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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:
  ~6 \# e3 r& `: {  [4 r0 hto do-business
5 x) B, W" i, a; X rt random 360
9 b  {* I. K  \3 G1 w+ \, l1 A) r fd 14 d/ ]( J5 y% T/ t2 m7 h
ifelse(other turtles-here != nobody)[
* m8 V4 ?6 ]& R; ~   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.7 A4 s  @, s; E3 R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* y. L/ ^# n+ S' C* {* g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. [4 n4 h1 ~. Q% E# h) V
   set [trade-record-one-len] of self length [trade-record-one] of self( u; H3 N, G8 h3 O0 X
   set trade-record-current( list (timer) (random money-upper-limit))/ x' l0 n7 c9 w) }% }; M
6 S* v0 Z' j- ^+ l
问题的提示如下:
/ K0 _/ b6 ^" }7 R9 @6 T
3 ~0 |$ A5 k' c8 [) \/ }( cerror while turtle 50 running OF in procedure DO-BUSINESS
1 `' g; ~% Z/ E! H  called by procedure GO  Q% Q- f$ Q" e5 _& c: R
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  Q% M/ L" i% r* _3 U/ q
(halted running of go)
& z3 o, g( ?: w! t. y6 I. p+ J( ~8 Q2 `# b6 v
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~~
, l9 S. g- C0 |9 I2 W& m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
& f2 u' C1 j) R: y1 R. qglobals[
/ {3 [8 C8 G! fxmax/ i5 Q' N& E. J& c  K- k* p( [
ymax
! h7 Y. p# _9 w! l1 n, M8 h+ Xglobal-reputation-list- \1 c7 n- l/ R$ r: ?
. S) ?# w2 S5 @0 ?6 ?" g
;;
每一个turtle的全局声誉都存在此LIST, L' T5 D5 Y0 d$ D; w' c! B
credibility-list# D! \, L9 H& O! W2 N
;;
每一个turtle的评价可信度" G7 ]) i( D) ]4 E  e
honest-service
" w. u. T, b" Z9 {unhonest-service
" h+ @9 M/ a, v/ ^! Qoscillation0 @0 l/ o1 u4 ~3 O& k8 z
rand-dynamic
) f( c# r/ t/ M3 Y- U8 K]$ J# h1 i  D! l+ ~2 G7 a
. ]# p/ x! x& `* ~# I. S: r- v
turtles-own[
- w: u! |  ^: S* b. M5 g6 wtrade-record-all
( @' c8 }8 y% I& K4 z5 B& ^+ @+ U5 V;;a list of lists,
trade-record-one组成& g" I+ s/ W: f& O& a& S1 ^8 o. r& P8 T
trade-record-one, S+ A8 ^% T: m- K
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- c+ i9 m3 r; m4 S, v. A$ O

4 F& t+ Y- H3 c- Q# l+ Z;;[
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]]
% }7 _, v7 [1 z: ^' N; {, M6 D8 @9 A6 Ptrade-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]
% R* K8 o- ?$ ?: `5 @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/ A" O* S2 p7 \, D- J/ _$ @/ D
neighbor-total' s$ @* W$ T" M/ }
;;
记录该turtle的邻居节点的数目- r( J* B* Z( N% X# R" E+ k" L
trade-time2 a' J8 l% _, ]( V
;;
当前发生交易的turtle的交易时间
# m! L9 p$ p4 h7 tappraise-give3 a2 W$ u* s4 k
;;
当前发生交易时给出的评价/ [/ k' s5 P  k) ?# |- G* |4 w: Z, v" K
appraise-receive
$ \3 K. P1 l" E2 R1 D$ b) _;;
当前发生交易时收到的评价$ N/ ~4 a7 v: J$ O7 ]$ `; b1 B/ E
appraise-time% @' L" m  J/ e" o; L
;;
当前发生交易时的评价时间: H! s% Z" x( ^4 G2 k) d2 U! k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) {, }9 s. W& ^! g& g/ etrade-times-total) K* k2 A  n9 O5 X/ @3 N1 S" H' s
;;
与当前turtle的交易总次数
6 X: J# X  h, T8 [" Jtrade-money-total6 `5 H. A7 G+ K; h" }: r& V
;;
与当前turtle的交易总金额# R- z! S3 ]: T4 M& S1 l" q
local-reputation$ B/ [4 C5 Z+ W6 T
global-reputation
8 o& x+ d7 t" M2 z( o% rcredibility
+ H! v; e' u2 H* V; u2 s  x;;
评价可信度,每次交易后都需要更新3 B7 f; Q! P( ?8 G! [. p& n
credibility-all# l2 L5 z) q) H2 r$ G( C
;;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 z6 ~; a0 D6 V, r$ H: F

