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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:
7 w8 I5 F4 y( Y6 k; n, x; ~to do-business 1 ]7 ?" G  x( x' P' a
rt random 3606 ]  v8 r# B( U3 w
fd 1$ W! l$ A9 w: Q4 l$ N/ q9 V5 p5 ^
ifelse(other turtles-here != nobody)[
* a1 _; l0 m3 ^6 m. c, e. I   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.; P2 Z/ m: o; m) U6 f1 ^
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 R- E+ b% s5 x& ~. v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* O$ G& b( j; M, U# h# q   set [trade-record-one-len] of self length [trade-record-one] of self0 S- ~4 I) i; @5 h
   set trade-record-current( list (timer) (random money-upper-limit))
! V4 Z' N  i9 m9 k" o+ S* Z* u8 o7 k& y, T
问题的提示如下:0 F6 K/ u7 U. b
. a& u2 r+ ^2 I* S
error while turtle 50 running OF in procedure DO-BUSINESS7 A, Y5 O; Q- ~* v
  called by procedure GO. Z: p2 a9 v& Z& d/ ]* ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. j! W# w: |6 F, ?/ i% Q
(halted running of go)
- L; |  f7 \, L4 j* ~. D4 k9 E$ P8 R. H! g9 |
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~~
; S" m* i; H+ M* }( _/ N0 W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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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2 q6 G" O- u" B4 I/ x: r- T, k
globals[9 J1 i4 l8 t) D9 W8 _7 t
xmax1 J+ D  D4 ]  r1 ^. C5 i2 S" J
ymax
/ F- v/ k, i' `" W) Mglobal-reputation-list
, Q5 y: I$ H) [( |
8 N8 M0 `* n! `' r- H5 m8 n8 h4 Y;;
每一个turtle的全局声誉都存在此LIST8 e4 b1 u% j0 k5 W% J1 a
credibility-list
6 A/ E; }! S; \5 A/ A# l;;
每一个turtle的评价可信度9 k0 u2 h9 y; H( |1 a+ Q
honest-service, C5 ]4 S- P! u: \% i3 [% r
unhonest-service
& i5 r+ @: v* loscillation5 x. a/ ^# E; F3 Q
rand-dynamic3 i2 p7 \5 L/ W, t! V
]
: `0 T' C! k: L8 }" I) }- d1 q# p) A8 q8 Q( u7 f+ u& F4 E
turtles-own[
; Q6 z4 |/ w( C. X* dtrade-record-all$ [! f" O5 P2 ^, @9 O
;;a list of lists,
trade-record-one组成) O  V( A! J2 p+ `
trade-record-one
4 B$ z; E2 ]! I) }, Q& P/ ];;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. |4 Q! ?3 M2 Y, b8 f8 J0 q9 C- C* F
  G9 L% h# s/ }+ L: M6 {, \: ?/ U& u
;;[
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]]; G% j+ X$ Q. Q) Q4 V7 L; S. r; Y
trade-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]* K+ K6 l  R' w% f4 k' g
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list2 A3 {+ h- d3 c" X
neighbor-total7 O! R" O$ E2 c3 p1 v, ]
;;
记录该turtle的邻居节点的数目$ d6 l' w2 Z( I6 x& E' @( P
trade-time1 T& o7 `* K1 b6 k) Q5 E
;;
当前发生交易的turtle的交易时间
7 ~* j3 m. e+ a8 W; g) qappraise-give6 r& E& {& X) e! n/ S5 C$ I
;;
当前发生交易时给出的评价- D4 ?1 b, w: B' R- v( E2 }# H1 X2 n
appraise-receive: p% s; T, ^. [& |4 L  v
;;
当前发生交易时收到的评价
5 x! }2 u* @% C7 h0 p% ^# p* vappraise-time
7 c! N' E1 _6 B. b% m9 P0 n;;
当前发生交易时的评价时间
" Q8 D" S4 y& ^7 J/ n- e- ]+ ?; }local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 H  o* ]! y1 `/ x) ?" S5 P
trade-times-total/ t# D0 y% F8 V2 p& B6 i
;;
与当前turtle的交易总次数
3 q, u! q& w, T: v6 w- n+ ?* c, gtrade-money-total- y0 t0 W! s) t3 {/ A2 K& x0 C, V
;;
与当前turtle的交易总金额% l" O' O: u1 }$ [2 z: h* V
local-reputation
9 y  e$ |( l& {0 a8 i+ Vglobal-reputation
- y! _& x& `( @9 i9 u- V. ccredibility0 D4 s, o' F$ i. u
;;
评价可信度,每次交易后都需要更新  i9 \$ F% O' a3 ?: |' D& k$ I
credibility-all
- B6 \, {0 b" b& A2 n;;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" j7 b% r* H+ ]1 ~3 _
0 z8 |& r1 ^2 n' ?& m; [
;;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+ b4 p2 D( s5 P! J6 d* M1 u' h
credibility-one
# {" }0 Y- Z8 C0 `! b& E& r;;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
  }0 p. E* }, ^& Q/ t& s$ Gglobal-proportion
+ C$ V: |  j' {$ h. v* Tcustomer
' ^, R$ C! f# z* Q; d: @7 @customer-no8 U5 n; {3 m; E+ e) s2 N( F$ d
trust-ok
" \+ Q1 O6 \0 k5 C1 Ltrade-record-one-len;;trade-record-one的长度
" \8 O( G  C* D% W  O  l2 W, d6 k1 d0 k]1 g' r# A. S" D
  f, t& @% i+ P2 k/ S& \
;;setup procedure
7 N$ l" q$ M. \$ s6 n* l) w. l$ N) H1 O0 ?2 Z6 \
to setup" w- E* `" x5 f& _2 d

