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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
* Y4 q( O" h: }) E% hto do-business 8 B" ]7 X5 B. r4 a
rt random 360
6 o) ]2 @+ ^8 t9 h* u fd 11 K; E& U# U4 E. V7 e4 I
ifelse(other turtles-here != nobody)[! E5 _4 @1 K1 w% ?7 D/ Z" r+ k/ u
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
; Z  R5 j# e' h% i5 L, F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& \+ q, H! D3 Y6 `5 n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 |% t; X7 r4 Q6 T   set [trade-record-one-len] of self length [trade-record-one] of self
& Z& d) X' n! R4 V; P+ d   set trade-record-current( list (timer) (random money-upper-limit))$ g6 Z9 K9 s  m/ x

1 R7 x' Q$ D3 F0 H" O问题的提示如下:
  }! l+ v2 S! w- R- S0 \- q( w  t* }6 M% _1 t
error while turtle 50 running OF in procedure DO-BUSINESS
2 _2 }. _9 d2 ?  called by procedure GO
/ {- V. [- r& C6 n0 g3 POF expected input to be a turtle agentset or turtle but got NOBODY instead.
: C: {* W3 s( {' O, S
(halted running of go)
! ~! f6 x0 b1 Y2 o" g. T1 L: q( K  T; N. R! q7 C& z/ n0 Q2 [# o  p
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~* P* i* C; J- U
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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参与人数 1仿真币 +30 +2 收起 理由
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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教" v2 \6 ~6 m; s; `
globals[" \1 {* P# [1 v( o5 R  Y% h
xmax
/ ^' e% E4 y. {+ U; Pymax
7 k" g) R0 Z# O, r; E! W* Y$ mglobal-reputation-list! w  P9 [( X0 }

3 e3 w0 P3 Q4 R. A) T;;
每一个turtle的全局声誉都存在此LIST
/ ~' A5 H% }1 Q* Rcredibility-list7 e/ b" g3 U/ q8 n7 P; Y" f# P  t" r
;;
每一个turtle的评价可信度- E, J- w7 J5 }) u& G2 h, `
honest-service9 ?( A8 [: d: D) r1 D4 N
unhonest-service& K0 |" ?8 j9 @$ I- z# w; Y( p
oscillation
% N) p. v! w7 v( ^( ]9 E* Yrand-dynamic
- ?3 d! n% |8 q]
: b1 j, t# t' J: X/ `( P! X, i; }4 a7 O5 ]+ o9 T+ f- h
turtles-own[
/ A  P1 e% f6 }( d* A( e* atrade-record-all6 Y: q! ^, ]4 m
;;a list of lists,
trade-record-one组成. f/ v* ~2 O% }1 |; b
trade-record-one. z# O, m. ?$ B* x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 i/ @. D/ v0 @5 y
- }5 i8 o* I3 l- M7 i
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
  W% m0 _+ I3 G7 S( e: A1 ltrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]6 y1 i( u7 C) H0 Q7 I) x4 s8 H1 E
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
- ^# k; k7 L$ E9 N! L' R  L/ ^# r: sneighbor-total5 |$ G/ G. ^# s
;;
记录该turtle的邻居节点的数目
# D; _8 Y% D5 t- Ktrade-time
, X) `; Q/ {  Z;;
当前发生交易的turtle的交易时间
1 q4 e! `( {  {appraise-give
6 U( _( y9 R+ l% `7 };;
当前发生交易时给出的评价
6 K6 p( u4 z( h0 J# |% `# `* \appraise-receive0 }, n% X& T/ q
;;
当前发生交易时收到的评价
* w0 \; e! |1 ]8 B& C) rappraise-time+ Y2 o- b, P/ {) y
;;
当前发生交易时的评价时间) ~8 e& J/ e* V" o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; v" ]- o# f' l( K( [7 p9 a/ t" Itrade-times-total7 t" V: T" t0 j8 V- k! h0 M
;;
与当前turtle的交易总次数/ j8 p: S1 {, L# q& O
trade-money-total
. p8 x' }0 W, D* L2 @7 m;;
与当前turtle的交易总金额+ f1 \! Y' l* T8 K- ?
local-reputation
; k9 t5 x/ q9 A2 A; [: b6 }0 Qglobal-reputation
6 c; l9 A7 I+ g, e9 j) ?, icredibility
8 A( R- V: M4 s. t;;
评价可信度,每次交易后都需要更新
/ r" C7 u, a; v6 _, s: \, c* ncredibility-all. D; b8 i1 X* y9 y1 |
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
3 I4 T, l1 k$ J9 H
) @6 J, |3 W' Y! \% A) k;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5+ V' e2 A, h! i2 b, W  V, C  l
credibility-one
; d! Q3 ?& d+ E$ f( V;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people! x% ~) y2 m0 B. H, Q- z& O
global-proportion
5 J, j8 p9 M- o( t3 M. lcustomer9 f, ?# J/ k! L2 `- J
customer-no- Y# x/ p' P( Q: j% k. U
trust-ok& j4 s8 w4 x  ?4 O% O
trade-record-one-len;;trade-record-one的长度
- N3 v" w! }2 A5 J7 M1 {]" u& U( w- L# l& |& V$ M8 a( Q, S
4 h% V# q% c. x8 q, F
;;setup procedure0 }  I6 v' s6 B, m* j; x* J
  ^0 V) w1 |( W4 F, l& D+ r+ E! l
to setup
% ~3 m, _: @; L( X0 ]+ o" o7 A- @: I! X
ca
! Q2 ]- K% w4 c; N0 O