) t# @( V4 }* 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0.51 j2 Z) a1 d( R/ J
credibility-one) e8 v# j9 p, X' U' e
;;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
* f" S2 ]0 z0 \: W7 w) Z* V, Zglobal-proportion
$ @. S7 R0 D2 G7 h1 {9 |customer
+ U: I# s" ?' w2 jcustomer-no
& A- v2 z5 ]& A+ O: F: utrust-ok8 M, u4 K: k7 t( @
trade-record-one-len;;trade-record-one的长度7 Z& Q; ?# L% S
]
/ W9 v* ]& E" k2 T* W) v4 S( ^
' f/ h( }; v) a, u' p;;setup procedure
0 v- U$ k# b  O5 m, f% d% v. E) Q/ f9 S$ T2 s
to setup4 ^* M" S9 |6 M9 Y

  x5 j% \" H  ~/ J% X: Nca

6 J5 S% V" j% z- M, P
$ B0 k1 S3 |) V: z# iinitialize-settings
) X4 \- m* J! N5 Q8 {: }
* Q9 C, O* R; ^/ t; w" [
crt people [setup-turtles]
  B( q3 M& y1 V: |9 V
" z/ [7 g* m, M! p: L& p
reset-timer
2 M% K* B( b- z- ?
3 ~+ l/ m/ x' q4 z& t
poll-class
7 i: {+ F7 T7 e6 H, h/ h
4 i8 w# ]( a$ a, _
setup-plots
  S7 j- U) q2 X% G9 d* v3 n+ w% a* |+ R

, q+ S& v. V0 `, X0 ~! [do-plots

! [% o& p" _: t1 n, X! _/ Jend
5 c% {% r& c" {  o6 q2 D. j7 b7 b4 o4 h
to initialize-settings3 c2 \, ^8 z* S. v! v( N# i1 w, n
2 M. S4 S7 U1 i
set global-reputation-list []

1 [, i1 [% p+ |/ q1 V+ I. {7 F) ~! R& M' T' W: x0 |5 p/ y
set credibility-list n-values people [0.5]

2 N- K$ c- q5 a" \- Z/ w% k6 r0 G
( ?' ^0 |# I' f+ \/ R( I: Z4 fset honest-service 0
) d, H/ g! \' y1 A
& O( i  [% G! B4 m
set unhonest-service 0
% I' U( u/ @  R, h) O8 ~
  U3 Y7 ^6 @$ s: W9 T  ]6 b$ E
set oscillation 0

' y. w: I: r8 C) i: X
; k9 }. |* N- S1 {  Kset rand-dynamic 0
, a. a5 S! X5 o9 g9 C/ T
end
0 {3 a% w' Z* V5 A% B8 b. x
# q3 u. h, b- Y1 _, E, N" Ato setup-turtles
- c% U4 x! G$ Wset shape "person"0 w) N0 \. L8 t' U5 ]
setxy random-xcor random-ycor
( R$ r- \( D: W5 S, y2 a% xset trade-record-one []% G0 D& o2 G" U4 _- {
8 X4 D7 g" m! u0 T* n& s0 Q
set trade-record-all n-values people [(list (? + 1) 0 0)]
, k0 ]9 ^6 O/ R' m1 j

