MaxDiff 分析儀是一個可選的分析程式，您登錄到您的 web
瀏覽器通過。每個登錄允許您上傳和使用最多 10 個單獨的 MaxDiff 專案。你必須上載的分數你估計得與您的
MaxDiff/Web 系統，或通過 CBC/HB MaxDiff 分析器不會從原始資料生成這些分數。
The MaxDiff Analyzer is an optional analysis program that you log
into through your web browser. Each login allows you to upload and
use up to 10 separate MaxDiff projects. You must upload scores
you've estimated with your MaxDiff/Web system, or via CBC/HB, as the
MaxDiff Analyzer does not generate these scores from raw data.
rescaling options (e.g. probability, 0-100 scale), with 95%
analysis for bundle optimization
The price for the MaxDiff Analyzer service is $400 per year
(allowing one username/password combination to access up to 10
projects). Payment must be made upfront. A maximum of a full year of
service may be purchased at this time.
TURF stands for "total unduplicated reach and frequency." It is
an optimization approach for finding a subset of items that "reach"
the maximum number of respondents possible. For example, the classic
problem is one of choosing which flavors of ice cream to stock in
the freezer at a grocery store. The grocer may decide that he/she
has limited space and can only include up to 8 flavors of ice cream
(out of 30 possible flavors). The grocer wants to maximize the
chance that shoppers will find a flavor that they like well enough
to buy in the freezer (where "like well enough to buy" means that
the preference score exceeds some threshold). If the respondent
encounters a flavor he/she likes in the freezer, the respondent is
counted as "reached." The problem isn't as simple as including the
eight most preferred flavors on average across the sample. Niche
flavors that appeal to segments of the population (and that can
increase total reach) would be overlooked.
For the ice cream example outlined above, the TURF procedure
examines all possible subsets of 8 flavors of ice cream (out of 30
total flavors), and for each set counts how many respondents are
"reached." The top sets of 8 flavors that maximize "reach" are
listed in the output with the percent of respondents reached shown
next to each.
The MaxDiff Analyzer provides three different options for assessing
"reach" in TURF:
First Choice: The item must be the respondent's top-scoring item to
"reach" the respondent.
Threshold: the analyst supplies a value, indicating a threshold
above which a respondent is counted as "reached." If any of the
items in the set exceed the supplied threshold, the respondent is
Weighted by Probability: this method assesses the quality of each
subset of items by setting its "reach" equal to the maximum
"probability of choice" for any of the items in the subset
(according to the logit rule). Intuitively, we are finding sets of
items that maximize the likelihood that respondents will choose at
least one of the items within the set.
The TURF program allows the researcher to specify that certain
combinations of features are prohibited from occurring within a set.
You can also force certain items to be included in sets.
If the TURF problem becomes too large to search in the tradional way
(exhaustive search) the software defaults to a very effective and
rapid shortcut heuristic called Stepwise TURF + Swaps.
Our Flagship Platform and General Interviewing Tool
SSI Web - Our flagship platform that includes a variety of
components for general interviewing (CiW), conjoint analysis (ACBC,
CBC, ACA, and CVA) and MaxDiff.
Choice-Based Conjoint (CBC) Related Products
ACBC - Adaptive Choice-Based Conjoint -
CBC - Choice-Based Conjoint
CBC Advanced Design Module
CBC/HB - Hierarchical Bayes estimation for CBC.
CBC Latent Class Module - Latent Class estimation for CBC.
MBC - Menu-Based Choice
Ratings-Based Conjoint Products
ACA - Adaptive Conjoint Analysis
ACA/HB - Hierarchical Bayes estimation for ACA.
CVA - Conjoint Value Analysis
CVA/HB - Hierarchical Bayes estimation for CVA.
Market Simulation Tools
ASM - Advanced Simulation Module
CCS - Client Conjoint Simulator
Maximum Difference Scaling (MaxDiff)
MaxDiff - Maximum Difference Scaling
MaxDiff Analyzer - Maximum Difference Analyzer
Other Analytical Tools
CCEA - Convergent Cluster & Ensemble Analysis.
HB-Reg - Hierarchical Bayes estimation for general regression-based