3 Y7 i* y* s; h+ c  Qca

$ J- k: `* Z7 a' I1 r+ E7 J$ Y9 }+ T1 C9 N' p2 e8 d
initialize-settings

! v0 k2 b6 E3 t" d$ N+ v& s* Q1 ]% K6 }1 H3 n+ R
crt people [setup-turtles]

. m" n+ W" O$ H3 }: p# f: ^
5 M) n! Y- u- v. e( |* ~9 L& yreset-timer
$ g4 j- Q; z' n0 n% |

! Y+ R( v% W4 _  {poll-class

* I- B4 J% ^- r4 S* h+ D
7 @/ z4 b$ e1 j% ]5 J, Vsetup-plots
5 ]2 b5 r& [# J
7 s: D% V( I7 c1 S) \
do-plots
- A9 ~6 a$ V+ f! T( C% l
end
+ N& M. p$ d6 |) k7 K$ F& e. y( j' D, T& ^* Z
to initialize-settings
8 J& s4 M' W/ q
3 w/ D  @. O8 X' Mset global-reputation-list []

3 r5 n9 C" i* \3 J
% o$ j2 _& f0 d9 ?set credibility-list n-values people [0.5]
7 N' U, }/ `9 i* {

6 h+ N; U' {. gset honest-service 0

" l: k4 c& R$ o4 v, C* ]. i: Q0 I
& d: C4 u9 }# d. ~" x0 D3 nset unhonest-service 0

( e8 G1 @# Z. Z+ [( R4 w# l% `6 r: {( d0 e- M) A2 S
set oscillation 0
( w) {& \: q1 u! ~% X9 o% F* H

/ H% J: N" y/ O8 O$ hset rand-dynamic 0

" z* P" [* ], \$ ]( Uend" S7 c, ~9 p' K( c8 V

4 p- X3 g, i7 P8 ^6 Mto setup-turtles
: u2 t/ {) H! {9 t. ?3 {set shape "person"3 M0 B5 ]1 D0 C9 m' ^; g/ f
setxy random-xcor random-ycor9 P- r3 b, a' i( i; [! v- F0 J
set trade-record-one []
$ m7 H( M8 o" o0 R3 P( ~
: S, x: k. r6 H' Z/ g  L) T# {
set trade-record-all n-values people [(list (? + 1) 0 0)]
. N* A! U" E6 M/ ~8 N