- ]+ s; }* |4 _) Zset trade-record-current []
# C# Z7 J" F9 V7 }  J7 w" |set credibility-receive []
  ]* M* h2 k3 {6 H. K* ~3 f3 lset local-reputation 0.5$ @& q& Y6 g9 d7 X) X, B
set neighbor-total 0
. n+ ^! ?( p4 }5 q5 l8 z' Kset trade-times-total 0
# @. y+ \% I  ]( z( Bset trade-money-total 0; i  O5 f4 w! D8 i
set customer nobody
2 {/ _' D1 K" Q/ yset credibility-all n-values people [creat-credibility]
# B, i6 s6 Y1 e- p  Eset credibility n-values people [-1]
1 S3 ?3 k7 a) G' M7 L4 iget-color
0 J% h1 X: @- }0 s9 i$ S

- P8 [, U9 v" Gend1 Q0 t! v. }. o7 Z
2 a# b* l! _" H: X8 M+ C
to-report creat-credibility* G; w2 X. ^* O3 S  O
report n-values people [0.5]
2 c5 L( s! S( C6 Q4 mend
; N/ N/ K. j, e) j. ~( }6 u
. ~2 B3 h) ~% {& Y+ h9 \7 H. Eto setup-plots
/ n$ Z& }6 a2 Q  p5 R% \; R1 D/ H" M, @) M; ~' A
set xmax 30

6 u- [# }0 U3 W* R! I$ p4 C5 @% x0 B
set ymax 1.0
- o! A3 Q3 f( m& s( v7 r5 L

: @! O. o: J& k/ m+ D6 ?7 Wclear-all-plots

. x  ~" {" i6 A% v
1 q6 G" ~1 [! Z8 E; Y3 \2 [setup-plot1
, }( o/ p6 e7 Y. C
% t! }/ b7 J+ |, X7 X& b
setup-plot2
0 K6 F" R+ }( `! r$ f+ l) ]
1 [' M' M+ Y0 b  D) s) \* e
setup-plot3
5 c! F9 m! o. |1 \3 d
end
$ C! r; x/ H- I- N9 E
2 J% W& {6 w9 x9 s+ g4 ~0 V;;run time procedures$ \& _+ b& A+ J( R' J
& c9 j+ y; ?! K0 E
to go: l7 h3 |' L0 ^% i6 w4 ?
2 v& V9 I+ w# y. J
ask turtles [do-business]

/ ?+ X- u# H0 Jend' {- Y; b9 z$ {% M

: z" z) r/ R$ x. s. X6 N7 x. K; M6 uto do-business
; A) |( T3 h/ F7 v& g: t

' ?" E' Y. J- X/ O& ~& h( _4 [7 x' n( v! U
rt random 360

5 x: p! d/ i; m+ g4 g6 G- D. n- I1 S& R" `! U0 N
fd 1

. Z5 Z0 p( Q1 P/ k' \# N
' [9 A2 O5 j/ ?ifelse(other turtles-here != nobody)[

& L% m; }  L7 d0 n1 q8 H0 J7 L: ]5 B  B7 ~5 w7 h( f# L4 f1 L
set customer one-of other turtles-here
4 \9 U% k$ d( p9 \4 _1 S

$ H. D0 |: ^+ v& `- ^;; set [customer] of customer myself

! V+ q, Z$ x  ]3 ?- `
3 [" ~: _- s1 D# R: F; g# xset [trade-record-one] of self item (([who] of customer) - 1)1 \- U/ R; _1 O* v/ I7 n
[trade-record-all]of self/ T  X% q6 L* I& g! S) o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ X) |; g2 |% Y( V- ?% x- G- p% ~

- g2 j1 B' Y% X) _* j8 I7 kset [trade-record-one] of customer item (([who] of self) - 1)1 H! A3 N: w) x8 e6 f7 j
[trade-record-all]of customer
( b; k/ u7 X; l3 c/ u4 ]& w0 Q