. w" k  y. |+ A7 K) |  e0 M( [initialize-settings

# T" v' F  {, D) J( Z# {$ Z8 Z$ n% V0 z( x+ e4 M, |
crt people [setup-turtles]

  O' I/ g0 ]7 @% I2 A" U  z: i* C
1 r$ ?5 D, W0 B6 S4 U$ Oreset-timer
, }# U  ?  C& o. r, ~) O6 E5 ?% {

, m5 ^! {" Z/ X, x) wpoll-class
* s  @6 ~* i6 }3 @$ ]
- t3 b4 O5 \9 \! o  Z( g
setup-plots

/ e$ p' Y' G) m- n
1 G- H5 ?, D* d; _' pdo-plots
4 L3 P0 p, C! R; s% _
end( }8 C  v/ E/ \6 y" q

9 I' D+ o2 u% Q+ x4 a) [/ I. Lto initialize-settings
  H' w! V) R2 c! [  L2 G9 G
1 p  e4 U3 y2 o/ |set global-reputation-list []

* J( h6 @/ C8 g/ R6 T  j+ D) o4 {( A) E; ^0 z" e$ Y8 z
set credibility-list n-values people [0.5]

8 O( B# t4 b8 l/ g4 n
6 b8 t% q/ B% I0 L# A2 _- G- P1 Pset honest-service 0
2 d# w) M+ p) R7 Q7 S
4 I- i$ Z  r, w+ B
set unhonest-service 0

0 ]( l" W& R8 u2 w5 s: o. T9 P: J3 @) N7 Y' b
set oscillation 0

# Q6 r" f/ j$ a6 Y9 P' H) `
$ g& m0 C, y- ^  y# yset rand-dynamic 0
3 o6 r& f7 v5 k% F# P
end
. Y  P6 X, n/ j
1 i- R1 w' o+ R5 n* _* Pto setup-turtles , [3 Y9 t) [% ?& }  i% n# r
set shape "person"
! ]/ O9 _$ r7 ?3 Dsetxy random-xcor random-ycor% u9 z/ x& m4 L0 ^
set trade-record-one []
) R& L5 D$ ?( y. o0 b5 u, G% q
- H! S- Z7 L; {- C5 c
set trade-record-all n-values people [(list (? + 1) 0 0)] ' X- F* _! P8 K/ A, R( U$ N! N" o