. ~4 h" R% y" i  |set trade-record-current []4 c# p0 q7 U; B2 R, G
set credibility-receive []) _$ Q6 U9 T8 a! z9 d8 g
set local-reputation 0.5- Q  Y  C# A# x5 K' w
set neighbor-total 0
, A4 u: f+ q9 {, q9 Rset trade-times-total 09 t, K% Z3 L3 S+ N
set trade-money-total 0, Y$ v7 J. p7 M3 K, P
set customer nobody  v( f0 c( J& E! u+ {
set credibility-all n-values people [creat-credibility]
( c. D+ t1 N! f/ \set credibility n-values people [-1]8 G5 R. h. j2 P
get-color0 t9 U9 X) u4 M) `- @2 U' x. n8 ^

6 Q* l" ?9 o$ D% M$ g& Oend
1 d/ e. ^. o$ T$ ~6 }* Q. N- o# o, E  {
to-report creat-credibility% L# N( x0 C% v1 J- Z: {
report n-values people [0.5]
$ c' I. ^; U3 Y6 M7 o6 \end* M( m% |- v, z
  g" s( d2 r% I' z
to setup-plots- B- M  @1 d; g5 I
0 V! t( e8 F/ [7 E) ~
set xmax 30
1 W- q3 j% W$ k
2 M6 v( _; r3 k
set ymax 1.0

/ V% z1 R( K/ l* I% O8 R
# s3 a- c% p5 @) W- W/ f8 @clear-all-plots
1 P" |" H9 H9 U6 T/ X
% i- `. j, O  t
setup-plot1
8 r) M% d2 p* |! x
$ a( O' W6 T# ^
setup-plot2
' C! d  L1 a0 G4 Z1 l- c
0 A6 r0 D7 I7 C1 I7 ?
setup-plot3

7 G  f3 M4 }* A- R8 Mend; f# a: r5 v/ B9 q! }

& p* M2 K3 Y- w  C;;run time procedures9 A' B$ S2 ~) |# O4 i  n
" I( Z" l: N* E% \4 ~5 y; K
to go1 A& T! k( P% M, ~4 H/ t% N
. Y: _( x% r1 i1 u; D
ask turtles [do-business]
9 V* u. D! Q, }
end
3 T9 H# }  s7 @0 N7 q, I% p# `! c. ?* }1 Y/ u) A
to do-business
) r4 m- a) ?! D9 x. ^8 b5 k

3 K$ X7 u  O* ?6 f" F% Y
1 x) C: x" @: a6 f  ^  v& [2 O3 Z  Hrt random 360

# Q2 X5 M1 Z/ i
7 t" x! k0 ~. Qfd 1

/ \0 M! @& J  k) Z# c
3 I, O9 T6 s, _  Z6 Jifelse(other turtles-here != nobody)[
) A! j$ K0 N# o* _3 }
0 B' |4 N+ @+ h' f1 N" v
set customer one-of other turtles-here
+ W2 z  L9 |$ }% U6 N( c
/ P1 R+ R$ J8 D0 @( |  Y
;; set [customer] of customer myself

( o! K! |+ y; h/ n/ V1 w
# m7 S) t  `; B# ~# r4 f( rset [trade-record-one] of self item (([who] of customer) - 1)
7 U) C! z6 v# ?( s0 |[trade-record-all]of self: s1 E0 ]. p+ S0 F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% a: b% {& s" \9 p( ^6 Y2 ^- j/ I6 Y3 C: R3 }4 l" W1 g. A- u) L
set [trade-record-one] of customer item (([who] of self) - 1)
' R/ e" O' [8 L1 {[trade-record-all]of customer

