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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:
5 N6 V6 q4 M' z4 M! @; oto do-business 7 E, D( c  h* n9 i
rt random 360% Z3 W9 o$ K8 F2 u3 u. \  z4 o
fd 1
8 O% r7 c" g# [  o) A3 a' u, U4 G ifelse(other turtles-here != nobody)[
! h0 c' C+ I3 [0 x# k6 {- x+ ~( H   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.1 {1 l$ l# k* i5 z" ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / Z! l6 y" B1 `' k* t- k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 S! q2 [0 m' c* B6 r3 d   set [trade-record-one-len] of self length [trade-record-one] of self
" e- s8 D9 P4 R4 O. s   set trade-record-current( list (timer) (random money-upper-limit))6 e6 E8 a  G) f$ z! \! `

5 e9 u& g/ N$ N问题的提示如下:+ S" F3 K, }0 r. C) W
5 U1 M( g* S9 D; P
error while turtle 50 running OF in procedure DO-BUSINESS5 }8 x. E9 v' n
  called by procedure GO4 {; O3 e1 J% d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 V2 P3 c& ]# Q+ b# p
(halted running of go)2 Q9 w- H' S' z7 R8 f# D6 }

2 Z. q9 R% Y" S; w* l7 u9 H0 a, x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~~, w1 q" o- \1 O5 C/ z
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! J) U# }/ }/ Z8 d7 m5 T. L
globals[
) E) c5 R* U& |- i, oxmax% m: J& R- O7 T
ymax6 P) m+ @8 ?/ H) a$ o4 q0 i' k
global-reputation-list
) e& H5 B$ a/ E5 Y# N" [- h/ c- X0 s) ^! w
;;
每一个turtle的全局声誉都存在此LIST1 N4 }" N, W3 }8 M% w
credibility-list
+ I' _9 c- ]0 a! E8 j;;
每一个turtle的评价可信度$ R6 N) a" N) p# A
honest-service
; G  b0 j! s1 D8 F1 K; e& y5 Cunhonest-service
. _2 P, y; L1 R& roscillation
/ V  J2 j! h( M' Q* Urand-dynamic$ G. Y* ?5 `7 h# E# l- v, S0 f+ f
]5 ]& a4 Q2 y0 A2 n* x( q. k3 r* b# M

