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句形都是sb. put \lay emphasis\stress on sth.许多地方都可以通用,意为:强调,着重。 区别:emphasis侧重于强调其重要性...
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投了欧洲signal processing，这是结果，请各位大牛们说说是该大修重投还是改投？
View Letter
Date:& & & & 21 Sep 2015
From:& & & & &Signal Processing&
Subject:& & & & Your Submission SIGPRO-D-15-00646
Ms. Ref. No.:&&SIGPRO-D-15-00646
Title: Fast FOCUSS algorithm and its applications in space-time clutter spectrum estimation
Signal Processing
Dear Prof. Tao,
Reviewers' comments on your work have now been received.&&You will see that they are advising against publication of your work.&&Therefore I must reject it.
For your guidance, I append the reviewers' comments below.
Thank you for giving us the opportunity to consider your work.
Yours sincerely,
Stefan Werner
Handling Editor
Signal Processing
********************************************************
Reviewers' comments:
: The reviewers comment that the paper has several drawbacks relating to both the quality of the technical content as well as novelty of the results. I agree with their views. Hence, I have to make a reject decision on this manuscript version.&&
Reviewer #1: First of all, the paper needs a complete overhaul as far as language goes.
I do not understand the contribution of the paper. You only change the least squares solver in FOCUSS from psudoinverse to SOR. You must be knowing, no one computes the SVD for FOCUSS, people usually use LSQR type algorithms which gives decent results in very few iterations. SOR is just another method (albeit more naive) compared to LSQR to solve a linear inverse problem. So what? This work is of no significance as far as signal processing is concerned.
The proposed work lacks novelty. It would be an OK project for a senior UG course on numerical linear algebra.
Reviewer #2: ---------
The paper presents the development and testing of a modification to the well-known FOCUSS algorithm.
While the improvements do not reduce the largest asymptotic big-Oh exponent, they modify the dependence
on n and m, and are shown to provide significant run-time savings on both simulated and real data
without loss of fidelity.
There are some minor language issues, but in general the paper is well-organized and well-written,
and should be of interest to a fairly wide audience across several fields. I recommend publication
with some minor edits.
-----------------
Primary comments
-----------------
p14.l48 and p15.l31: How was the relaxation parameter of sigma=0.2 determined? Was it determined
experimentally over several runs or was this the only value tried, purely as a guess or example?
p15.37: I have to disagree that the FOCUSS methods show the scatter of clutter better than TNIPM.
They appear to be similar, just more focused. Perhaps with fewer iterations the result would look
closer to what is obtained from TNIPM?
Please provide the runtime for SMI in table 4 as well.
---------------
Minor Comments
---------------
I would like to suggest the following, as additional examples of the use of FOCUSS in bioelectromagnetic
inverse problems (p1.l49), which are journal rather than conference articles:
P. H. Schimpf, H. Liu, C. Ramon, J. Haueisen, &Efficient Electromagnetic Source Imaging with Adaptive
Standardized LORETA / FOCUSS,& IEEE Transactions on Biomedical Engineering, Vol. 52, No. 5, pp. 901-908, 2005.
P. H. Schimpf and H. Liu, &Localizing sources of the P300 using ICA, SSLOFO, and latency mapping,&
Journal of Biomechanics, Biomedical and Biophysical Engineering, Vol. 2, No. 1, pp. 1-11, 2008.
The paper could use a grammer review, although the problems I saw were minor and don't detract from
understandability. As an example, here are a few problems I noted from the first few pages, before I stopped
noting such things:
p2.l26: larger s.b. large
p2.l34: &...consumption of runtime will be very much...& is awkward and unnecessarily verbose. Something simple
like &...runtime will be large.& should suffice. Also, some readers might also complain that large is relative and
so qualitative absolute judgements are to be avoided. In other words, it is probably better to simply state what
part of the algorithm represents the largest portion of the computational load, which would avoid judging it to
be &large& without any reference as to what is &large& and what is not.
p2.l47: I believe you meant &not reversible& or &irreversible& rather than &not irreversible& (which is a double
negative).