# V& {6 J- b3 y2 n2 V, q' D
2 `, C! \/ i8 ^- l$ T. o( }set [trade-record-one-len] of self length [trade-record-one] of self
& F- T2 _8 H) F0 I7 H2 b8 @
6 v! h- |8 ^" a, `
set trade-record-current( list (timer) (random money-upper-limit))
2 Z; J) I' m& y% ]! ^
, T! R' i2 D. w  v, G/ [
ask self [do-trust]3 Y* T3 @& i' G
;;
先求ij的信任度
) b" S1 L8 s' w; Z; d$ X# [: ?  x
if ([trust-ok] of self)
6 l) P! m# T6 V- b1 P, N;;
根据ij的信任度来决定是否与j进行交易[
4 [( u) r' L7 }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 I. h# k, `# s$ d

' f+ j; [7 `+ B7 j( x7 z[

' S" \/ n. J+ {
8 o3 e8 ?2 y  ?3 b5 |do-trade

8 ~2 P) u: ~/ B: @2 u2 J& u+ i' v8 Y0 O7 p+ E. d4 P
update-credibility-ijl
. C. Y0 w0 V/ E; M
! X+ C$ V2 t2 ]& F9 Q
update-credibility-list- b# @# u' O* \- C' x2 M
+ v4 s8 R: O/ O+ T
2 S& p# n7 B& f  ]  h
update-global-reputation-list

/ H, A0 t2 l8 N$ ]; g& F7 ~8 N9 g( W
poll-class
) F! K) K) y2 y0 }8 k: a
1 v7 }6 l9 @( d  j
get-color
+ J" Z; M" |& R3 l) m
* y3 L6 h; i) ]2 `$ ^- i
]]0 G6 F' A  e/ h2 I* g: s

* ^& X( {; L* e- b! d. V9 e4 X2 C;;
如果所得的信任度满足条件,则进行交易
4 `9 k) _6 N! o4 C4 }) k1 e/ T$ I
[
! N$ n: a: ]! T  i  a; J

4 s  P& W; {' I7 hrt random 360
* G- Z0 C$ }, j8 U" u$ J8 C

, L. R& B! o" x" A8 k" K1 Kfd 1
* T* m1 M  G! r, O" I, c  M$ d, X

; f5 ^  s: U' I' R]

9 D4 Y/ q. W6 Y
2 p" v# \: L& fend
) m9 v8 U/ u+ A+ f: j& f8 A

8 k' @  Q( W( _) \' H  }to do-trust * B; a, T: R  h" @+ D# v
set trust-ok False
4 @( Z8 p; _5 i, R& Q9 Y) K2 y' w' t, v) D- S

& [+ h8 L1 R+ W: q: q- v. rlet max-trade-times 0
) ]7 N% F6 K7 j& Z2 p# c* [foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 L/ d3 E. X6 K8 B# V* Z9 ~let max-trade-money 06 `, v" l2 L8 u9 m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- U. G2 Q, m5 @1 {/ [0 I5 }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 r9 T* `6 X: J! {

) q# S* `7 `1 O8 S3 R7 `/ w2 c6 U
% |7 `: W: ]' L$ v9 a
get-global-proportion
$ h( f! D7 @( b4 }let trust-value
( Y* O; y) v. B. g) Q5 jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: J% ?4 s0 }6 H# g5 S2 ^  j1 q
if(trust-value > trade-trust-value)
; F8 F& i; ^8 F5 K6 _1 x! b[set trust-ok true]
* X; T# [0 q+ [. ]7 N7 v* ?; J; Uend) i, e/ R/ y: I* P' d! ]

5 p& T! z" }3 ~to get-global-proportion
7 Z/ K/ b; T. s( Z2 ~# G) Z/ O# u: [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 W5 _% w4 N3 {, h$ ~5 p& Z[set global-proportion 0]) _, H2 S% V9 q: R
[let i 0
  W9 [& l1 W' \6 F# S: B4 _let sum-money 0: X' x# E# b! T4 u
while[ i < people]
( t1 e7 e4 T, s; [' n6 A' X; B[
* ?* M: p9 ]1 v% O% k$ Kif( length (item i/ \' R) X" X% ]1 C9 y1 ~
[trade-record-all] of customer) > 3 )