" D8 G; L6 B* H- Sset [trade-record-one-len] of self length [trade-record-one] of self
3 l: {; Q. R+ K! E
+ V) C& j1 x, Z; Y8 i% D$ m+ m
set trade-record-current( list (timer) (random money-upper-limit))
7 R8 z( D  N9 a! R* f4 J

( ]% p; ?8 U2 F3 Z$ y5 q- Wask self [do-trust]6 n4 y4 ]8 o- ^* S6 p5 s
;;
先求ij的信任度# E1 q  W4 E; @7 h8 _, x. y  s

& T0 Z* v- f8 O! B: W6 n# w6 fif ([trust-ok] of self)
, A+ [) R* Z2 Q;;
根据ij的信任度来决定是否与j进行交易[
$ R9 ~# u5 i/ G- ?4 Q/ ?- X: {! A* ~ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# F7 B4 F+ }  q/ J( [- f0 d
2 a: Y2 R+ R3 c" s$ f
[

+ X, @/ i3 K$ L! d: i8 U  m
+ s7 s, c' i/ o9 n# t) Gdo-trade
% E6 L; ]! R% p
1 N: P/ A4 j6 s; ^
update-credibility-ijl
! b4 }  [2 T$ u6 F5 R- Q! Y+ b

, E$ D, A; d9 Rupdate-credibility-list4 u- f  A  H  H* w' t4 {* c

: W# l. G) O# l1 P) Y
, Z. B# _( ?9 Q$ L' Xupdate-global-reputation-list
8 f4 Z: {8 v% ?/ \7 k0 o

' y1 x( u& w- G1 u5 k  Fpoll-class

# I+ y5 I( K' \3 p
4 X3 o3 B4 a9 L0 uget-color
1 R, d$ Y7 k) b( ]* [

% f3 D; |9 \% ^# a+ e; Y]]
9 T7 s& M# V" i1 B8 d: g4 t
  n+ Y2 E" [5 c& N( q! W& s! z;;
如果所得的信任度满足条件,则进行交易
$ A* f; P! ?' V6 U9 y  A
2 B. V" k  d1 F9 H- ~) a" U5 u1 X[
" U" L8 t% L. y1 }: M2 ~

; B+ j: F8 a% r1 y  K, i- lrt random 360

  J  q/ Z* p9 {: y/ b& p8 b$ z5 B3 n- o
fd 1

( E& J  g1 T7 `$ W4 u
- T( f* h1 ^2 v+ n6 x. P]
/ w$ i' A' N* P2 F1 V0 s

1 T. d$ j* a8 u% H9 e* t: zend
1 H. Z7 U  y+ Q3 Z. ?
" ~) F1 B2 N4 t' V# M
to do-trust
9 X7 W& A$ n$ q$ m" @set trust-ok False
" v: M5 A' i, {
. m/ c" f. A$ ~" P. X3 ?6 w% l: B

, n$ q' n* ?: ~/ _$ M/ _$ Alet max-trade-times 0
9 ]! {3 V) @# \. @# `2 Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. s. y4 l9 w, ]- {
let max-trade-money 0
& V+ f: s, I0 g* L; Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; j' z1 [, t5 b: e( llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 ~6 v2 ]. |* B% |; f' E. ^1 B
- q8 A3 V6 m  T# q
2 r. H8 O) ]; y( K3 P' Y+ I
get-global-proportion0 j9 C8 y2 V% m% E6 r0 l9 [1 @
let trust-value
9 Y; A/ `6 Z  X$ ?8 b$ Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( Z: i. r+ |, {, ]' [) g3 X
if(trust-value > trade-trust-value)
- P& Z7 H5 N$ s8 {: n" G6 l, ?[set trust-ok true]
( J( t7 `" A& v$ B: A! |end8 e& ?6 n5 r  S