8 [7 x7 `" k: Y# b; K2 L( Yset trade-record-current []9 T+ u1 M% j2 Q# ~5 u5 g0 f
set credibility-receive []) g( i$ ?& N3 f5 N/ l& \9 O
set local-reputation 0.55 j2 z! e5 ?' v: u" z$ y
set neighbor-total 0
4 _, \% u2 R* k& xset trade-times-total 0
" D4 A/ h, p# u6 ?; k; bset trade-money-total 0
3 o: j. F. K+ a( z" O* q+ Y7 _set customer nobody; g* b4 }# e& j% y# s
set credibility-all n-values people [creat-credibility]
. v0 K% [1 M  c( a( _# b# Jset credibility n-values people [-1]
4 P8 A" G" {( _! @get-color
8 A$ \0 `/ F! g; Y; Z9 R

( ~# Y+ q* X3 ^end
. s3 v# j. j: i* K# q7 f. `5 w2 g9 b! k, B
to-report creat-credibility4 j) x* Z3 y: N& z. U" a3 h
report n-values people [0.5]6 u$ p, y" K" |3 D; R2 z# B
end
, V7 \: G- G$ J; y! p: c6 }* G
: T/ i& _" _. s4 _/ tto setup-plots
& O5 ^. W% z  n( @9 k* h( h1 g5 h: m7 R- f
set xmax 30
: W" }; f2 h2 c; ]+ z' ^1 P3 t
0 `: P/ [$ G/ A" O* G+ g! n2 K
set ymax 1.0
/ L; @! {/ b& L/ Q4 g
  a# B) T2 s! {+ r5 e' N) Z1 z
clear-all-plots
$ \; l+ G" U9 I" L+ S1 C! v3 Y
$ F% V* l; L" |- P% D
setup-plot1

5 v' n+ {; N2 z9 |
8 m3 j0 V- M: X$ |2 Y& ]# w+ q4 w/ psetup-plot2
9 K" l: S+ V6 m, ~
* t' D& [' ?+ W; \( d% f
setup-plot3

* a2 Q6 g1 i" B$ Oend
3 a1 @; O" L# U) e6 }+ o9 i1 Y% P1 R
;;run time procedures
7 R6 F2 U0 k8 d; b  `2 L! o0 j8 G0 j
to go
6 e3 _9 I8 s& L0 n' @
, S3 j3 u. e' T; E$ pask turtles [do-business]
2 E+ W* {  r; P) ~; q9 X
end6 o& @( F, ^% d* F* Z. z& w

# g' g1 Y( E2 T# G3 F$ Fto do-business
. j9 V( N7 V& e( t" c8 A
% p6 B4 G4 D: w( F

* C- l* _$ A! e/ i9 H) l$ e" {; art random 360
4 \7 y2 g& U% C' F" ]
5 b/ B$ Z1 T- h0 Z  B/ N8 l
fd 1

+ |* l# \. E# e/ o; l. r5 c4 t% R- G8 [
ifelse(other turtles-here != nobody)[

: ?8 E0 B; [/ Q4 Z; \+ `$ q- c# x' O& J$ J
set customer one-of other turtles-here
9 F2 w, ~! d; f) X
, ]! \6 U- N. u1 p# [
;; set [customer] of customer myself

0 Z9 ]7 w3 z" N1 L% K4 J
5 ~' R" Z4 U; u$ k+ Fset [trade-record-one] of self item (([who] of customer) - 1)7 X, Z% f0 u" G' Z: F7 e" d
[trade-record-all]of self
  ]& t) m" o4 J% b2 |;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ g' O" N4 P( M9 k& n. k9 g