4 Q8 e3 u0 I! C9 U# c/ ?6 O8 v2 _[
( ]$ G! ?. n! r- `' L5 r. b2 q9 fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 l$ b, P, q" W6 k2 J% N]
3 ]8 `2 D  ]# F. l  Y- \2 @]7 p' s" A) F* w  C/ N
let j 0& B. D( q! s9 j& L+ ~% S" J
let note 0
  }. t3 ~* s& X6 O3 ]# F4 ^while[ j < people]" b% b! M) a  O+ L: A3 o/ U
[% Q/ P) a5 m# v8 A4 B6 V
if( length (item i% P6 t8 @* f2 E5 [' E
[trade-record-all] of customer) > 3 )
, c' E- U- ?& x+ n9 ~- A! z( i
[" k; a8 N% F% M7 ]1 P
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ z1 N7 W( Q/ Q" P- m( d, s' E
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ y- n* i/ b: E8 m9 ]" Y! G2 E
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 a" H# l; _* `3 Q- d
]% ]1 G: e/ r6 q9 `7 g) a
]4 g9 f$ _% L5 |1 X9 g
set global-proportion note
7 E3 B- t* P5 N% X/ K. Z]5 h: s( ^9 `/ G# B8 r# G$ [
end) o- r: j, Q0 b; Y1 ]0 U
! `  n0 [0 E  f7 @
to do-trade
9 \0 H& ?' C/ H, }, }9 T/ v6 @;;
这个过程实际上是给双方作出评价的过程
+ Y* p* L4 g8 l% _( Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 t" D2 ^) Z4 ~3 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" U; J, N; @% U( P3 c6 p
set trade-record-current lput(timer) trade-record-current  X6 j5 g( Y8 |9 B
;;
评价时间
5 c+ b# f; K! z$ s1 H. _8 Lask myself [; `5 ]- V8 M4 o* J. j; }
update-local-reputation. |  k9 t; n0 Y$ L
set trade-record-current lput([local-reputation] of myself) trade-record-current* I  ?, X) M  U+ k& K) r! e: B
]
4 K0 F' g: X* ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' R5 ]% B% o! U5 d1 l) [;;
将此次交易的记录加入到trade-record-one
/ O8 Z- u4 R2 Vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 l3 n0 _, V9 o9 U( X/ _2 e7 y
let note (item 2 trade-record-current )& D1 _1 R5 b! ~0 Y8 ?0 F( V
set trade-record-current
# H; o9 q! S. y(replace-item 2 trade-record-current (item 3 trade-record-current))

+ n5 e' d& `# s) X6 Jset trade-record-current! w* z* v, ]( X8 q6 L
(replace-item 3 trade-record-current note)3 G% ^) S2 t% J, K$ M

2 C, l' R5 c0 z6 g- v- [/ U
$ d. ]5 K$ n- H! b( h
ask customer [: F6 S# s: {' i$ }1 A8 B
update-local-reputation6 b) D+ D" v7 \
set trade-record-current
, B+ }+ e& d( ~+ F(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# _1 i' U! N1 c' u2 }2 g
]# B5 V3 I3 g; o! p  T' {' G) _2 |
2 [4 }" y, a( _

: z% T2 a: O+ ~  _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" v0 G2 I7 i6 z, N; Z5 I5 V
7 E7 W  r% D- N% d! o. w6 Y5 c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  ~; p, C* H- A; R: k! R: }7 C' {;;
将此次交易的记录加入到customertrade-record-all
( x' e% j6 Y. m* K% o" ]5 Dend6 T& ?5 h5 |/ E  w6 M# b" O
, U+ o4 A" t* T0 E# {
to update-local-reputation3 m) N3 }; x5 d, h* L1 e9 t) c
set [trade-record-one-len] of myself length [trade-record-one] of myself% Z8 }8 A! ]+ ^! G