/ d1 n8 O1 b! R6 @5 V7 d( qturtles-own[4 y2 [5 C6 A+ a0 z; b* e
trade-record-all
9 D; Q/ i  c3 {- S;;a list of lists,
trade-record-one组成. e6 t1 U; [) k0 c
trade-record-one
; G! L- [( e" m) Z; X* a! K+ ^9 C# q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# ]+ f+ S- T. @$ D$ ^+ G& T
: p5 f$ j1 L9 T3 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]]% k  D. [0 I- i2 J: @3 @
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]2 @7 D8 v9 j& }3 A6 H! P
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
: N/ n2 d. u# ^, Eneighbor-total+ S/ W. J* {$ ?  r
;;
记录该turtle的邻居节点的数目
* ~7 Q9 |( R2 a3 N8 O4 l. @2 utrade-time
- V9 F0 \" A  N: L' O' T;;
当前发生交易的turtle的交易时间+ H3 Z2 H, N; `( J, r8 T. z" J
appraise-give
9 \7 s+ H; D2 M6 K! H. w;;
当前发生交易时给出的评价
) n% k' m3 O& G- N, Eappraise-receive% @- s. Z, t4 R2 q
;;
当前发生交易时收到的评价
. h# G7 Y9 u; A+ `$ o9 s# {" L% ]appraise-time
% l: t- [( ]9 F: P;;
当前发生交易时的评价时间9 y2 `% B. d. y  M" T& b3 M8 }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 l6 B# Q) A3 a3 A
trade-times-total
5 y% r, q: D8 B2 e;;
与当前turtle的交易总次数) G2 J8 A1 H& [  s2 ?
trade-money-total
5 C$ M, M  \7 v9 ?( ~;;
与当前turtle的交易总金额
6 o6 h% H1 t1 G: Llocal-reputation: A9 x9 q; O$ T8 b
global-reputation
( k! q* @% n" }% X$ F# D( s8 B) ocredibility1 D, z' k  `" H1 U. _5 P
;;
评价可信度,每次交易后都需要更新
- s' ?8 m& e6 n! scredibility-all5 V: n) E1 x9 J9 D9 W, x! `# t6 ]
;;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
4 t  B, ~* y9 y: r" r0 v* v- b- r3 Q/ F/ Q1 r1 e9 Q5 D) g
;;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
2 C# o2 P- O1 pcredibility-one
- E" w2 j8 R. q* g9 `;;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" I; W8 y; p* @6 z
global-proportion
' X( R9 E6 }" k( gcustomer
3 E( P* I) U- q: Hcustomer-no
3 \4 d* L  I8 s0 O) F$ ~0 Mtrust-ok' E6 b; H: ]! q! y  F9 i' c
trade-record-one-len;;trade-record-one的长度. w- v, S! f, }7 M- g5 n. U1 y( r
]
( _+ ]1 s. A8 z0 y
2 Y& E; r' K' i( I* ]9 N;;setup procedure
  V, J! e3 y1 m7 z$ f" ~: t& k; Y
, j& k; U0 N% I- B+ D1 Uto setup( @/ O1 W: j6 v2 T* P# ]* w5 @1 S
" z0 K& }2 K* k& q0 x, s8 G4 T: e9 B
ca
* R( E; D: j9 Y
" J! z4 Q6 k0 S! [- |0 X2 o& q
initialize-settings
( R/ c" Y2 R8 e3 R5 t* p' b' P

% ~; V1 n, W! ^crt people [setup-turtles]

, v/ b' X$ [# {% H" N$ ~( K, S$ x
reset-timer
7 j! t: ?8 c+ f% O) x. L
4 |& n) |1 J" V: z3 ]/ [
poll-class
0 p, @& ~+ o: |' d

3 T& T" z+ C0 b+ i0 C; \setup-plots
! S4 i8 F( e/ `* T+ z* _( a
9 ~* q/ S+ S$ f$ Z
do-plots

, w/ O+ J9 G6 E  Q) j% p9 {: hend
7 r/ q) H- G# g& _: O4 Y0 n
7 P% K- X5 s* l5 M" Yto initialize-settings
: p* p. F: E( N& S# i9 ^4 m) @; K* t% b2 `( [$ {
set global-reputation-list []

" m  J8 k, d1 p
9 w2 z* q- ?# m# fset credibility-list n-values people [0.5]

' _5 c# V1 [- n- R5 L, H
# l& ^+ |0 I2 T, eset honest-service 0
. @/ a5 K3 S5 L' f: t$ G

  t2 a5 d. u5 T3 Mset unhonest-service 0

0 n* H* f2 x2 n# n- D- |# K3 B  _+ D7 W. v- Y0 w
set oscillation 0

8 D- _  K9 o; x0 Y; i/ ?" ?
8 T- k8 E9 c( u. u& a0 `4 c2 D/ {& \set rand-dynamic 0
9 E7 R' W! Q8 e7 G5 _
end
) |+ _% I8 D$ Y& l! Y$ f) U  x+ y" c* B+ F8 _
to setup-turtles . i: `  m3 B# B# X* z# z  {
set shape "person") Q1 v  h# S  a4 c$ ?7 r
setxy random-xcor random-ycor3 j4 j& N7 c: Z  O1 n
set trade-record-one []
6 x! c  s3 y7 r. [/ x' w
+ _  _8 `. D4 d) g
set trade-record-all n-values people [(list (? + 1) 0 0)] ' |) O/ W* m' d* o+ v& d

