题,而是能不能想到问题.
新上任的板斧们,工作热情高涨,受到了表扬,也制造出几个新的"抱怨".看看那些"删帖"
,看看那些"合集",如果板斧们把个人的"喜好"用于执行"板斧之责",那是对这一职位的
滥用.滥用职权的严重性是什么?
谈到麦地黑洞, 不知"绑架"著名的老IDs,算不算一个... 阅读全帖 |
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s********p 发帖数: 1319 | 30 Hella 大大, 你的问题我要Cover.
第一个问题:
尽管多发性大动脉炎多见于中青年,但它是排的No1的、肾动脉狭窄的原因。多发性
大动脉炎,一个特征:双上肢收缩压一般>10mmHg——这是个命题者给你的Gift, 加肾动
脉杂音,想都不想,“毫秒杀”答案。肾动脉粥样硬化,对老年病人,排在NO1,但题
干已经给了双上肢的压差和肾动脉杂音,直接吃“Gift”, 别想其他!
第二个问题:
Syncope,定义为:“突然的、短暂的意识丧失”,一个常见的原因,就是心脏泵血功能短暂
的不能维持。如果患者还能来到ER或者心内科,患者必然会通过“抢先占领”机制,
恢复心脏的泵功,否则,患者到不了ER。
因此,这个64HR,是患者在ER,而不是在心源性晕厥的当时。
EKG,是记录不到窦房结电活动的。P波,是心房而非窦房结的电活动。但PR延长,直指从
心房到心室传导延迟,反映从心房到房室结、His 束、His下的高位起搏点,功能都不行;
QRS延长,反映室内传导延迟、或左右心室活动不同步。这个病例,晕厥 + QRS延长 +
64HR,我高度怀疑双节病变加传导系统都有严重问题,是安三腔Pacemak... 阅读全帖 |
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e****0 发帖数: 678 | 31 I added everyone except the above IDs whom are not sharing contact with me
yet.
I am very thankful for all people who send me the request to join the
seminar. I am very sorry to say that the skype group is full for now (the
spots will be reserved for above IDS who have not sharing the contact with
me till this FRIDAY night). I do reserve 1-2 spots for people who have
urgent needs of CS exam around the corner.
Thank you |
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e****0 发帖数: 678 | 32 due to the limited the seats availabilities, I am very sorry that I am
unable to add the IDs on this entire second page. SHOULD ANYONE BE ABLE TO
HELP ME TO DEAL WITH WEBNAR,PLEASE CONTACT ME. THE MATCH SEASON STARTS NOW
AND IT IS VERY HARD FOR ME TO DEAL WITH IT OR FIND A SENIOR IDS.
PLEASE ADD ME ON SKYPE AND POINT OUT TO ME THAT YOU CAN HELP WITH WEBNAR IF
ANYONE.
THANKS. |
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w********g 发帖数: 107 | 33 Hi, guys,
I've already added all the IDs to the Skype CS seminar group.But several IDs
have not accepted the contact request yet, please check your Skype account,
otherwise I can't add you into the CS seminar group.Thanks, |
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o****o 发帖数: 8077 | 34 my general idea is :
this can be solved using hash list while your obs are index by the four IDs
SEPARATELY.