! B* h0 c! J1 i3 Hset [trade-record-one] of customer item (([who] of self) - 1)
4 P; p( j+ d, M% M& N[trade-record-all]of customer
+ S0 P' w1 T- f' m! L  Z
# l, [' D8 x# m5 c) U
set [trade-record-one-len] of self length [trade-record-one] of self
1 _+ W/ p9 t6 G% T6 {7 V0 M
; r# R! M9 Y8 W' h5 S& L
set trade-record-current( list (timer) (random money-upper-limit))
6 }' d4 m& m. ?
. f1 k; K+ ~; Q( M& n, e
ask self [do-trust]; F% j4 _7 E# p1 c- k+ S
;;
先求ij的信任度/ ~8 F$ T% j3 l4 \/ r1 w

6 K, _; @% l9 k" i" b6 P; dif ([trust-ok] of self)
" o1 o3 u5 J3 Z6 X: j! n;;
根据ij的信任度来决定是否与j进行交易[
% L) u9 `  I; r/ U8 ~  |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, ^9 a( z* I4 s9 g
5 v9 t) ~4 G5 ?+ S! _[
# }0 i& _1 ?, @/ S4 k

' P6 a: {' k, }) k2 m# \do-trade
8 o5 u* X1 V0 ~( s. c

) e& J* L* W/ m* I+ q8 fupdate-credibility-ijl
5 I0 }) U$ q: d4 p' k

; Q# X( ], o0 f* m; wupdate-credibility-list
( u# c1 W6 u5 U" |9 s/ ~1 z7 @

9 ?' W! [# G$ m8 `
5 F" J( B, S/ K7 w/ a& I) i) Q3 Pupdate-global-reputation-list
7 [% {! Z/ z( y+ b  n

7 W  m& ]8 k4 o0 Apoll-class

* z; W6 J: h$ W* B1 G
5 {# {0 W3 p  Vget-color
0 P3 W7 W# x- b& C5 n  y, G
" o, m! j# e; T% R" F- T4 u3 K
]]* u( T; j0 P& d; H

& _1 u" j2 i, l% Y;;
如果所得的信任度满足条件,则进行交易2 ?3 F4 S1 z5 L  E9 q: h

' R; D& r+ I% H% m& b[

1 {1 k. n! y6 h* C* X( ^: V: ^6 v: w8 V4 X, K/ ]4 k- `' b( \
rt random 360
* g, ?0 G' b& J9 J% A

) o, ^4 z& u8 E; d, Bfd 1

; v( a: l$ ?$ A5 I, B3 @* a( Y+ n2 x* b- v; y1 F8 K$ i
]

) `6 p2 @9 ?) d( K! Y! f. p
* H6 L2 |$ m; ?/ J' L# \- N# oend
$ ^6 y  E7 A: R9 d. C' R% O3 a
( P, m1 M0 E5 J1 E" q; i
to do-trust
/ [! }: G! t# |6 u: D1 p) i3 Fset trust-ok False
1 r1 y4 |) h' g9 |' p1 O5 h0 ?# h5 {5 y: {9 p4 Z/ c

3 g' h) a) |2 m  P  A1 @let max-trade-times 0# u% I3 M1 k! B( t! j0 V" V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 k* l. B, i& g5 G; plet max-trade-money 0
. b! B7 Y  s' U; s4 f. ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( e% Y! ?4 J9 U! I: H& F( r( |! |let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% s- d3 U* Y* a* d- g/ e
4 E. z6 |; U8 g9 V1 n
$ L& K5 o" Y" R1 E
get-global-proportion
0 k, m1 i# R! o1 xlet trust-value
& C  K  x) I: {6 klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- O6 {1 j, l6 V0 D5 k6 {# i
if(trust-value > trade-trust-value)
, d4 U* g, R3 A7 u1 Z[set trust-ok true]
* W; t9 }7 w3 }) \end) f5 ?4 I2 Y% [( ?8 d% D- ^( @