4 c: O1 S! B5 K( Q4 p, c; lto get-global-proportion2 ]+ ]  y; B! {! I( |" K
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ y5 _7 B8 D7 [" {! _/ T, O[set global-proportion 0]
! X8 o, z0 H$ w% C& H5 B2 h; U[let i 0
6 R6 `6 E. z/ zlet sum-money 0
' d4 p( v( i( ]' A2 I5 Hwhile[ i < people]- R( s# Q5 P" j- Z3 P. y3 r" |% |
[
5 }: P$ q# d( K6 j2 Zif( length (item i
" D6 a. l: i7 H. B[trade-record-all] of customer) > 3 )
( _* l, d, C7 C; I0 l
[/ C/ A) h5 V2 i  k' T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  m5 c# a. G: o], D7 Q, ]2 V$ U1 I9 P; B
]/ G  h9 }& c% H. G7 V6 Z
let j 03 `! o0 S! y" E7 B
let note 0
7 v- X' a8 v+ x& I% u9 h7 c/ iwhile[ j < people]4 V6 R& P6 \8 E- V& B
[
4 |7 j+ Q& f2 }8 Mif( length (item i
3 a8 p1 B* W. u  l3 Q; y6 r" J[trade-record-all] of customer) > 3 )
+ v2 E" }( O, M# W. `
[
3 Y$ x2 A) e6 tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 A( r8 X, \3 ?0 d/ y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 D9 U7 y, K* p3 b3 H' w: p  {[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' x' Z# {5 K0 o% }# P]2 ~( |6 t# O2 y5 g, G. j/ C
]8 w* ]9 g3 ~' ]! J( d" R
set global-proportion note: K0 }  p0 @- r) x, d
]
4 Y, c; H  f! m) J  S4 s: Wend: [6 W' x5 w' T4 ]+ T) Z3 F

& H3 H( J5 \. r/ a1 S. Uto do-trade5 X+ _% A; p" p: t+ m* Y
;;
这个过程实际上是给双方作出评价的过程  _2 ?2 K# r5 O# w$ B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ U! X1 q! P0 K# }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" J9 g" F  ~1 `* z/ D6 r, U
set trade-record-current lput(timer) trade-record-current2 m& `' X, d, E! Z- C
;;
评价时间6 F- y1 X7 C6 P" {. L
ask myself [
6 t& H4 z9 w) M' k" Oupdate-local-reputation7 ^3 k; k  b. j* a1 ]
set trade-record-current lput([local-reputation] of myself) trade-record-current/ a* m; d0 V! \$ j7 B0 Y& g
]
0 F( F5 Q1 }  i- o# l7 T& zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; h5 L# ]; m, f- r* ]& J
;;
将此次交易的记录加入到trade-record-one
& q4 y; W& _' F: C2 aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 o3 n( N. P  O
let note (item 2 trade-record-current )) i( u; G! D7 F2 [# y: z' E0 ?
set trade-record-current% S& n) c% l$ t8 L* ^) ~) x
(replace-item 2 trade-record-current (item 3 trade-record-current))
( D: c) M: n" x1 f9 ^" _- h, X
set trade-record-current
0 A2 u. ?! x; j0 K% A2 t: W: w- n2 f(replace-item 3 trade-record-current note)! c/ \" w. ?! |
$ y- `' v  O4 t3 Y* ]
: f, x4 g. N1 W/ l/ |
ask customer [
" C- l# u  N/ W2 o+ ?+ u: {. Gupdate-local-reputation
3 p& o% y. s% Y' r2 jset trade-record-current2 k  C  B% s7 q  i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" v3 ~  _2 e5 ]2 P- _: b* x0 t
]
- H& P( S# D9 f# W9 G/ i4 U; A
/ k6 n) B, u) x7 W7 A3 \" _
/ T! U0 P9 P+ a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. w" ~9 A% Y! f/ @, ?8 E* c/ I

4 h3 o$ {3 P: yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 p" a# c, h& ^' H( N  I
;;
将此次交易的记录加入到customertrade-record-all
4 p; X2 N. P8 C/ nend: i2 ^( x3 W" B4 U
( D2 O$ v  k5 W* Z. t, j
to update-local-reputation
) D- d2 _7 p" w4 J" [  E& Hset [trade-record-one-len] of myself length [trade-record-one] of myself6 J$ K2 d# H6 \7 B1 R+ a; [