+ I; _& X: ]( \set trade-record-current []9 k& `& W/ y4 L4 I5 F2 A$ `% P
set credibility-receive []
6 K; \5 g" @. \/ T% Jset local-reputation 0.5+ h: j+ C8 m; y# t* z% H
set neighbor-total 0' G1 Y; I+ ]& y+ p3 z( C/ O# V. q
set trade-times-total 0
' p" Y' G& c5 d, G2 Cset trade-money-total 0/ z7 P; V* ?2 {8 V2 e
set customer nobody9 N5 `/ D/ _" O  q/ k8 D0 _
set credibility-all n-values people [creat-credibility]1 P' @2 Q" a) {
set credibility n-values people [-1]9 x! T5 C: l% A. u) N
get-color+ P3 i! R$ m: o6 U! v
. g9 H; u/ ^6 R5 e( x6 ]( Q; Y
end
. @  v% i) q2 d. j, O- [/ e) a/ W; R$ {, K: m! c
to-report creat-credibility
! K+ ^7 l$ k% c5 ?2 \( Ereport n-values people [0.5]# E2 f# ]3 A; a! z; \
end& h( M, q, ~" Y6 U

' n3 c. U$ s% K% |) }1 [to setup-plots
0 l7 Z8 H' \" m1 G% `
2 k& k( |9 m! n* c; q  M9 f, Qset xmax 30

( f6 O3 L+ n8 i3 _; j/ d. e& ~$ ]9 H! w0 h3 O1 K) A/ a
set ymax 1.0

& w8 ~8 o8 Q. r6 a
9 }, j+ h9 S. C2 \% Aclear-all-plots

5 A3 U& ?$ d! Z5 H( @% _3 ~6 a8 x$ U
setup-plot1

- Z; C: R# J7 }  L6 l# `7 T- k0 p
setup-plot2
7 p( N3 G* c) B! i4 z2 _
8 r9 q2 ?' G  r! W% I' V
setup-plot3

/ w0 n/ b0 _0 |$ u& W. Kend2 H) v. H! B+ \6 [
' [% H2 D4 ~, b" p& l+ V
;;run time procedures
( q' Z9 [) a- @* b# _
+ a% p" v" m) i0 V$ ]& Y: e7 f* dto go
! ~$ c) ~* W2 W" x: |- {
3 t8 g! y$ x* v$ f+ M+ Kask turtles [do-business]

3 k  x7 A3 v8 Y5 Bend
9 y9 V! J* `* V  W
$ ?% c. n9 R5 P/ U. L- ?to do-business
3 a" Q5 w0 S% H5 f5 J7 ~
/ ~- G$ Q+ ]) X3 R- _" P) M" d
# @( p# j3 o+ |+ Z
rt random 360
) R$ a* N! M1 G: p
% N$ `- W: w! @$ K5 s7 z
fd 1

' @( J! P: l, V& N1 O- p, |+ D. B
8 Q. i' k! r& ]+ x1 ]" ?ifelse(other turtles-here != nobody)[

! @: [5 i$ T' I! I) m8 @, a# s
: y! n! p0 X& e, C6 m, C$ J+ r0 Eset customer one-of other turtles-here
1 O/ p* M/ H. c2 w6 s$ t9 Y

3 O$ f3 b+ F, y% c4 n9 A;; set [customer] of customer myself
* z) d0 m  D) v2 g/ ~% z6 |7 B
7 k% u% b. B1 P/ D, z, k' }
set [trade-record-one] of self item (([who] of customer) - 1)
) `( [( i7 b) p4 ?' q7 h[trade-record-all]of self7 U5 h4 k% n: f( E0 X4 Z  y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 T2 a4 N. n0 ?  a# Q5 x! X& F9 Z

- R2 \  x, R4 g! \set [trade-record-one] of customer item (([who] of self) - 1)) J( S4 ~5 H0 b+ ~) o, T' C
[trade-record-all]of customer

* m( |0 g) D( p9 w# G7 Y! Q  K' v- N% h6 H: }' O6 D1 W, i
set [trade-record-one-len] of self length [trade-record-one] of self