2 E1 ~6 g! H- |; Y9 {to get-global-proportion
/ [% ~: L* K+ h4 U" nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 @, l5 j! q. V/ H- }- N[set global-proportion 0]: O+ ]% l  m4 D6 e/ d% H3 c$ w0 D9 o
[let i 0" x7 M0 }% o4 w9 J
let sum-money 04 o) o) p. C+ \
while[ i < people]- e0 ?: f' r- P4 x& O
[
! q9 w" E3 M( j+ }5 A/ jif( length (item i. ?( a: Q' p0 R  k/ c+ b( q) I7 @
[trade-record-all] of customer) > 3 )

. k! Y9 E( d) [[
! `* m( ?& U- R' i- `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 I# \! N8 t  ]: L& b# G& V9 A]
2 U: v( h/ l3 l4 P0 l- R- L]
) k0 }( f3 `- k% |( T- }let j 0
/ |/ {# i, }; j! F7 alet note 0! d0 p4 k) {  B- n6 k7 t) O
while[ j < people]
; q: w& Y9 h, [: A# B) }6 a3 [[
- @7 v& U4 L4 C9 y( r; ^7 }; Rif( length (item i. R1 J6 ^  s! k) |! M% N! \% \% A9 R. \
[trade-record-all] of customer) > 3 )

+ W5 F+ A% F5 B3 x) T/ X[/ t! Q- {: m1 p
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 E( j6 v' [' y1 u' t3 d# m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ }  \; q; K1 W) ^1 C) x/ g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 F+ i# q  _5 h$ T]
- |- {" j9 T- a3 z  {# o! `]
* ^9 P- r7 X8 sset global-proportion note
. X: V0 v5 `" T% _/ ]]; r, ^. X  m4 \8 _  j9 E8 ~# R  Y) |
end: |5 N6 C! V1 ]4 X4 b! C6 |- L& [

& `) L2 Q! H3 w8 |0 J- Ato do-trade
5 ~8 Y5 R3 `- }; i8 w1 W+ o;;
这个过程实际上是给双方作出评价的过程
8 n  D5 `# W( {- Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  r5 L  P0 X" }3 m6 N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 G% f! t- ?4 q( Z: {2 p7 o
set trade-record-current lput(timer) trade-record-current
# f  O$ ~) i! i; d5 N, X;;
评价时间
1 a: L/ d+ N; Z) ?+ u8 ~4 F4 x: kask myself [
1 j' O. p! r- N  ?( r. l9 Tupdate-local-reputation* l- A8 G8 t. y9 J2 l$ f
set trade-record-current lput([local-reputation] of myself) trade-record-current4 N2 u# h2 n4 U, e
]
: }1 [4 z' f; M/ n  ^/ nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: I. Y5 Q! k* F& V1 d5 ~6 m9 a. c;;
将此次交易的记录加入到trade-record-one
7 Y. F  e/ V. S2 D+ f$ |set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 }/ h5 J4 ]5 G( n/ Y/ _1 M; Clet note (item 2 trade-record-current )3 u* S( e+ r6 z' N, n
set trade-record-current$ A' D: e: z/ W$ E: S
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 O* q. F. x  y2 [( b: J
set trade-record-current% X7 F2 a( r% q7 H' v. H- _
(replace-item 3 trade-record-current note)$ p; @( l0 z8 k* i0 z4 \. ?6 c- _

3 y/ ^& ]/ M0 Z. z: c

* S( f4 O2 O) _2 Task customer [2 t% d1 L$ y( f5 m( `4 b
update-local-reputation
( j* c8 Z7 z3 X7 h+ vset trade-record-current) {6 g  Y& |: y) ?7 _% c
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ P; t) k6 p, _* o5 l3 @$ C]
  X8 Q  x( V; N, I: C& A9 ?% [' r: j& ?
1 I4 f+ t; Q! s4 `0 Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 m% D! i2 ^* ~7 L$ u2 s3 C

% @$ q# ?1 D: p/ Fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 o6 T  i9 w; ]4 c4 R$ t;;
将此次交易的记录加入到customertrade-record-all, Z! G1 I5 U) E0 y+ W4 _
end
) ?" i4 u$ V  @/ u5 ?2 e, K# T& @6 A, E8 X
to update-local-reputation
# ^* V+ m- l6 _( M% `/ Vset [trade-record-one-len] of myself length [trade-record-one] of myself
+ V7 S5 L( r* b$ J& {
7 X. k' F1 d1 J( E; {8 D/ {4 U  {
;;if [trade-record-one-len] of myself > 3

