y****1
发帖数: 213 | 1 谢谢大家意见。
在local试驾车发现不了这些问题，直到回来开高速。
是CVT。但这震动就像unbalanced tires. 正和dealer交涉。。。 |
|
d********y
发帖数: 1468 | 2 amazon是不是开始认真了
这下fba成本又上升了
Dear FBA Seller,
Learn More About FBA's Distributed Inventory Placement
(sign-in required)
Based on your recent inbound history to Amazon fulfillment centers, we found
you have been deleting shipments in a way that makes your inventory
unbalanced across the network. You must follow FBA's shipment creation
guidelines to help ensure that your inventory is balanced across the network
. Click the button at right to learn more.
To avoid inbound issues, please adhere to the ... 阅读全帖 |
|
T*******g
发帖数: 2322 | 3 Simply don't do it!
Whenever you feel "students owe me", I hope you realize that it is a
dangerous mentality. You can simply delay that manuscript and take care of
family issues first. It is good and healthy for both you and your student.
If you feel unbalanced, the student is not going to have a good time,
neither is you.
.
for |
|
k***n
发帖数: 3158 | 4 you don't even bother reading the great "Amreican first budget"? lol
we cannot affort this and that, but we can certainly afford adding 10%
on top of a massive defense budget which has been more than the next 7-8
countires combined.
for fiscal conservatives, any unbalanced budget is a joke. |
|
H****y
发帖数: 2992 | 5
（又被点名了）我也没出过专业书，只能瞎猜了。
如果sample chapters要半年以内提交，那你说的几个提高英语写作的渠道没有这么快
啦（当然长久来说还是要做）。不过还是有办法circumvent这个问题。
首先，不要把“吸引人”当做目标，这样你就很难下笔了。应该把clarity当成首要目
标。要讲明白，有多种方式，
1，想像你在和一个人对话。比如介绍牛顿第一定律，不要上来就说： An object at
rest stays at rest and an object in motion stays in motion with the same
speed and in the same direction unless acted upon by an unbalanced force. 我
们永远不会这么和人说话。应该这样说：我现在要讲的东西，是关于什么的。在这个定
律出现之前呢，人们的认识是怎样错误的。这个定律和传统的不一样，怎么个不一样法
来。。。
2， 多举例子（越简单常见的越好）。多做类比（写书和生孩子一样的地方在于。。。
），类比可以把人们不熟悉的概念通过已经熟... 阅读全帖 |
|
发帖数: 1 | 6 能结婚生子的，说明这女人味不足就不是问题。当然也许男主老谋深算能掩饰得住，不
过据我对男人的了解，应该不会这么有心机。男人能走进婚姻的都是自己还是很乐意的
，婚后出现了unbalanced的时候，那是后话。 |
|
y*****j
发帖数: 12 | 7 I married an America. I feel he always waste money in everything. for
example, we have 2 ipods,1 pad, 8 desktops at home. One of the ipod has a
little black dot on the screen, he bought Andriod nexus 10 last December
without telling me. He also likes to buy expensive pants and shoes around
100$ each pair himself. He always think he is rich and he deserves good
stuff. He earns around 80k per year, I earn 60k, we have two kids and one
large house loan, we hardly have a few thousand dollars savings... 阅读全帖 |
|
F******k
发帖数: 197 | 8 多谢.
不过如果这个线是unbalanced(mono), PG58话筒的balanced输出是不是浪费了呢?