( \& s! U% ?* s( G
; i: [, ]1 l, s2 nset trade-record-current( list (timer) (random money-upper-limit))

; n! f# Z# L" x; h9 z! P! D. `; P7 u6 Y1 L! _$ S/ L9 N
ask self [do-trust]% q' X5 ?3 s1 J' @: J7 H* k8 |
;;
先求ij的信任度
* {( s5 o- y  D8 e
* I7 i' F2 r4 Yif ([trust-ok] of self): a2 N0 k% A" c$ W2 V
;;
根据ij的信任度来决定是否与j进行交易[' M: b% M8 ~* I* p7 s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 H0 A! \" z9 S, C$ I- ~
4 z5 P$ ^# R$ Z. q6 L( E% n[

9 T5 i$ C9 Q! c; C9 M% P$ ~) T1 I9 r
7 A$ o6 N: |4 @8 ?& fdo-trade
9 ]) }+ D9 F9 Y% L

% o" i8 i% D. n: fupdate-credibility-ijl
1 Q( D: O7 j/ _+ h) f

. ^( @' u) [' Z- e7 `update-credibility-list1 ?; C& \6 X$ ?: R9 P; H
! [5 O8 e/ y/ O+ K" v! d6 A6 j# Z

& o) ^! k$ q8 V! P7 jupdate-global-reputation-list
1 @; l. ~7 Y8 r" \  F/ S

7 W$ O8 ]; a1 Upoll-class
  O3 m8 `/ ^" i6 t
: k7 a4 ~5 C! l6 a- v$ W
get-color

. ?9 N. C+ h, ?
: O( N, W1 q% t  @]]
2 N* h8 z$ g# k* t- N  [9 T' G$ G4 l" w/ X. s; F/ o5 y
;;
如果所得的信任度满足条件,则进行交易
  A9 L! _: c, U( Q3 b2 g, F. U; [5 h4 @4 o6 w: g/ h/ P+ N2 y3 O$ t, E9 \, }
[

" `: U) f. T) M" l, m
3 ]6 ]4 A$ ^, W. w$ c" H3 c3 yrt random 360
8 Y5 X0 W3 \) |5 i$ q8 X

' g7 P" {9 U( E, o4 l* rfd 1

. J0 C- f( ]1 g/ @
- P0 z7 f' U4 ?% x$ L]

& p1 o' B- o' B* v% j( O9 I% U- G5 }* `$ @- K
end
9 K8 W3 K* ~$ Z* s. d

' o- d4 J  {8 zto do-trust # e2 b6 F$ M& L, a1 z" x. s9 N8 K
set trust-ok False4 w" F4 f9 Q# _1 Y& |
( D  E# x1 `9 I/ t  j

0 g2 ^3 d) s) F$ T/ v0 jlet max-trade-times 0, k- i1 `3 m' A8 N& V  U5 O1 C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& l. M, }2 `; Zlet max-trade-money 0
5 s6 O) K" C5 U9 _" l" T( w& _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 f0 R/ R7 R# w
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* ^% n! B; u7 B( \