by OP's description, as searching goes on, any subsequent observation that
has 2 IDs in the current combination of id pool will be identified as
belonging to the same group, then any new ID will be added to the pool. The
main hash table contains the record number which is the unqiue ID for each
obs, and the other elements in the hash is an 5 auxilary hash lists, 4 for
id pool of each ID# |
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b**********i 发帖数: 1059 | 35 /* ids and time points */
data temp_id;
ndat = 1;
id = 1;
time = 1;
do while (ndat LE &ndats);
do while (id LE &nobs);
do while (time LE &niobs);
output temp_id;
time + 1;
end;
id + 1;
end;
ndat + 1;
end;
run;
proc print data = temp_id;
run;
用下面这个就没有问题
/* ids and time points */
data temp_id;
do ndat = 1 to &ndats;
do id= 1 to &nobs;
do time = 1 to &niobs;
|
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R*********i 发帖数: 7643 | 36 1) proc sql, the easiest way;
2) sort by ID, year and use by & retain to count # of years each ID has,
output to a list dataset, then merge back to the orginal and only keep those
from the list;
3) proc transpose year variable by ID, use array to find the IDs w. all five
years to generate a list and merge back to original keeping IDs from the
list. |
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j*****g 发帖数: 222 | 37 二流学校统计master毕业,3年做了四份工作,电面50+,onsite 10家, onsite 成功率
算7.5吧(0.5是有一家,老板很喜欢我,但是怕我干不长就跑了,面试之后还打电话给
我,要我表决心,那个时候我已经拿到一个更喜欢的offer了,于是不了了之), 大部
分都是marketing research方面的职位,因为比较感兴趣
总结一下经常问到的技术问题吧, 这些问题我觉得marketing research方向的话,基
本是必问的,其实都很简单,但是想到了还是列一下,ms列的有点乱
SAS
(1) Proc transpose
(2) Merge data的时候要注意什么问题?
a. Have to sort both tables before merging
b. Check what’s the type of merge (one to many, one to one, or many to
many?) --- check duplicates in each table (这条很多经验不够的通常都想不到
,只想到sort)
c. ... 阅读全帖 |
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i***m 发帖数: 148 | 38 很好的经验,然后我加一些自己的经验供大家讨论
SAS
(1) Proc transpose
(2) Merge data的时候要注意什么问题?
a. Have to sort both tables before merging
b. Check what’s the type of merge (one to many, one to one, or many to
many?) --- check duplicates in each table (这条很多经验不够的通常都想不到
,只想到sort)
c. What if you only want to keep the IDs in table a?
--many to many merge, data step 与sql的不同
--missing data在merge时的处理,尤其是primary key有missing时
(3) Array
If you have a data set a with 1000 columns, you want to change all the
mi... 阅读全帖 |
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r*****d 发帖数: 346 | 39 首先是感谢,版面、好帖子、赐教的ids, 尤其感谢好几个ids发信赐教,两个认真地
criticized我的简历,一个内推我拿到energy company的电面,一个我们面谈过(还保
持着联系)。都是淡如水之交。除了面谈过的那个都是江湖路上一面之缘。
=========================
转眼间我也勉强能算一个转行的fresh graduate找工作的过来人了,希望我的经验对大
家有帮助。
我是math phd, 非牛校,2013年毕业的时候无实习无其他master degree. 转行是从
2011年开始的,当时无论文无实习无技能。摸索中矿工、码工、数据科学都遍历过,幸
运的是一直重视了统计跟CS。我真心认为象我这样底子差的有几点非常重要:1. 要有
耐心;2. 不要自闭;3. 最重要的还是要靠自己。
主线之一是论文,2010年秋写到毕业,2012年我想过quit想过再读一个master甚至考了
GRE, 当时父母陪读6个月给了我莫大的力量,还有系里两个中国stat profs主动找我谈
话,甚至联系朋友内推我,我非常感激他们。那段时间我特别容易把愤怒投射到
advi... 阅读全帖 |