6 J7 F! P5 h+ N9 F2 o3 t& E+ S* G3 N' m8 k0 T* R: E; C# Q
;;if [trade-record-one-len] of myself > 3
9 t# l6 h; k# e, ^+ a
update-neighbor-total1 e. `8 S( v# d8 k6 V( ?; t) [
;;
更新邻居节点的数目,在此进行1 k% T6 V2 c/ J8 ?# s$ n( v
let i 3
2 y$ h1 y. d; b* W' U) {! ]; y9 ylet sum-time 0
( C" B, \- o, \  twhile[i < [trade-record-one-len] of myself]
$ F% {& E0 J1 F& H; E1 ^: ~% t[, s# K1 I8 r" ]& b, a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): p0 J; P; ^* r
set i
0 {# q% v4 \4 U: a0 J8 h' y( i + 1)

1 }0 A$ A3 X, u  o0 n; j8 h]/ C* N" b6 [! Z
let j 3
; U* z% s( P+ qlet sum-money 0
3 j5 K5 t& ?! Y# j2 Qwhile[j < [trade-record-one-len] of myself]
! |2 m9 U' T4 a, _' j7 y, T[
, O7 M5 F8 c: {  {8 t3 Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# L& t9 p4 L) B; s9 ^2 ^3 a" F8 Nset j$ S' v0 T8 s7 |
( j + 1)

) l  L0 P& ?. `]
/ y5 c6 `" p# T; {let k 3
' w6 g! L5 N3 Q0 t2 k7 E  Ylet power 0
  f0 l) u1 z1 f/ D2 B% \let local 0( K1 ~: w: K8 D6 R( B- @9 R
while [k <[trade-record-one-len] of myself], G( I6 E) ^+ Q5 U) p
[
0 ^9 d+ S2 h1 Xset 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)
  x  G+ {$ P6 i7 R0 rset k (k + 1)0 p: y0 o2 d2 U) g$ b8 I% ~& f1 q/ v" Y
]
/ I3 d/ h% t5 xset [local-reputation] of myself (local)3 h% n! G4 p/ W! n, R! [5 s. D
end
% \, m7 b  Q# p/ a7 m. y2 g& T: v9 S$ n
to update-neighbor-total
+ Q: `4 L+ \* m8 j/ A+ o" `6 X  z( Q) Q8 e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& w1 w9 O- M9 v; d+ j6 Q6 F
7 v# ~, b9 x1 G5 k$ d- J2 U; \! {
5 r. j/ G1 s6 Y# [
end8 z  o5 Y' Y% m

+ x! v" e$ J7 J; s/ n) \to update-credibility-ijl
: H+ x- Q3 m, B2 Z
+ r! Y5 x! i( q  M- ~;;
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。* {( u7 }; Q! a. Z  ]/ s& n
let l 0. @; A6 A8 [% Y& ?1 d- ^
while[ l < people ]9 ^2 G; s- O$ q3 ]
;;
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, b; \5 G4 c- \9 T
[" |3 R" O; i; m7 Z( Y! g4 P2 a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) G! }* b- t# f$ |2 f  z; `
if (trade-record-one-j-l-len > 3)
/ f' W/ I+ ?: j5 @& N[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-one0 T6 G, c% [( G
let i 3
  f; m5 o7 S/ q& {let sum-time 0; }# G% y2 K% _1 v% z4 G2 e: V! z
while[i < trade-record-one-len]* s7 f3 X" |2 g/ y$ R& i% x4 [# d
[
& l4 ]  H6 N8 V! u1 ^$ q; ?( t$ Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): ]3 m! X! H% R. l
set i( O) W% G6 Z4 U/ _" q
( i + 1)