- P3 J: g7 i, l) T1 ^, o

4 r4 ?. R" G& s& S! T' `get-global-proportion
4 t) i0 P' X$ _$ u& `8 V  |let trust-value
" v+ q, n, ?0 M8 B& `local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- ]: E; Y: y# M+ ], C$ z# Hif(trust-value > trade-trust-value)4 c4 J  ]! C; [
[set trust-ok true]
8 X7 f" b* p4 V# K' rend
- H. N# a, o' u, c/ j8 F  J
( B) r, y# v2 hto get-global-proportion3 @$ v) g5 m. h# u; _1 x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, S9 C0 y) i5 t! e4 l1 s- M[set global-proportion 0]  d1 `/ O0 `9 g
[let i 0. ^/ N! s1 Y, W  @
let sum-money 0' e0 r; M( V2 B7 H1 Q. B4 d; s
while[ i < people]
+ c+ y7 u  @1 U" L% Q6 S; a[
3 {$ F, w: ]; k9 z0 `& W7 [if( length (item i
# ?3 c6 H4 b" x( o* r3 G" z[trade-record-all] of customer) > 3 )
" }( h, I% a! U
[
1 P( m( l% |0 P: p6 [6 uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. G% e3 u# X+ X" e]9 C( d$ O: ?5 K' z. D$ y7 Q
]
# h# k% ]* ^7 a0 b( d. Alet j 0
0 d9 G9 C8 ^* K7 T- r! dlet note 01 D$ @! ^: }3 s. l3 f' l
while[ j < people]
, o; y. Y. L. x# Z; ?[
) \8 H' p. \- `* t3 s' Nif( length (item i
3 M, S- W* f1 t5 G6 H[trade-record-all] of customer) > 3 )
6 Y5 [* z  d' \( |( o
[3 ^. |' d% _) ]  I* C# W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ Y( S- D3 V& F0 h0 c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: ]) S5 ~2 e9 h" _4 G; f- F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& y. |# B# j3 P* m( S3 |7 `]
, c8 y$ [( c; }5 U5 ]]: d, ?/ \$ I+ b. g2 f
set global-proportion note
9 q" P( o' K! k' t5 j$ q( d/ h]
. R) |9 T  I1 d+ h' K& S* M* Jend
8 V9 W" f( |- u
6 F+ S# P4 p% L, W7 V: i7 wto do-trade$ {3 V, s+ B2 f5 N, n0 r) h% W
;;
这个过程实际上是给双方作出评价的过程
. [5 O/ P+ C9 R- ~1 M0 c. {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% O) z! N+ P4 ?# vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" P0 k3 c, W5 Sset trade-record-current lput(timer) trade-record-current
/ X; Z* V8 S; V+ R5 Z;;
评价时间
  R  T7 Z! M2 l, B6 X/ i- \ask myself [
  w  t5 r# {% T7 \# e9 [; aupdate-local-reputation# C+ p$ W4 K4 a! `
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 |" j/ X9 E) V, E$ ]]! g" P( u0 X$ r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% p- p6 Q( H3 @" T* z
;;
将此次交易的记录加入到trade-record-one5 \: l  ~5 e  M/ H1 K) M' p7 k
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) T' A7 ^# n$ Z3 B  ~: N
let note (item 2 trade-record-current )
9 q8 a" ?, L$ L" T$ T* A, H7 pset trade-record-current
( X' _7 u+ `" ?( _6 z5 G2 X(replace-item 2 trade-record-current (item 3 trade-record-current))
2 v" Z/ D+ N8 F: J, k4 E
set trade-record-current+ y6 d1 r4 N8 k6 v
(replace-item 3 trade-record-current note)6 m  w  D5 i% N

1 L/ X/ P# e7 O

) y; g% a& R' y" w6 @; {ask customer [
- ?0 }- p" J! D" H' c; \6 ~update-local-reputation2 a& n6 b1 m7 H% Y- v) U$ E
set trade-record-current
. b: y1 l1 H* e! G7 I2 P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! W+ h. ~3 N/ B. y( J" T3 r]% l, c: q4 v, s1 B7 ?1 y- \9 p9 V

6 U6 ?6 p( E" R& ~9 U7 e  P' ~

3 P& J6 i; N2 v; j  _8 k% jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 f( e: d7 G' J& b1 ]
2 w6 R, y: }+ }3 t. C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 b; T  u' V8 G4 J. @- X0 _' h
;;
将此次交易的记录加入到customertrade-record-all
. M  d0 B1 ]& J6 P  L2 cend* d/ {0 `% N8 J& R" }0 ]