& P7 ?1 H% P& N: ~update-neighbor-total
0 N: J3 w2 R$ B. `! T;;
更新邻居节点的数目,在此进行. ]4 m4 o; A! k1 q3 I& U: A
let i 3
. E6 C( X" t& R( g, o6 E* Flet sum-time 0
. p# W* ~' k  o. Y+ Z6 t: B. awhile[i < [trade-record-one-len] of myself]( r: |& [: _& J$ E
[
% p5 c6 v6 X: Z. E* ^4 _+ E& G* nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* `3 w5 b. p& u- _$ C% \( \  C* sset i2 K. K* s7 C* a" S/ D
( i + 1)
7 c! Z# i0 C6 n: R/ G
]. |0 f$ Y$ y* T
let j 30 j) o# n2 a" U- [
let sum-money 0
8 ~& v2 L0 d* F8 o1 N$ @while[j < [trade-record-one-len] of myself]
( b- b8 v! B+ A0 }# X+ U9 c# m[" X" q) u4 f: w6 V, X
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( P5 F/ |# j, d, {& u$ C, {set j
1 b9 V! S, P8 C3 T( j + 1)
6 m% J  @5 c4 |+ ^
]1 N/ {- k" D$ |' n3 l
let k 32 l/ e( \* B" J; }# b9 f
let power 0: \' |4 _2 m. Y3 w1 Q- R
let local 0
; F2 I3 S6 d8 q4 t5 ^while [k <[trade-record-one-len] of myself]
3 ~! C2 ?8 x" |1 X* |. u[& U* |/ n$ g- _! k! V" f2 s
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
" ~( p( p. ^! \9 q" E  vset k (k + 1)
1 M. a' d; a6 T) B  I]. I% O6 _! E! c+ I
set [local-reputation] of myself (local)
/ n. A/ {" |" {end
3 f% ]! @" `" J# i6 y) Z2 M8 G
. b2 i0 f& i, B. x7 d% _+ Ato update-neighbor-total
; M! r8 l+ c! u) D' n
/ \& X) t5 w2 G, aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; K7 a/ T. ~, b5 @$ B8 ]
; q; l6 {3 p  h+ p- p6 M- |
  y6 Y8 D' h7 a# d+ h9 q- h! r' [3 c' d
end, q9 Y) B( m  G7 t7 V' E! |