* s3 f5 N+ i3 m: K]
. e5 u1 w1 Z+ v/ j: j. V* vlet credibility-i-j-l 0* Q/ l1 D" g! n! }: A0 B. z/ k
;;i
评价(jjl的评价)* q. Y6 _4 y* J" h9 E' ~! |
let j 37 W& O: i; U* c
let k 4& C' f+ |$ l* t0 b8 y* }
while[j < trade-record-one-len]
  m( p' B. D4 e[$ G, O  C* ?" i( j
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7 i: ]: ^0 ?4 M1 B6 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)+ G% M- ?9 \$ y# s' E
set j5 ^4 M) v3 R6 q3 b3 w
( j + 1)
/ Q  Z8 g! _/ [4 M4 V
]
) f- U# s) B" y7 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 ))
) W. S. ]0 g4 B# x: X5 `$ o- @* b8 O
4 q/ c5 m/ p4 \) o0 M, y" V
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! Y$ n$ I  o% e) x: B
;;
及时更新il的评价质量的评价. v" k9 ]8 o5 ]$ H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, ?: R; S& ]5 R* J: h0 fset l (l + 1)
$ Y, j* B/ m/ I$ u]
$ u. Z1 i2 |: _- V* {& oend) v8 V1 J4 D5 b9 u) u/ A
+ Y/ w) B3 x2 k
to update-credibility-list
5 g  z! k- G  z1 rlet i 0: w4 K! ]0 `) B: c3 b5 x7 S
while[i < people]
# N9 o" N, E( J6 N/ a7 s[, i5 `! B6 J) m7 |) i. H  y
let j 0
% n1 ~$ p4 W; E9 L' ilet note 0
4 D! ]+ s" c) ]' I% Nlet k 0
  m: r4 h' F+ w2 j: ?6 ?;;
计作出过评价的邻居节点的数目9 ?* }8 G4 B- h0 O  x4 a' }
while[j < people]! ^- H) H( r, N- f1 q( ]
[
& v' [- F9 b% k9 h- g# x5 Pif (item j( [credibility] of turtle (i + 1)) != -1): y3 D1 I6 U3 ^9 f6 w2 j0 G* ]6 a
;;
判断是否给本turtle的评价质量做出过评价的节点3 i2 A/ Y% \, H
[set note (note + item j ([credibility]of turtle (i + 1)))
- l" V+ k5 }7 F+ k- Y" d;;*(exp (-(people - 2)))/(people - 2))]

9 @% t: C+ n+ S$ Hset k (k + 1)
$ l$ n; G. m( l  u]( n7 C. y% N# x( E
set j (j + 1)" T# C0 Z' ^4 G0 |' E% w; X
]
* F! _( _1 Z, ~9 y! ]" p: Tset note (note *(exp (- (1 / k)))/ k)
6 _5 G0 R0 |4 lset credibility-list (replace-item i credibility-list note)
+ d% T2 O& A7 b/ x$ _) Lset i (i + 1)
0 v& d1 P8 }9 E* F: \]
" M; j$ r& G* k: M( r, B, [; ^end
6 p" R  o2 z; D! i3 ^9 D2 n+ O3 l: [
to update-global-reputation-list
) L+ O+ v# D4 p$ S8 _' rlet j 09 M1 g  P5 m& I+ [; |& s
while[j < people]
' T6 `  [* y- a: X/ h4 j: T7 J8 f[
! d1 O9 b- r$ Mlet new 0
/ s4 ?* x7 u: i. n7 N: @0 Y;;
暂存新的一个全局声誉
# v, `6 u1 F" M1 C. u8 S- k6 U: Flet i 0
  ?* a5 ]* c7 A; L+ n. v% K5 [let sum-money 0- s6 g( ~& ]9 \. [" c$ K
let credibility-money 09 P7 ~" `# J& ~
while [i < people]7 ~6 J6 L) M/ y) ^2 |9 j
[- X5 v! N; ]/ V9 V
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 p& V0 {! x& N$ D' N$ w. A; ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* p% W5 D" N% J5 G, P) `* Pset i (i + 1)
+ x8 U. v, r0 B7 a  ?]
$ V. }  o8 o# b) Y! alet k 0# m7 R4 ]9 ^# v8 A
let new1 0# b4 ~9 X! L$ z% @8 G% b4 {/ l
while [k < people]/ @2 o3 \! w2 ~- ~- M. ?
[
( ~- V( {9 o$ v2 m/ s$ P2 S5 rset 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)
1 e) w3 ?: F% E/ ]: yset k (k + 1). \# a0 c" j* G
]5 _9 L* T0 l2 O- @% K/ ^& Z8 W* w% q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 _) I& r$ K! W, x9 F1 S2 [set global-reputation-list (replace-item j global-reputation-list new); c: @- P  C$ N0 }/ D
set j (j + 1)5 [, W+ @* |& [
]
: y" h; F6 i  l1 B1 Gend* A* O! k2 s& z3 w* x