准备找一个接受balanced输入的mixer. 不知道vocopro DA1000的MIC输入是stereo还是
mono. |
|
a*****s
发帖数: 2663 | 9 DA1000 mic input jack 是 TRS的，就是说理论上你可以feed stereo signal（2
unbalanced L ＋ R）或者 1 balanced mono signal。
一般的mic都是mono的，ok mixer会给你split的，不然只有一个喇叭响谁还买呢？你要
想真正的stereo mix的话，你需要两个mic，和一个stereo mixer（e.g. scm262）。不
过我怀疑DA1000可能不知道怎么handle stereo signal，大概就是（L－R）给你消音了。
所以你要是想不浪费balance输出，买一XLRF to 1/4TRS cable就好了。 |
|
a*****s
发帖数: 2663 | 10 一直奇怪这家所谓professional的东西都是谁在消费，都是unbalanced input，连个
phantom power都没有。
helps
for |
|
|
l******o
发帖数: 1550 | 12 从TS unbalanced，用TRS线连到TRS balanced的音箱接口没什么不妥吧 |
|
c******p
发帖数: 22 | 13 再请教版主和杨大侠，如果mixer的输入是unbalanced 1/4 TRS. 买什么样的线合适？
大约长度是15feet。
1. XLR to XLR with XLR to 1/4 TS adapter
或
2. XLR to 1/4 TS |
|
k***y
发帖数: 5 | 14 本人是菜鸟，打算装一套Karaoke系统。家里已经有电脑，电视和功放系统。看了版上
的一些相关文章，还是有些疑惑，希望各位xdjm指点一下。
首先是关于效果，下面那一套组合更好呢？
I. PG58 (mic) + Behringer 1002 (mixer)
II. PG58 (mic) + VocoPro DA 1000
有些文章提到两个mixer的区别之一是banlanced和unbalanced输入的问题，没有什么概
念。
另外，如果选一，Behringer 1002和Behringer 802之间有什么区别呢，只是输入少两
个么？
最后一个问题，也是比较头疼的一个，两个方案对应的calble是什么呢？我根据看到的
一些文章列出一组选择，但不知道是否准确，如果有错误，请大家指正。
I. PG58 (mic) + Behringer 1002 (mixer)
from mic to mixer: XLR to XLR, from PC to mixer: 3.5mm to RCA (还是XLR??),
from mixer to opam: XLR to RCA (or RCA t |
|
r****x
发帖数: 1250 | 15 谢谢回答！现在用的话筒确实是UNBALANCED TS线。
是不是光说1/4就是指BALANCED（TRS）？
is |
|
r****x
发帖数: 1250 | 16 我也觉得REC口出来可能不对。但是我后来试过从XLR TO RCA的输出方式，好象没有
帮助。
话筒声小是不管音乐声怎样，把话筒音量调到最大还是觉得声小。用过另外一个还行的
话筒，同样的问题。朋友好象提过他用了一个巨烂的话筒声音大点。忘了用的什么话筒
线了。
我去查了一下，BMB说话筒输入应该是UNBALANCED（1/4 TS），MAIN OUT也是1/4 TS
（但也可以是XLR，如果MIXER是接到有XLR的放大器的话）。我想下一步我该试验从
MIXER到RECEIVER用1/4 TS TO RCA的方式，如果还是不行，那就不知道是什么问题
了。
的。 |
|
V*****n
发帖数: 893 | 17 it's good that you found out that main out 1 and mic inputs are unbalanced.
Generally, the build in mic preamp should have no problem bring the mic
signal to line level, which is the same level as the music input. here is
something you can try, but with caution.
try the following at your own risk!
First, remember what's your normal volume on your receiver (e.g., -30db)
second, you set the mic volume close to max, but not max.
third, start singing karaoke with a familiar song at a comfortable lev |
|
f****i
发帖数: 20252 | 18 会有麻烦的地方可能在这里：
Oversampling ratio的选择跟reconstruction filter的设计，不同的设计成本要差好
几倍
balanced/unbalanced 结构选择，影响power supply rejection ratio
volumn control怎么加
PA的种类和工作点选择，class AB的PA太省电的话会影响线性
喇叭的搭配
the
If |
|
S*******E
发帖数: 2498 | 19 是每个声道unbalanced的接口只有一个，下图 |
|
|
g*****o
发帖数: 1637 | 21 mixer说明书上说
audio input:
connecters: cinch, unbalanced
是不是就是rca的口？ |
|
|
f*a
发帖数: 3132 | 23 adam600吧，当时店里听了一圈，选的。
dac不必要，这个板上组织过团购。
mixer没用过其他的，所以不知道。混响效果还行，不过比软件做出来的还是差点。
一般有源音箱会有balance和unbalanced的接口，balance接地成本高，适合长距离走线。
设备越好，对唱歌的要求更高。建议进个手持电容麦，细节很好。 |
|
E*******e
发帖数: 57 | 24 从AM&S Technical Support (AmericanMusicandSound)那得到了答复:
Q: there are 3 kinds of outs: Record Out, Monitor Out, Main Mix Out. I want
to connect to my receiver, can you please generally tell me the basic
difference between these Outs and which one shoule be the best sound qulity?