; o9 B; P9 X8 O3 p. Ito update-local-reputation
7 e4 f5 k+ F* f6 M' {, yset [trade-record-one-len] of myself length [trade-record-one] of myself
  f; i% [* K% P4 T9 `1 ^% }5 t" V. L0 `! p* m2 x
. J" r& g9 i# d! Q/ b
;;if [trade-record-one-len] of myself > 3
4 s( j* ?* `: f7 |2 C
update-neighbor-total6 c# t# F1 Y0 y, K( |
;;
更新邻居节点的数目,在此进行; k8 |( i+ f# x5 a8 ~$ o# C* k
let i 3
$ j5 _1 x3 C1 Nlet sum-time 0
' T8 I: @7 |+ }: |, xwhile[i < [trade-record-one-len] of myself]9 K( M7 a: d+ C! f
[
+ G! _- F( @8 S- H& Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 A* {( S+ W; q
set i
2 l0 n5 z6 K2 L+ v! P( i + 1)
8 h; [; r9 [+ u$ q# S3 y
]  R- ~8 J3 K3 f3 {
let j 3
+ c( ]2 p  s! alet sum-money 0
! u% }3 |  Y& v) w; z1 F% xwhile[j < [trade-record-one-len] of myself]
( F9 {2 H0 T- p/ H[, B: |7 L* |3 P- ?8 A+ l- A
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)
2 X/ |. ^& {7 [) A: sset j5 p/ I* \5 X( }3 `: k. k' h
( j + 1)
1 g+ p. O( x& e: }0 S' M' F
]
, ?% N: c" l" Y4 I# j8 hlet k 3
4 t# P& \) q) q/ alet power 0
2 e' H! ?' m1 r$ klet local 0: D0 a! V1 N/ y
while [k <[trade-record-one-len] of myself]
. J2 ~; v" ~* ~# _# {/ p- A( D, L3 v[
4 P. T7 r8 N$ ~& c  ?+ a( z3 S2 Kset 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)
3 w; F" W0 z% q' h+ K6 p8 f4 ?+ A2 Vset k (k + 1)
- O7 z5 ^: G8 H0 J% K]
& h. A) d0 [( P% y( b$ R# o( Jset [local-reputation] of myself (local)
! U# N' t4 d7 R0 bend  J/ W4 n! t6 N

6 U/ K5 G7 M8 s' s- qto update-neighbor-total
6 r" p  w( E0 \/ y! {/ \: k. u1 }* v3 ?0 b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ V" a  b$ K3 Y( R1 \& L, l

  g1 F$ N/ p0 \/ D0 Q( B
! ]; H* x$ I+ g/ q
end3 F, ?/ I7 q* t
  c: w0 |9 b  s% }( c
to update-credibility-ijl
% n& F; v. \! R% p+ T" z$ B, [; ^& m+ L: ~. Y* l% f
;;
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。
8 {- x- n2 w5 Y9 Y- }' R' _7 o* Mlet l 0; v. X5 ?& C9 }
while[ l < people ]
& Q- Q* f; j* Q* Z;;
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
" J) q: H7 _9 Z+ {4 e0 S7 W8 V[7 e2 ~. a/ ^+ b2 d2 g
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)! Z9 i; I: y, U& B
if (trade-record-one-j-l-len > 3)
9 h9 p% z/ p/ j5 e% v! s[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-one3 \7 E8 @4 o1 p8 U5 o; I
let i 31 {8 z: |5 W/ `7 S$ T* A* C0 o8 J
let sum-time 0, R: x" t' T, X4 [
while[i < trade-record-one-len]8 j; A; D& O+ X  A
[
5 \0 e0 ~7 ?; `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 D+ V4 ]5 G; D7 S5 W' jset i
, g1 n2 Q, p- p: ]1 r! v( i + 1)