5 b5 Y% q5 O/ h% x1 p9 M5 ], d4 ]0 {6 r6 |: ^" V* v2 j- P- K
/ P% m7 P$ U$ H2 A. {' z
to get-color
9 t  E  |7 N* S" ]0 `
. ^6 D8 ]$ k( m6 N2 ]$ ?1 Eset color blue
6 J6 s9 {; N# }- w$ Q( Z
end6 N* l7 Y( b. `! P" q, q4 E0 D

, e, Z' K( \% d, x# l( lto poll-class
" Y" W$ R2 o% m3 R8 U8 |, qend* \1 R* f; B2 K( v  {& w0 k

8 U6 N1 T3 k* q1 v& T7 g% n$ T8 wto setup-plot1" A( l. q; ^5 }" E7 N$ E
% b) M7 f* H3 c) {# |+ v' P7 r6 {
set-current-plot "Trends-of-Local-reputation"
3 e- K* n' H) \! Q) P+ j
  u8 S: T- N1 r, ?4 `- T5 c
set-plot-x-range 0 xmax
, I' t7 ?5 [- ]8 u6 K; b

; b0 X+ y: Q3 V) c' i6 mset-plot-y-range 0.0 ymax
' W7 m: @3 o' Y- m0 i, r% k" m
end
9 [) ?! M& _4 [. ]4 r# F9 X& ~) ?+ }7 h
to setup-plot2+ I% `4 m" I' Z! e# `! r4 E0 H* M
$ P! F9 H) L' ^5 N
set-current-plot "Trends-of-global-reputation"
/ k2 @3 w5 Z: N! @! X
4 l" e) ?, ^+ N( {5 ]
set-plot-x-range 0 xmax

# J& J) Y" K) Z; a5 Y% ^+ O+ u+ \9 H4 q* w3 B) F% N1 R
set-plot-y-range 0.0 ymax

& R5 C9 k3 w3 d2 Lend
, j9 j& ^; D/ d$ W8 d6 k
  W/ F( \% o' j( F3 a, q% m$ X$ mto setup-plot37 z/ W( w) e% ^) L2 T

) ], X  o$ x# T; _5 |+ xset-current-plot "Trends-of-credibility"

" Z; k3 v( i" d1 ?- g/ v7 Q
/ y3 p7 Q' K7 {7 v# }; Uset-plot-x-range 0 xmax
: _. K- T) o* w7 \& b
) J9 R" |# `9 @
set-plot-y-range 0.0 ymax

: X. d4 _8 A& u3 Q: N( f) h# L" y1 _end
+ p" o" X! q: l, x. l3 F4 w9 p7 ]9 [7 C
to do-plots5 m! z9 z4 y9 ?4 ~8 X' b( I# s5 `. k
set-current-plot "Trends-of-Local-reputation"
9 C6 @$ r) ^% b& s6 H' tset-current-plot-pen "Honest service"
: }* g- A3 u; Q9 wend0 Y- S+ P, c5 W) J: ~9 U; |0 \$ p/ V
6 U1 m, r' _' C1 E
[ 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.
- s' ~. W. @+ E8 ^, R8 U
# D$ I/ r! R% b0 n1 s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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