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p****w 发帖数: 90 | 40 nice nn【在 rrented (rrented)的大作中提到:】n:首先是感谢,版面、好帖子、赐
教的ids, 尤其感谢好几个ids发信赐教,两个认真地n:criticized我的简历,一个内
推我拿到energy company的电面,一个我们面谈过(还保持着联系)。都是淡如水之交
。除了面谈过的那个都是江湖路上一面之缘。n:n:===============
==========n:n:转眼间我也勉强能算一个转行的fresh graduate找工作的
过来人了,希望我的经验对大家有帮助。n:n……nn--n[发自未名空间Android客户端] |
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r*****d 发帖数: 346 | 41 首先是感谢,版面、好帖子、赐教的ids, 尤其感谢好几个ids发信赐教,两个认真地
criticized我的简历,一个内推我拿到energy company的电面,一个我们面谈过(还保
持着联系)。都是淡如水之交。除了面谈过的那个都是江湖路上一面之缘。
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转眼间我也勉强能算一个转行的fresh graduate找工作的过来人了,希望我的经验对大
家有帮助。
我是math phd, 非牛校,2013年毕业的时候无实习无其他master degree. 转行是从
2011年开始的,当时无论文无实习无技能。摸索中矿工、码工、数据科学都遍历过,幸
运的是一直重视了统计跟CS。我真心认为象我这样底子差的有几点非常重要:1. 要有
耐心;2. 不要自闭;3. 最重要的还是要靠自己。
主线之一是论文,2010年秋写到毕业,2012年我想过quit想过再读一个master甚至考了
GRE, 当时父母陪读6个月给了我莫大的力量,还有系里两个中国stat profs主动找我谈
话,甚至联系朋友内推我,我非常感激他们。那段时间我特别容易把愤怒投射到
advi... 阅读全帖 |
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p****w 发帖数: 90 | 42 nice nn【在 rrented (rrented)的大作中提到:】n:首先是感谢,版面、好帖子、赐
教的ids, 尤其感谢好几个ids发信赐教,两个认真地n:criticized我的简历,一个内
推我拿到energy company的电面,一个我们面谈过(还保持着联系)。都是淡如水之交
。除了面谈过的那个都是江湖路上一面之缘。n:n:===============
==========n:n:转眼间我也勉强能算一个转行的fresh graduate找工作的
过来人了,希望我的经验对大家有帮助。n:n……nn--n[发自未名空间Android客户端] |
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d**w 发帖数: 14889 | 43 nod 这个十大元老ID真的是很难选。老ID们新IDs根本就不知道。新IDs又算不上元老吧
?hehe. 而且很多老ID都换了原ID用马甲等等。很难选。
我觉得十大元老ID怎么也要是最早在98年注册但现在还actively participating BBS的。 |
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b*******n 发帖数: 5065 | 44
One of the wrong action this BBS made was to delete IDs with same Email
account without notice.
My Oldest IDs were killed, including the old mememories.
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r***i 发帖数: 12 | 45 magzhou and troyli have behaved badly in LA board. They banned many new IDs.
They encouraged PA on new IDs. |
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r***i 发帖数: 12 | 46 magzhou and troyli have behaved badly in LA board. They banned many new IDs.
They encouraged PA on new IDs. |
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c**m 发帖数: 1632 | 47 Stop it, ant. It was you who made such a noisy disturbance in the Literature
board and MMJJ had to leave.
Would you please learn how to cope with all the IDs there? Why not just try
to participate in the acitivities and make yourself likeable to all the
other IDs there?
mmjj2
。不 |
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x*******1 发帖数: 28835 | 48 【 以下文字转载自 NCAA 讨论区 】
发信人: xiaok1981 (xiaokzhu), 信区: NCAA
标 题: 作为版主竞选人之一,胖姆应该解释清楚辞职日那天发生的点滴。
发信站: BBS 未名空间站 (Mon Sep 12 08:53:54 2011, 美东)
从封禁foil开始,到迁怒其他id, 如果没有记错,是osu男子篮球队被淘汰出
tournament的那一天,本id莫名其妙封禁14天,并且有多为版友有相同经历,我当即在
complain版提出疑问,随着内阁的倒台,真相随之石沉大海。作为NCAA最大的打击报复
,冤假错案,我要请问swamp嘴里NCAA历史最好的版主,what happened that day? why
ban other IDs? 至今我的愤怒都不能消除。难到我们这些普通id就要为八盖的淘汰出
局,殉葬? 作为版主期间多次开玩笑式的封禁敌对球队ids, 所谓版务,特指桑级,无
耻之际,写下NCAA历史上最滥用权利,最无耻的一篇。 |
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