$ o8 n% h9 ~8 i: X8 k3 V]
" Q3 G* ~$ v: `5 olet credibility-i-j-l 0
; M; f- k" r  R3 s8 U; H0 ]* w;;i
评价(jjl的评价)2 d2 {  r- b! j7 L
let j 3/ l6 k" O/ B, z6 C: s1 k5 K
let k 4
7 ?" a' j6 w- d- V$ @' C# q5 E9 n) ]while[j < trade-record-one-len]- b: Z# e* Z' K7 ^8 o5 j4 ~
[, n* ?7 c0 a2 @8 M7 u$ L0 A
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
5 w. c- Y3 p; N) @" R: r; wset 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)
5 A: ?7 w. h/ B% N% a1 H5 \set j
! K! z* W8 i: k2 ~0 A$ w( j + 1)
' b) x8 v0 R2 S
]
) B5 p: q! S  q% Nset [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 ))
6 Y; Y2 D: l1 U( q$ v( c$ i' x# i& u
3 c/ q' A" b8 t: Y; a& Y' V
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 I. p! r. Y* r) |4 h% H9 Y;;
及时更新il的评价质量的评价+ N5 U: I: X* C  o" [9 E
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! o% H3 O5 G' v  Q+ S2 X6 v0 wset l (l + 1)
, E$ G4 F& l; L7 f4 N, P3 z]
6 p1 Y# x  i& {' b! y% iend
# Z+ F0 R+ [- d$ U1 d2 f: @! V8 A5 \0 S* [" s4 |  u0 I( ^
to update-credibility-list
6 g+ ~+ n/ N/ s8 z. vlet i 04 G9 Z' j" V  l5 E5 s6 w
while[i < people]! |9 |; s( K2 Q! X* H9 }) B: [
[! n% F0 a; L' o' Y1 n
let j 0
0 p+ O# c0 A% _$ a0 R' ^% O) ^let note 0
( |# j' T& c$ v; h! t; qlet k 0
; d/ t. N, P3 F2 Q9 O5 s4 u9 z;;
计作出过评价的邻居节点的数目" n7 g- M2 n6 B* s- {9 ]( m
while[j < people]& F0 O+ @/ @2 i9 ?1 N( H
[
# w( u' k6 U8 w5 iif (item j( [credibility] of turtle (i + 1)) != -1)4 v/ Z. Q- _6 o/ U! t) I9 R
;;
判断是否给本turtle的评价质量做出过评价的节点6 d8 L- _  `( L, J3 f: G  _2 P* t
[set note (note + item j ([credibility]of turtle (i + 1)))% X/ L5 [9 S6 ]. G& R3 D( O
;;*(exp (-(people - 2)))/(people - 2))]

' |& n  l" I8 f' S2 e' N6 Gset k (k + 1)
0 Z& Y' S7 ?' O) G& Y]' t7 d- [) r9 H/ ^  x
set j (j + 1)* s$ X+ G# j. S- @$ I9 s# q
]4 o; M$ A8 L9 O+ |) H  v- X
set note (note *(exp (- (1 / k)))/ k)" v7 W/ B' W9 ]; I5 x! g4 }
set credibility-list (replace-item i credibility-list note)
" h  G: x  p  ~6 B8 \set i (i + 1)
& \0 v; R+ R* e$ ~1 p; Y8 `]
! a$ }" l& o, L3 v( Qend9 l' y* _, s- a

3 _9 H7 h( u) Xto update-global-reputation-list
8 p* o0 S' d, q3 ^; mlet j 0
( ~3 T5 }5 S3 X3 y1 }3 ywhile[j < people]
( X3 ~. O& Y, ~: m, N# H5 ][
+ C# |& @5 r9 O3 r( i+ M0 clet new 0
% _* {* D8 E8 G* y6 U" Z;;
暂存新的一个全局声誉
6 x/ Z! t# F, h& f6 V6 J3 r! flet i 0
! g2 n7 {  I: [let sum-money 0
* m7 Y! {* i/ f0 u. C9 I- Olet credibility-money 0
4 Z7 s& E* L9 C4 Z' r$ T. Y$ y9 twhile [i < people]
5 C3 i, h0 @7 E; x[, D0 y: U. U0 }; Z0 z% |6 M
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' t5 K+ _( u# v! s. ~" [set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 W# R& t( O# j* m; z! ~set i (i + 1)9 D+ s$ v/ w+ M$ [2 k0 k# }$ c' p
]
) d- k9 D( {  Q2 L' Xlet k 0
# T+ n; @! h% qlet new1 0
" ^% U6 T' j) G6 nwhile [k < people]
; C0 x0 ]& I7 Y8 u4 h5 ][
" n- g2 x8 ~2 u+ {2 Kset 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)
& R8 u" {2 v0 U! U1 Lset k (k + 1)/ b+ n3 j, N/ x4 e
]0 H7 l& J1 F2 P/ y' l9 G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% A. z% `3 ]( x; ^; n2 m+ Yset global-reputation-list (replace-item j global-reputation-list new)) S- o% h7 U6 A+ w% c0 ?
set j (j + 1)
# Q3 s" q" v2 s! q" [. e' l]. b( K! g6 `: t! h8 g/ N
end8 w: |8 u- _' _
/ ]8 R. N- I2 T1 p4 O& c- D