: G1 J$ H( ^6 |) U4 |6 Q# V7 V2 ~! B( _3 U7 w  R: g& k
;;if [trade-record-one-len] of myself > 3
# I' L% J! F  k( B0 \
update-neighbor-total# m4 h6 a6 J9 D$ h8 n8 \
;;
更新邻居节点的数目,在此进行
. K2 J( O/ q5 r$ T6 Alet i 3- c1 A0 q' T( x( m# x: t
let sum-time 0
4 @  v# E# [6 j8 a0 Y, h* T" uwhile[i < [trade-record-one-len] of myself]" C: }1 H/ A$ q: }* f0 ], U' j
[
, v  h" k/ l# I% p/ mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 Z' A+ y: g; Eset i
7 \: u$ q/ l8 {0 ~1 H1 T( i + 1)

$ D2 c) i  [/ Q$ @/ N) R8 _; Q]9 Y  \, g& Q: w: s; |2 f
let j 3
# Q, S! M1 }( ylet sum-money 0
8 k" [$ G4 W: h' Zwhile[j < [trade-record-one-len] of myself]
- M; }+ h! E# g/ M: c[
: o7 z& C$ I" s9 p! fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)0 s4 F9 f$ z% Z; o
set j
" K, m, O; [* Y( V( U3 b8 Z( j + 1)

: `0 {- L& R* W/ `' C; `]. d+ B! f: H' K2 _6 G; `9 ^7 t
let k 3
0 u6 g+ Y: d7 K& K' ^9 hlet power 0
( f" w3 d; ?$ _: ^/ ilet local 0
. c/ ~! F1 w6 T# w# }1 ]1 Ywhile [k <[trade-record-one-len] of myself]3 O. ]" v8 s$ H2 l& Y
[6 r! |* [! J' ~
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) 8 \& g  `8 B% S1 O* N( Q7 J
set k (k + 1)1 n$ ]% W8 c* K" b5 s' J& M# Q
]( J1 [, I& G! G
set [local-reputation] of myself (local)& t& l0 t1 K: q! V$ n0 Y. B
end2 [; c& S5 p  c
7 J' G6 H* u* x7 m1 e$ W  N
to update-neighbor-total
5 L# g0 |" W1 a) M6 t; @$ X2 z/ k
& [, a/ r; r8 o: i# eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* t2 E! I) F  @, T4 U9 a0 |6 ~. J; X: U# u' p5 Q' x

, v1 m3 {; s- T3 {; v" X+ jend# \3 A+ x  N! E' I& ~# m: S
" Y( a/ q5 L4 M# n
to update-credibility-ijl : Y' I! p$ l: S& E. \+ z( m6 b5 H

% J2 F* \5 e# 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。7 h# t  @: |  @6 b3 i
let l 0; V, H3 x0 g4 f4 S
while[ l < people ]! [* }# V8 k' O. c  b
;;
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5 D( \- E3 `8 M! R& ?6 Y
[2 `: ^3 X0 H! v6 I; X' F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; e. r: p% S! E+ L/ Bif (trade-record-one-j-l-len > 3)9 l3 ~  |& @9 g
[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-one5 ^2 e5 n" `. I: q' S) b
let i 3# \- ]: o- j+ M0 c+ w6 g1 O
let sum-time 0
7 ?2 H9 L) Q, B. l% ^# ?( N" qwhile[i < trade-record-one-len]; w: i. w2 y, r! s& z. ~
[3 w2 Q4 X; i3 N" H+ E, u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ D0 b) H& B) K' D6 ^
set i0 e1 k1 q% ?) M2 F
( i + 1)
, D7 a. n% {  w$ r5 S4 ^3 p
]0 T5 z" d3 b8 m3 i" Y  d0 M
let credibility-i-j-l 0
- a$ c1 {7 e& };;i
评价(jjl的评价)
' f5 c! s- j3 S6 mlet j 3
2 W6 N! W6 J% `, h: c" @let k 4* @8 y, j* ~4 x* R9 N2 J
while[j < trade-record-one-len]
9 a- ~- ^, m$ |  F7 O[
  h2 N$ [2 u$ M  z7 l! E2 }& @# m9 @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
& @4 D3 `% C9 n" 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)
, W! g# `- x+ Lset j! G  A2 a+ s2 M4 f
( j + 1)
4 @: h% r! J% T- j
]$ T( w4 O6 j  v# H9 r( z+ k% ]7 e  u
set [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 ))1 N0 w+ U, x. f1 V! L! j. v