A; They are all the same sound quality, though TRS and XLR outputs are
balanced, whereas RCA outputs are unbalanced, so you may notice a loss of
signal level using the RCA outputs.
The record out is a bus that sends any ch... 阅读全帖 |
|
l*********w
发帖数: 472 | 25 折腾好了～是cable的问题，vocopro DA1000的mic接口是1/4插头 unbalanced。一般买
的都是balanced，所以这个地方要注意。希望有其他新手也能注意到这个问题～ |
|
s*l
发帖数: 10 | 26 "Myth #5: The world is now on the cusp of synchronous recovery in the global
economy. The hope here, of course, is that an unbalanced US-centric world has
now been rebalanced, thereby providing the global economy with a broader
platform of support. That, of course, would come in quite handy in the event
of a shortfall in the US economy. On the surface, a broadening out of the
global growth dynamic offers encouragement in this regard -- underscored by
our estimates of 5% growth in the Japanese ec |
|
c**********l
发帖数: 606 | 27 only have 1/4 of my portfolio migrated into PP. still unbalanced and
relatively heavy on stock. today is another evidence that PP has the built-
in black-swan-proof, and how unpredictable this crazy world is. |
|
m*****g
发帖数: 226 | 28 是否可以这样递归
如果n node form T(n) binary trees，
T(n+1) 便在T(n)上面加一个。
从most unbalanced binary tree, n nodes, n possible positions to add
到most balanced binary tree, n nodes, 0 possible positions to add
是不是T(n+1)=T(n)+(n-1+n-2+...+1)
这样搞？ |
|
p********7
发帖数: 549 | 29 1.开放式问题,有些网站每天只允许有限次访问,怎么抓取网页使得索引尽量全面和新鲜
？？
2.在C++文件中只declare class A, 但不以任何方式define class A, 是做什么用
3. Estimate the time cost of transfering 1M of data from one memory stick to
another.
- when the data in memory is sequentially stored; - when the
data in memory is stored in blocks; - does the bus width matter
here?
4.How to transform a unbalanced tree into balanced tree?
第2个题我想的是保留A的名字，以后再定义
第四个题我想的是先算每个节点的blance factor然后再调整，具体怎么调整就不知道了。
第四个题还想到一个办法是转成双链表，然后再转balanced tre |
|
B******l
发帖数: 262 | 30 12.4 Imagine you have an unbalanced binary search tree. Design an algorithm
which creates a linked list of all the nodes at each depth (eg, if you have
a tree with depth D, you’ll have D linked lists).
答案如下:
struct LLNode {
LLNode(Node* t, LLNode* n) : next(n), tree(t) {}
LLNode* next;
Node* tree;
};
struct ListOfLists {
ListOfLists() : next(NULL), data(NULL) {}
ListOfLists* next;
LLNode* data;
};
ListOfLists* TreeLinkedLists(Node* root) {
ListOfLists* results = new ListOfLists();
... 阅读全帖 |
|
z*s
发帖数: 209 | 31 I mean the former one. given a bunch of numbers and create such a bst (
unbalanced).