  i" `8 s4 X2 ~! S$ p3 |8 S& s( e: X" r( ], f
to get-color
+ T1 t2 w9 Y$ y$ x* U$ n* S
% d3 D1 @" w: g" `5 h3 }/ Iset color blue

1 J8 c5 H1 ~" O. B/ cend
" _% N% P( |0 V  e
1 A# n  Q* S) G6 ito poll-class7 J# H8 q' z( u* ]
end$ ]# J7 X0 I& @1 Z7 ^" O+ G# Y
7 ^  \2 A; ]& J5 t7 J3 T
to setup-plot1
" u$ A. `" J, ~$ b+ [
& @* a2 H* D/ V$ s' {/ y" }set-current-plot "Trends-of-Local-reputation"

* o: l! z7 S" A3 l
! r$ h8 h1 k7 j. \( T3 Gset-plot-x-range 0 xmax
( x9 x/ O( q6 l6 J+ q

# m7 ^' N* X& o  U2 z4 B$ eset-plot-y-range 0.0 ymax
' @/ S7 T" B( ]" _
end6 L/ p& F& M+ B2 r* `) c* U" Q, ^
: I7 o9 q, v8 Q  ]- V9 P) E9 R
to setup-plot2  B  N6 o( [8 I) D# w7 v, X/ J

9 Z$ D* c7 f3 }& n; V  p- Z8 ^% kset-current-plot "Trends-of-global-reputation"

# \: a/ V4 S( M. p' U. o) H% h- D
, N4 F1 \! _! r( A: fset-plot-x-range 0 xmax
6 {3 ^* w& a) _# {+ P& B' X

4 e/ g9 D/ b8 h5 h5 Tset-plot-y-range 0.0 ymax

, B2 C( c' N+ T% Fend! V, V. @: K  E, L2 A6 G

, F! M4 M6 {( d) l- l3 I2 M0 o' Ato setup-plot3- O6 D0 D" q/ X4 A7 O) R) t: t
) r0 t* J7 u+ R9 t7 ]
set-current-plot "Trends-of-credibility"

* e" _% a5 ?" U! ~
, [. {& J8 @6 c; Cset-plot-x-range 0 xmax

* r" q* w; M" e2 o: \9 w" n8 s& [  e. c- E" z
set-plot-y-range 0.0 ymax
. B0 O& B: o* R' h: y2 q
end
9 Q+ c0 x* I+ x1 }1 m) A4 t$ K
" w% g' i' I! n! I8 }; D0 ^to do-plots' S/ \6 c, x% o- f$ ]6 C
set-current-plot "Trends-of-Local-reputation"
; k3 r6 l$ F0 i1 F; T4 y3 |* v; l, vset-current-plot-pen "Honest service"6 {+ q9 f  [6 x
end4 W6 V5 {* a& C6 G  C8 [7 X0 m
6 t7 ?0 P1 }& U9 z; j9 w
[ 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.
) H6 z: e' U  @: R6 M* G/ w' c" u/ W1 r" @1 u7 j
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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