6 r4 `! }. K! s3 j' N

+ s& n0 W* ]) u- Z* ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( W1 T& r' B2 W7 Q' i;;
及时更新il的评价质量的评价
2 m( N0 C1 p; _* v' R; tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 W3 C6 T$ |# z. Lset l (l + 1)  m$ `% ?' e$ c- B4 X* H+ U/ v
]
! T8 Z+ d, C2 k( i/ Wend
" d$ p4 a; @8 j* ^" {$ @
1 i/ z" a3 G) C& E: s" zto update-credibility-list$ a8 J: {% M2 r6 O5 p" `! C" i* K
let i 00 a/ M3 i- t- D  V: X
while[i < people]
( @2 W% M9 ]. y7 t[
) C+ t( l; L' e0 ~* n4 }3 J- B2 ?let j 0* h4 r: w: P9 z; I0 K! F
let note 0
4 `+ E. c* P* v8 ^1 Jlet k 0# r' P3 a; O( c9 X0 U
;;
计作出过评价的邻居节点的数目
" I1 I) S; Q. |while[j < people]+ N7 R- E% J6 ~$ Q" x" w* a
[; X6 X6 ]) f. G6 n, _, I
if (item j( [credibility] of turtle (i + 1)) != -1)2 k/ |1 P3 D* u& [! R
;;
判断是否给本turtle的评价质量做出过评价的节点, ?! t3 J" L1 p2 v" E
[set note (note + item j ([credibility]of turtle (i + 1)))$ n8 {. _5 D4 p" j  k9 O; n- p
;;*(exp (-(people - 2)))/(people - 2))]
4 s( R" n# e' q
set k (k + 1)
, G: B" \: _( b+ v, S1 ?  Q! Z6 W]" t* N! Y% R! j; p' Y
set j (j + 1)
  w. K3 M& c. U9 m* i7 p]7 p/ O/ V5 g+ {( R" h* M" |
set note (note *(exp (- (1 / k)))/ k); f+ _2 J% d5 t
set credibility-list (replace-item i credibility-list note)
/ B5 U6 l; I, {! u+ N$ ?1 cset i (i + 1)
: B8 `+ J5 l" t. v2 K! d]* D0 s* R% u8 ~2 H4 i- r* ]
end
0 y, `9 [$ y  A% Z0 K  g, K1 h, w" h8 D8 [! D
to update-global-reputation-list
8 F( R% h% \0 Y' D- _" x8 Z5 @0 olet j 0
4 }9 ^0 D+ D9 g" m0 d2 d! ]while[j < people]' L2 H. [- _: O. }' c& H# y
[
1 z. g# F$ b( `let new 05 `4 U: G+ B# B0 e) |' _- I- T# [8 t
;;
暂存新的一个全局声誉* y! B# H5 Y' _- Z5 u
let i 00 W+ Y' K' I# w; L# \: g
let sum-money 0( L% [+ k" y' i8 [( P) S
let credibility-money 0, O: A/ w9 ?; D2 f1 r1 ?, c( ^
while [i < people]
. J& B0 Q0 g- R3 h$ g[
' h1 r! u3 E3 T/ h2 U/ ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 ]+ l. L/ Z) t& H6 d) \4 k7 qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' r7 T) i) i2 Z4 l2 vset i (i + 1)' x6 m0 l+ N+ f4 c0 {
]
5 O2 E% r/ p5 U' ^+ z( Wlet k 0* `. V* F$ F$ ~$ w9 a
let new1 0" F* }: q. s- x/ ^1 \' g0 W9 d9 G
while [k < people]
$ z9 Q# m3 u$ G  x- w) ?( T[6 k" [  Z' ~4 D
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)
% W& g/ [" ?4 ?set k (k + 1)
4 l8 S# G! e2 @]
/ [! {" o# P! j4 L7 k! z7 H7 Wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" S' T6 k% }; e3 r2 ~4 L) W6 pset global-reputation-list (replace-item j global-reputation-list new)
( v( N, ^2 H% L0 V4 s& Kset j (j + 1)% ?& ~1 B0 {( \/ z2 x4 ~1 `. ^: P7 t
]7 T5 @- E! P) z
end
3 B$ X3 g/ W$ }$ |, g: @$ l/ ?  j' s& U! u% D0 @