My method is to use a regular recursive bst node insertion http://en.wikipedia.org/wiki/Binary_search_tree#Insertion, set numOfDescendents of the newly added node to 1 and increment numOfDescendents of the nodes along the insertion path by 1. |
|
g*********s
发帖数: 1782 | 32 with unbalanced bst, you can't query the median in O(lgN). so the bst you
created doesn't meet the requirement of (2).
for creation of a balanced bst, there's extra work to do. that's why i say
it's not straightforward.
http://en.wikipedia.org/wiki/Binary_search_tree#Insertion, set
numOfDescendents of the newly added node to 1 and increment
numOfDescendents of the nodes along the insertion path by 1. |
|
l*****g
发帖数: 685 | 33 No, it's O(logN) because it only updates the nodes on the path from root to
the insertion point.
If you're talking about worst case, yes, O(n) is possible in case the tree
is extremely unbalanced. |
|
i**********e
发帖数: 1145 | 34 Please don't get confuse :)
I don't know what you mean by min leaf node and max leaf node. Is it the
node that has min and max values? If it is, then your definition of balanced
bst is wrong.
The correct definition for a balanced bst is:
A tree whose subtrees differ in height by no more than one and the subtrees
are height-balanced, too.
When you subdivide the array and construct the bst top-down, you are
essentially maintaining the following invariant in each subdivision:
|#nodes in left subtre... 阅读全帖 |
|
S**I
发帖数: 15689 | 35 ☆─────────────────────────────────────☆
gzou (gzou) 于 (Thu May 12 02:26:35 2011, 美东) 提到:
马上就要G on site了，
求祝福。
下面是从本版收集到的Google的试题，便于大家查询。
申明：有的附带有解释说明的，也来自于本版或者网络，大家自己看， 不保证真确
http://www.mitbbs.com/article_t1/JobHunting/31847453_0_1.html
本人ECE fresh PhD，背景是电路/EDA，跟G业务基本没什么关系
同学内部推荐的，很简单的一次电面就给了onsite
题都不难，但是自己没把握好机会，出了一些小bug。
总的感觉，出错就是硬伤，宁可从最简单的算法写起，也不能出错。
电面：
1，Skip list， http://en.wikipedia.org/wiki/Skip_list
写code实现struct skip_list * find(struct skip_list *head, int value)
2，sorted array... 阅读全帖 |
|
S**I
发帖数: 15689 | 36 ☆─────────────────────────────────────☆
gzou (gzou) 于 (Thu May 12 02:26:35 2011, 美东) 提到:
马上就要G on site了，
求祝福。
下面是从本版收集到的Google的试题，便于大家查询。
申明：有的附带有解释说明的，也来自于本版或者网络，大家自己看， 不保证真确
http://www.mitbbs.com/article_t1/JobHunting/31847453_0_1.html
本人ECE fresh PhD，背景是电路/EDA，跟G业务基本没什么关系
同学内部推荐的，很简单的一次电面就给了onsite
题都不难，但是自己没把握好机会，出了一些小bug。
总的感觉，出错就是硬伤，宁可从最简单的算法写起，也不能出错。
电面：
1，Skip list， http://en.wikipedia.org/wiki/Skip_list
写code实现struct skip_list * find(struct skip_list *head, int value)
2，sorted array... 阅读全帖 |
|
l*********8
发帖数: 4642 | 37 worst case of binary search ( O(n) ) happens on extreme unbalanced binary
tree but not in this case. Here we do binary search on an array. It costs
at most log2(n) comparisons. |
|
s**********z
发帖数: 61 | 38 如果树是unbalanced，一条线，为什么DFS 空间是lgn? |
|
l****p
发帖数: 397 | 39 嗯，没错，这是worst case。面试官问我balanced和unbalanced有什么影响时我居然答
不上来，又一个失分点啊 |
|
h****n
发帖数: 1093 | 40 恩 疏忽了
如果树是unbalanced，一条线，为什么DFS 空间是lgn?
★ Sent from iPhone App: iReader Mitbbs Lite 7.56 |
|
G****A
发帖数: 4160 | 41 都是大家熟悉的题
Q1, nth Fibonacci number. 要求尽可能多的解法。
follow-up, 每种解法的time/space complexity (要求function call的stack
overhead也看做space complexity).
