Mark Alen - user overview - MetaOptimize Q+A

Mark Alen

1,133

karma

Registered user
member since	Jul 02 '10 at 21:20
last seen	Mar 05 at 18:14
user's website	http://twitter.com/siah

I am a PhD candidate at UC Berkeley

I sometimes work as an independent consultant in the fields of machine learning, data mining and NLP

linux_jvm@yahoo.com

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21 Questions

1

votes

2

answers

690

views

Simple distributed and approximate linear regression

Mar 07 at 06:39 Alexandre Passos ♦19012●44●215●335 (asked by Mark Alen1133●23●35●42 )

linear-regression mapreduce

0

votes

1

answers

718

views

Rating inference problem

Jan 03 at 20:34 Robert Layton1520●10●23●37 (asked by Mark Alen1133●23●35●42 )

sentiment-analysis

0

votes

1

answers

578

views

Conditional Expectations on Graphical Models

Oct 29 '11 at 15:42 Alexandre Passos ♦19012●44●215●335 (asked by Mark Alen1133●23●35●42 )

graphical-models

0

votes

3

answers

684

views

Rating inference using SVM or similar models

Oct 18 '11 at 22:45 Alexandre Passos ♦19012●44●215●335 (asked by Mark Alen1133●23●35●42 )

featurization

1

votes

2

answers

975

views

GPU vs. CPU and Machine Learning

Aug 25 '11 at 16:28 Brian Vandenberg644●19●34●44 (asked by Mark Alen1133●23●35●42 )

gpu

1

votes

2

answers

936

views

Going from bag-of-words to better language models

Jun 15 '11 at 04:46 Georgiana Ifrim151●4●4●14 (asked by Mark Alen1133●23●35●42 )

bag-of-words natural-language-processing regression

1

votes

2

answers

2k

views

Automatically selecting the number of topics in LDA

Mar 29 '11 at 09:19 lily16●1●1●4 (asked by Mark Alen1133●23●35●42 )

lda topic-models

1

votes

2

answers

2k

views

Well Tested Latent Dirichlet Allocation in Python

Mar 24 '11 at 09:22 Radim296●6●9 (asked by Mark Alen1133●23●35●42 )

python lda

1

votes

2

answers

579

views

Scientific literature on question answering algorithms

May 17 '11 at 14:43 horsh1 (asked by Mark Alen1133●23●35●42 )

question-answering

1

votes

2

answers

3k

views

How does IBM Watson work?

Feb 15 '11 at 13:12 karpathy161●3●6●9 (asked by Mark Alen1133●23●35●42 )

qa watson

1

votes

1

answers

741

views

Should we use "Function word" instead of "Stop word"?

Jan 21 '11 at 08:30 Alexandre Passos ♦19012●44●215●335 (asked by Mark Alen1133●23●35●42 )

nlp

1

votes

3

answers

1k

views

LDA toolbox for MATLAB

Jan 11 '11 at 16:14 Aengus Robinson215●5●11●14 (asked by Mark Alen1133●23●35●42 )

lda matlab

2

votes

3

answers

1k

views

Good tutorial on feature selection

Jan 24 '11 at 08:11 Lucian Sasu453●16●25●32 (asked by Mark Alen1133●23●35●42 )

feature-selection regression

0

votes

1

answers

981

views

Using SVM instead of logistic regression

Dec 30 '10 at 02:24 Liangjie Hong226●9●17●20 (asked by Mark Alen1133●23●35●42 )

supervised-learning svm logistic-regression

4

votes

5

answers

2k

views

What are the pros and cons of using t-SNE

May 04 '11 at 10:49 Laurens van der Maaten751●3●12●18 (asked by Mark Alen1133●23●35●42 )

dimensionality-reduction t-sne pca

View all questions by Mark Alen

22 Answers

Stanford Feature Learning?

Stanford Feature Learning?

Python Alternative to AnyLogic?

How does one write math on this site?

Crowdsourcing solution: Amazon MTurk vs. Crowdflower

Visualization tools for large data sets

Visualization tools for large data sets

Visualization tools for large data sets

Best algorithms for clustering via keyword occurrence

What NLP problem would you tackle (and how) if computers were a million times faster?

Telling why something was ranked high (or why it was suggested to you) ?

Convex Optimization on the JVM

Method for evaluating a car sales model

Retrieving data from FIFA website

ManyEyes-like tools to generate word tree and phrase net viz?

Good programming abstraction to represent a Dataset

Large scale graph visualization

What are some good habits / methods for organizing large datasets?

How do I test a method (murmurhash) for generating random numbers?

What are the best resources to use when starting machine learning for an experienced programmer?

What is the best freely available face-detector implementation?

New to data mining - where to start?

56 Votes

56

0

50 Tags

nlp × 16
visualization × 16
data × 16
lda × 7
regression × 7
hadoop × 7
datasets × 6
gpu × 6
mapreduce × 6
corpus × 6

dimensionality-reduction × 5
t-sne × 5
pca × 5
logistic-regression × 4
nltk × 4
bag-of-words × 4
natural-language-processing × 4
pig × 4
cuda × 4
svm × 4

supervised-learning × 4
collocation × 3
matlab × 3
python × 3
feature-selection × 3
sparse × 3
watson × 3
featurization × 3
qa × 3
sparsity × 3

references × 3
linear-regression × 2
question-answering × 2
sparse-coding × 2
neural-networks × 2
unsupervised-learning × 2
java × 2
topic-models × 2
dataset × 2
code × 1

translation × 1
ranking × 1
sampling × 1
evaluation-methods × 1
programming × 1
retrieval × 1
freely-available × 1
database × 1
db × 1
community × 1

19 Kudos

● Prominent Question × 21
● Conspicuous Question × 21
● Well-Known Question × 21
● Appreciated Answer × 8
● Prized Question × 6
● Appreciated Question × 6

● Esteemed Question × 3
● Esteemed Answer × 2
● Cherished Question × 2
● Adulated Answer × 1
● Participant × 1
● Mentor × 1

● Inquisitive × 1
● Blue Pencil × 1
● Advocate × 1
● Cognoscenti × 1
● Revisionist × 1
● Guide × 1

● Adulated Question × 1

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