0 B+ ]6 L- E# z# C! mto update-credibility-ijl
- v' [8 m8 q& s. I! I. H4 F1 V2 Q) J$ _- i' `. T# E, U* V( D7 I% J
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
6 k) L. ]) K# P$ u4 n6 M! g, glet l 0
2 m/ G4 j5 I# H# @8 ]+ c" wwhile[ l < people ]
  K( I0 T4 }( D% q7 J8 P" T;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价! S9 `3 l$ T- K4 M7 i4 O
[
  N0 d7 _1 W2 zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ q0 e( r/ `0 C+ Q( s/ i, nif (trade-record-one-j-l-len > 3)1 {# E2 }  w* n7 X2 t6 t( T6 e
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one4 M9 v, i3 [8 P6 S2 N/ B
let i 3
1 B* ?) R% A  Jlet sum-time 0/ B) P+ h8 F+ _( {& ]
while[i < trade-record-one-len]1 c  b( r( P: M4 C% W) a
[1 P+ V. `# Q! S- ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 r8 q  m# |% ]
set i
  a+ K" y/ E7 v8 u( i + 1)
6 {0 X3 G/ d4 X: `. M4 P/ D, Y! Y
]
0 ?/ I4 L8 o4 }2 k; u- rlet credibility-i-j-l 0# G/ H% d: u8 p0 X& q% U
;;i
评价(jjl的评价)
. M5 a( T2 c. rlet j 38 P) b0 z* i# U1 E/ J! {# O
let k 4
; d5 o0 S; v* e3 D2 Q1 F6 ywhile[j < trade-record-one-len]
$ p* I, V- \5 c( Y[( p$ d7 M  {" D$ w
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉+ d9 x( ~' h. r7 Q; H
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
6 a- @* g1 n4 |' C( y4 N+ o; uset j
/ c5 C' E0 n: o( j + 1)
/ s6 w, @! m0 J3 M9 T/ N& }6 c
]
+ C5 L' G* _5 Oset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
$ T3 V1 N0 `1 ^0 _. H/ |+ x" z$ D' @5 W  A8 [. {9 T7 F
, V& W% b1 B$ |1 ]9 X
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ V+ G/ g  D5 o5 i. P/ L) w1 H* ^;;
及时更新il的评价质量的评价
1 ^( S4 Z% d( d7 yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. ^. C# _! I9 R9 s4 N/ S4 y
set l (l + 1)5 F6 |5 Z  [+ a: F- Z: ^7 i
]
! Q# d: z1 P' B/ W9 i- @end
' [& Y. G2 }8 o- E7 t& ]' s9 a5 p) `
to update-credibility-list  [5 l" P, E$ S- c- i
let i 05 j9 ^2 v. i. i2 ]
while[i < people]
* f9 \( B( K# Q[8 J* T; x" f0 B7 Q5 r  p( Z
let j 0+ a0 `- y, P) P8 A2 Y! ?
let note 0- K3 o7 H/ s8 G- j* E. n6 N, [
let k 09 I9 {% R4 P/ [4 s; V' f
;;
计作出过评价的邻居节点的数目7 A, C* e$ X7 H" g$ G1 K. f3 f
while[j < people]5 A! D+ l( C( k2 G+ L  A' p; W1 C
[9 \% B- N% K' e
if (item j( [credibility] of turtle (i + 1)) != -1)
) u6 C& y0 S2 a3 \;;
判断是否给本turtle的评价质量做出过评价的节点6 t) P0 @3 R4 R5 Y
[set note (note + item j ([credibility]of turtle (i + 1)))# r. X* V! Q/ B' K- R
;;*(exp (-(people - 2)))/(people - 2))]
$ W3 \( W" y8 x8 z. V4 x
set k (k + 1)
  i; ~3 J4 I  E, X: Q1 U]& _! `+ z' w" |9 T8 v! z9 X
set j (j + 1)
3 z: V# a6 Y8 r/ c]6 h4 Y) `2 d9 j3 x' g4 o' ?8 m2 ?
set note (note *(exp (- (1 / k)))/ k): V3 h8 h. a" }$ Y; Y1 Z
set credibility-list (replace-item i credibility-list note)& x2 D( o2 ]! E3 C- e! n
set i (i + 1)
/ R! d9 Z5 B" F( Q% X- v/ n* r]
0 g2 _( H9 I( K$ D7 Uend
( _! T) R  k2 h9 _. H: ]# A' ?8 Y* Z1 E: q4 n, p5 s
to update-global-reputation-list
1 _  U) b+ v8 o4 K% J' c. e% |6 o; Zlet j 0
- y$ X4 O- X  T$ A1 wwhile[j < people]
* ^! @7 r9 _- U, v4 {[
9 U" l# C9 U  I; d3 s& r! o7 plet new 0
6 q. Y3 l' G$ f+ P;;
暂存新的一个全局声誉1 J% m, S: T: f$ K7 Z% N6 Z
let i 0
4 t% }3 {8 t/ p& Y4 Rlet sum-money 0; C0 U9 J9 W& e5 u2 ~$ [( r9 w" c$ v1 y! ?) ?
let credibility-money 00 O3 I2 O! L( b0 I- D
while [i < people]1 P: i; h, R6 A! T3 e  X# U
[
- Y8 x2 ~: [1 }7 j# a. Y; ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 {2 i7 D7 q7 ^  [7 Y# Sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 J- t3 J4 N. s* N; rset i (i + 1)
1 T4 ^0 a6 U" r. G) v/ e$ N& O]' D+ g3 {( ~+ m
let k 0; o" D: w. n  s" w6 P5 k
let new1 0
/ A" Q2 t0 ]+ pwhile [k < people]+ @) C, q% b+ G) l
[/ S8 q% h- Q4 J) P1 u8 ~2 R
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)% q+ q8 }" Q' g- m% g4 r% {
set k (k + 1)0 ?' y- d" R$ @, Y6 I# w: W0 k
]9 u4 U6 {) T7 u7 l
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! v1 D) L- K/ a. e( x% k7 H
set global-reputation-list (replace-item j global-reputation-list new)
. M0 Q; E+ m  r, Rset j (j + 1)2 _& ~8 E! r* Y; f
]
7 K- E+ d4 h$ o: y& w. }- p6 ^end
* h: n, t/ A& V2 ?0 i7 P+ Q$ s% }# d0 g' e% ^