p2.l54 mainly s.b. main
p3.l8: in this case &the simulated& s.b. just &simulated&
Reviewer #3: -------------------
OPENING STATMENT AND REVIEWER COMMENTS:
The authors propose a &Fast FOCUSS& method to reduce the computational complexity of the orginial FOCUS method. This improvement is achieved by solving the linear system of equations, required in the original FOCUSS method, more efficiently.&&The only novelty in the paper is to try and solve the linear system of equations more efficiently. Solving a system of linear equations is well researched problem with many good algorithms. Even though the authors use&&a particular form of&&(A,B)^+ to reduce the computation of the pseudo-inverse, the resulting novelty, in the reviewers opinion, is still quite small.&&
1. To call this a &Fast FOCUSS algorithm& is misleading and does not do justice to the original method. Firstly, your work does not propose any new algorithm as such, i.e., there is no new idea. The algorithm is exactly the same as the original FOCUSS method while the only difference in your work is to make one step of FOCUSS method to run faster.&&
2. The reviewer does agree that solving large system of linear equations can be quite challenging. But, there are already so many efficient methods out there that one can choose from. For example, the authors in&&reference&&use a conjugate-gradient method. Ofcourse, they consider only the real case while in your case, you have a complex system of equations. Now, the authors make the claim that the conjugate gradient method cannot be applied to the complex case. Now this is not entirely correct. There are complex-versions of the conjugate gradient method. Please see the paper:&&&A TAXONOMY OF CONJUGATE GRADIENT METHODS& by STEVEN F. ASHBY, THOMAS A. MANTEUFFEL, AND PAUL E. SAYLOR, VOL. 27, No. 6, pp. , DECEMBER 1990, SIAM JOURNAL ON NUMERICAL ANALYSIS.
3. The reviewer would expect the authors to first investigate the following: Check and see if there are complex-versions of the conjugate gradient method. How does the complexity of such methods compare with your proposed psuedo-inverse based form of (A,B)^+ plus the succesive over relaxation (SOR) method. Are they the same or is your proposed method in combination with SOR better ?&&All the more in general how is the SOR method in comparison with the conjugate-gradient method (assuming a complex version exists) ?
------------------
RECOMMENDATION:
The major concern that the reviewer has with this work is the lack of sufficient novelty. There is not enough novelty in this work. If the authors can propose a completely new method of solving a system of linear equations then the work can probably be accepted. Otherwise, by just using well-known standard methods for solving a system of linear equations does not render any novelty to this work.&&Also, the reviewer believes that more investigation into complex-versions of the conjugate-gradient methods needs to be done by the authors. The authors then need to make a comparison between these complex-versions and the SOR-based method.&&
Overall, the reviewer recommends a reject.
-----------------
MINOR COMMENTS:
1. In equation (11), omega_i^k are not defined ? what are they ?
2. The derivation of equation (15) is not clear to the reader and can be confusing. You could rewrite the derivation from (13) as follows:
& &&&Introduce a new matrix W_{1k} = V_{1k}P&&where W_{1k} = . Thus, we have&&(V_{1k})^+ = P^{+}(W_{1k})^+ = P (W_{1k})^+ =&&P^+.
3. In the paragraph following equation (16), what is X_{1k} ? Where is it defined ?
4. In section 2.2.2, what is A_{k} ? where is it defined ?
---------------------
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Copyright 2015, Web3389. All rights reserved.Spanish Grammar drill
Either 'ser' or 'estar'.
Spanish has no exact single equivalent of the English verb to be.
For its wide range of meanings and uses Spanish employs the verbs ser and
estar as well as several other verbs and special constructions.
The ser / estar drills in this page deal with cases in which
the choice between these verbs does not depend on context: only one
of the verbs can be used to form grammatically correct sentences.
For cases when either one of the two verbs can be used, albeit expressing
different meanings, see the page 'Ser' or 'estar' according to
Question #1 -
en el cine.
1 valid answer
Question #2 -
el cuarto de Pedro.
1 valid answer
Question #3 -
en el segundo d&a de sus vacaciones.
1 valid answer
Question #4 -
las cinco de la tarde.
1 valid answer
Question #5 -
(2| est&aacuten
estudiando.
1 valid answer
Question #6 -
Las sillas
de madera.
1 valid answer
Question #7 -
Tres m&s cuatro
1 valid answer
Question #8 -
(2| estamos
profesores.
1 valid answer
Question #9 -
de San Francisco.
1 valid answers
Not a valid choice. Improper choice of verb for expressing location.