% ~( a4 D4 k" Z, y3 v' O% S0 B
+ X9 F, R2 U1 \! f1 c! Oto get-color
/ @2 m% L+ `1 k# E5 n% _1 R
5 ~! I+ F- d3 K; [% r4 dset color blue

" L" M1 D$ d; x! Y1 @1 Y/ Fend
* l# l* z/ p; P& m
$ |3 {+ P& W/ h! _+ J: ?* ]0 Ito poll-class
8 `( ~' o3 F# ^# x' nend
: |3 o$ N! f0 }) W7 b! j
- w. Q8 |6 Z$ k% Tto setup-plot1
- A6 ?; w& N7 p6 ?2 P+ k; T: x, W) Z% {' [& n4 E
set-current-plot "Trends-of-Local-reputation"

: U: `8 h: U+ I3 c# Q. M# F" n- \1 d  k6 z6 S3 U  @# }  p8 x
set-plot-x-range 0 xmax

( u6 _9 u- V& u  q. f+ o% Z1 K- ^7 {, P% l3 c4 Y& i/ j( N
set-plot-y-range 0.0 ymax

  H6 q2 i3 O# m1 mend8 E$ [1 N" t- }; O  U) K; P
! ^+ o4 ~0 h* |3 ~5 b% U
to setup-plot2
6 c; t3 _+ g( c) ^* D  i, n, m( D" ?3 S" \- x
set-current-plot "Trends-of-global-reputation"
5 X" A9 D7 D. V0 F$ M0 m% x6 |

& P8 \7 L9 r# R8 wset-plot-x-range 0 xmax

! j! e$ C' v' E- {
6 \' _# a. }+ u8 e& ^set-plot-y-range 0.0 ymax
6 D, G2 o9 \; e) Z* n
end
; I; |8 \7 U8 ]4 _- z% r, D0 X
1 i0 _, O- S$ Y3 J6 e, }to setup-plot3
1 H9 b5 \/ `2 Z  l4 h) l  Q1 N4 y# n1 s: X$ p# m5 J
set-current-plot "Trends-of-credibility"
. d/ @6 C* O$ q0 Z: g. V! @0 X

! J! t% W- e$ k1 i* A, n( Kset-plot-x-range 0 xmax
& M6 e) L' T2 k$ f2 c: u
8 [! O6 T5 h5 \6 ]. H, g
set-plot-y-range 0.0 ymax

' y, |6 M2 r3 x" Jend
  L1 w/ m% o; F* X) Q1 t
& n; ?- O$ B9 ?# E+ ^9 V3 ^4 {to do-plots! {! k: o/ K* S) F) |9 i! W
set-current-plot "Trends-of-Local-reputation"* x/ q) q/ B: w9 y5 Y
set-current-plot-pen "Honest service"* j2 F4 ^, b6 s0 b3 y% g/ [$ x/ @) k4 O
end
/ w8 K/ W6 V; @( x
2 Y6 F% P0 W" i[ 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.
. z- p' P6 A. y/ n
& M8 T! G& B/ `. n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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