Q2: c++基本概念。static, reference vs pointer, what is OOD, ...
Q3：列举并比较你常用的几种design patterns的作用和特点。
Q4: tree traversal, 要求level by level,按从底向上的顺序。同个level从左到右。
当我说要用DFS实现print by level的时候，此senior engineer先说“How could you
possibly print in level-order using DFS?”
解释完之后，senior engineer说：“ In the worst case, this will have
quadratic run time (if the tree is unbalanced)... 阅读全帖 |
|
c********t
发帖数: 5706 | 42 嗯,多谢。
the best situation is balanced tree, O(n) 2N
the worst is unbalanced list like tree, O(n^2)
最鄙视那个senior，这种张嘴就拍，自以为是的人了。 |
|
r*******e
发帖数: 7583 | 43 不算咯应，unbalanced tree worst-case就是退化成list，这个算法书上一般都讨论的 |
|
I*******x
发帖数: 20 | 44 去年我找工作的时候发现板上针对data scientist，machine learning engineer面试
题总结很少，所以尽量申请了很多公司面试相关职位，想看看行业里这个方向都在问什
么。有幸去过不少地方面试，现在把那些题目整理整理（全部来自Amazon, Microsoft,
Yelp, Pinterest,
Square, Google, Glassdoor, Groupon的电面和onsite)，希望能帮助在找相关工作的
同学们。
题目写的简略，请大家见谅
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
1. Given a coin you don’t know it’s fair or unfair. Throw it 6 times and
get 1 tail and 5 head. Determine whether it’s fair or not. What’s your
confidence value?
2. Given Amazon data, how to predict which users are going to be top
shoppers ... 阅读全帖 |
|
I*******x
发帖数: 20 | 45 去年我找工作的时候发现板上针对data scientist，machine learning engineer面试
题总结很少，所以尽量申请了很多公司面试相关职位，想看看行业里这个方向都在问什
么。有幸去过不少地方面试，现在把那些题目整理整理（全部来自Amazon, Microsoft,
Yelp, Pinterest,
Square, Google, Glassdoor, Groupon的电面和onsite)，希望能帮助在找相关工作的
同学们。
题目写的简略，请大家见谅
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
1. Given a coin you don’t know it’s fair or unfair. Throw it 6 times and
get 1 tail and 5 head. Determine whether it’s fair or not. What’s your
confidence value?
2. Given Amazon data, how to predict which users are going to be top
shoppers ... 阅读全帖 |
|
p*****9
发帖数: 273 | 46 被放过一次鸽子 重新安排之后有人打进电话 烙印
（按时间顺序）
1. 他介绍组
2. 介绍我自己
3. 会不会A, 会不会B，会不会C。 答：C不熟。要求用C写几个操作。
4. 要求设计一个分类器。数据是10M个点，每个点15k的feature，输出时0/1。 阳性样
本非常少。围绕这这个项目，问了很多问题
1）怎么处理这种unbalanced的数据
2）怎么给数据降维
3）哪些分类器可以选择
4）logistic regression的相关问题
5）decision tree的相关问题
6）random forest的相关问题
7）confusion matrix及相关指标相关问题
8）分布式logistic regression计算的相关问题 如何online
整个面试过程还是蛮中规中矩。烙印问的题也大多是基本题。有的知道，有的不清楚他
也给来些提示 有一点奇怪的就是 有时候他竟然自问自答 刚把题目问了你还没来得及
回答 他就把答案说了 不知道是不是在黑我 最后说一两周之后给结果 不知道结果怎么
样 |
|
m********a
发帖数: 128 | 47 第一问怎么答啊？
怎么处理这种unbalanced的数据？ |
|
d********m
发帖数: 101 | 48 Given an unbalanced binary tree, write code to select a node at random (each
node has an equal probability of being selected). |
|
e***a
发帖数: 1661 | 49 supply and demand are unbalanced in the job market. |
|
|