Correct! Proper choice of verb for expressing location.
Estar is used to express location of something tangible (a person,
object, or place), i.e. to state where the subject is. This location may be
for example: 'El est& en el segundo a&o de sus estudios'
('He is in the second year of his studies').
Correct! Proper choice of verb for identifying or classifying a given subject.
Ser is used to link the predicate to the subject and express who or
in particular, to express occupation or status.
Not a valid choice. Improper choice of verb for identifying or classifying a given subject.
Not a valid choice. Improper choice of verb for expressing location.
Correct! Proper choice of verb for expressing location.
Estar is used to express location of something tangible (a person,
object, or place), i.e. to state where the subject is. This location may be
for example: 'El est& en el segundo a&o de sus estudios'
('He is in the second year of his studies').
Correct! Proper choice of verb for expressing time.
Ser is used to express time.
Not a valid choice. Improper choice of verb for expressing time.
Not a valid choice. Improper choice of verb for the 'present progressive' form.
Correct! Proper choice of verb for the 'present progressive' form.
Estar is used for the present progressive form. Notice that Spanish
uses the progressive much less than English, only for a truly progressive
Correct! Proper choice of verb for characterizing a given subject.
Ser is used to characterize a given subject by citing its properties,
qualities, and attributes. In particular, to express origin, material make-up
or possesion, mostly with the use of the preposition de.
Not a valid choice. Improper choice of verb for characterizing a given subject.
Correct! Proper choice of verb for equating mathematical identities.
Ser is used to express mathematical identities. While English uses the
third person singular, Spanish uses the third person plural: 'Two and two is
four' vs 'Dos y dos son cuatro'
Not a valid choice. Improper choice of verb for equating mathematical identities.
Correct! Proper choice of verb for identifying or classifying a given subject.
Ser is used to link the predicate to the subject and express who or
in particular, to express occupation or status.
Not a valid choice. Improper choice of verb for identifying or classifying a given subject.
Correct! Proper choice of verb for characterizing a given subject.
Ser is used to characterize a given subject by citing its properties,
qualities, and attributes. In particular, to express origin, material make-up
or possesion, mostly with the use of the preposition de.
Not a valid choice. Improper choice of verb for characterizing a given subject.
Grammatical notes for the drills in this page.
Spanish has no exact single equivalent of the English verb to be.
For its wide range of meanings and uses Spanish employs the verbs ser and
estar as well as several other verbs and special constructions.
The ser / estar drills in this page deal with cases in which
the choice between these verbs does not depend on context: only one
of the verbs can be used to form grammatically correct sentences.
For cases when either one of the two verbs can be used, albeit expressing
different meanings, see the page 'Ser' or 'estar' according to
The items covered are:
1)- The choice of verb for identifying or classifying a given subject.
Ser is used to link the predicate to the subject and express who or
in particular, to express occupation or status.
2)- The choice of verb for equating mathematical identities.
Ser is used to express mathematical identities. While English uses the
third person singular, Spanish uses the third person plural: 'Two and two is
four' vs 'Dos y dos son cuatro'
3)- The choice of verb for characterizing a given subject.
Ser is used to characterize a given subject by citing its properties,
qualities, and attributes. In particular, to express origin, material make-up
or possesion, mostly with the use of the preposition de.
4)- The choice of verb for expressing time.
Ser is used to express time.
5)- The choice of verb for the 'present progressive' form.
Estar is used for the present progressive form. Notice that Spanish
uses the progressive much less than English, only for a truly progressive
6)- The choice of verb for expressing location.
Estar is used to express location of something tangible (a person,
object, or place), i.e. to state where the subject is. This location may be
for example: 'El est& en el segundo a&o de sus estudios'
('He is in the second year of his studies').
Glossary for question #1 -
padre: father
cine: movie theater
Glossary for question #2 -
cuarto: room
Glossary for question #3 -
segundo: second
sus: their
vacaciones: vacations
Glossary for question #4 -
las cinco: five &clock
tarde: PM, afternoon
Glossary for question #5 -
Ellos: They
estudiando: studying
Glossary for question #6 -
sillas: chairs
madera: wood
Glossary for question #7 -
Tres: Three
cuatro: four
siete: seven
Glossary for question #8 -
profesores: professors
Glossary for question #9 -
de San Francisco: from San Francisco}