6 l4 u- ]$ ~7 v$ q- q! k1 r6 x  A( a% G2 [5 j
to get-color$ `9 m: \0 P. q# ]; t& v5 F
! L+ }0 v8 A0 T- G$ A# a. `
set color blue
! T4 F) ~- w  f
end7 e' [& W1 g5 ?9 m

% {/ |: ?! k% x% Oto poll-class. S) u" F: k* s7 f- A8 A  U
end+ s8 `$ R2 b, u. r. b
* L6 ~8 I, t8 T8 i+ j
to setup-plot1) `6 s$ T! ]: f: m, k% q

1 v, [* s  T1 e$ I- H. K3 Eset-current-plot "Trends-of-Local-reputation"

' o# h$ r' ?+ W  q# f1 t% X  N
8 h# Q! |, I. u: c+ x, g6 j1 Dset-plot-x-range 0 xmax

) }6 S' V6 t# E+ O, I' ?! _! _. V' q' U1 \" e
set-plot-y-range 0.0 ymax
9 J& X& C% B4 K3 O
end/ s/ _0 U  X! P: Q$ g8 E

" z8 L3 u0 m* wto setup-plot2
' z: r" i' @$ a" l$ A$ J/ S
' h" u# q- G" a3 M$ rset-current-plot "Trends-of-global-reputation"

' @+ M. R1 K( v9 C' m9 o. P$ b5 z: E& b+ a1 g- D# I
set-plot-x-range 0 xmax

" O. a- v1 i% j; B6 z3 Y" u$ u" {
7 n  [9 Z. }' Z6 Z* m# Qset-plot-y-range 0.0 ymax

' ]+ g( }& C; L" X6 F8 `. e) wend  |7 |% Y  X# @  I! N# i% ^- |

# s. z3 V! l+ d: bto setup-plot36 `  c# X  `0 ~

/ T) a) @9 ^% ^7 U2 k9 C! Mset-current-plot "Trends-of-credibility"

5 ~' }2 E( }: u8 V; D$ Z: z3 B, o/ o
set-plot-x-range 0 xmax
- X1 ^; N/ S' l

: a- P8 ~% b8 K; Wset-plot-y-range 0.0 ymax
# P' C& R5 u% u9 R9 \
end& R* N5 L( m9 j% j7 F0 J; w9 e

# \. H: u6 ~- g1 J6 \, |to do-plots
3 H+ O( O8 t- |3 dset-current-plot "Trends-of-Local-reputation"4 i5 `  s* N( F1 k
set-current-plot-pen "Honest service"$ ]# J8 K: H- v; L, e2 E, Q
end
, y$ {$ I  E4 _5 p5 B- g/ o" [4 K7 ~0 _" F
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.7 W4 Z4 T8 W1 {5 P# o% L

+ y! y1 k% `4 q& M" M这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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