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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:
1 D7 V  b2 \* S* d& e/ l& Eto do-business
* `5 k$ \5 w* t3 j. O3 d! x rt random 360
& y% N3 ~; i& H! w; i' Y7 R1 c- p fd 1
- }. H( T- L( ]* |. S5 F5 }3 B ifelse(other turtles-here != nobody)[) J& D, U1 F. }2 h: H* v
   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./ q# X2 J- ]7 b' n' m: W
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 `- |" o, @+ ~0 P1 l9 W, I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 o! E3 X9 i" {* v   set [trade-record-one-len] of self length [trade-record-one] of self8 x: o6 A0 j4 n
   set trade-record-current( list (timer) (random money-upper-limit))
, s) P5 a) m7 s9 U# D/ `$ D" s, L/ ?, |6 h" y) B$ z- A- [
问题的提示如下:
4 E$ ~. p4 N1 }% p
' `9 U6 O0 X0 ierror while turtle 50 running OF in procedure DO-BUSINESS( X2 z% A6 @  H% Y" ~9 c
  called by procedure GO
) G- f9 E# h4 ~OF expected input to be a turtle agentset or turtle but got NOBODY instead.& S8 q, d$ p7 `; X7 B
(halted running of go), {% y% D4 ^9 @- V+ X) P# u

9 Y6 e7 t& f! I# a% P& Q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~~, y3 R' Y0 X% g- Y5 E
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
6 M5 j2 N/ _$ f8 ?' t/ k$ }globals[6 i) V% \7 `6 z. r; p( _$ S! `  I
xmax$ I6 S  b  `, }8 n1 `
ymax1 n0 R+ s0 K0 q5 Q0 P0 Y$ ]; I9 M" K, c
global-reputation-list5 u# q$ X2 G, h2 t3 ~
! b% b7 R- Z, Y8 {- B' G$ u
;;
每一个turtle的全局声誉都存在此LIST
9 [2 ]5 s6 E2 c/ y: x) L+ ^! A% ]credibility-list' J: U4 B9 k# T% C- R4 L, V
;;
每一个turtle的评价可信度
: F* s& x7 g* y" S: Bhonest-service
9 ^) V$ P* _, t  z2 O6 ^unhonest-service
& i: I3 t: Y# ^! W. X! uoscillation
. S2 u6 M; O0 b% Drand-dynamic6 O# \$ O" x' m, L% V
]
' U$ x1 O, F* {( F, A8 Y- {- [% B$ N4 y
& v) Y/ M. l1 ^9 N+ P$ F3 eturtles-own[
* D0 n% e" C: T) u8 M; S1 \; Y* @trade-record-all
8 J! g, L: D3 O$ s4 Q;;a list of lists,
trade-record-one组成: {* \# W. l. H) z
trade-record-one# r0 Z% f) T7 D4 H6 Y  v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 G" e2 R  y! A( P9 C+ b" o/ N, w* ?# j: |( s' P
;;[
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]]
3 |+ ^: t/ K. T- s  I! d* h: Ftrade-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]
* t8 a: m) K7 Q/ ~' Pcredibility-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% e6 b& {0 u1 o6 @" r/ L* O& B
neighbor-total
( u* E, I8 N- g# e; K$ E;;
记录该turtle的邻居节点的数目
8 _+ o/ u, w( strade-time
7 o  T/ L! y% [, e;;
当前发生交易的turtle的交易时间( ]: P+ O& S7 @& y5 q* ]
appraise-give
' E5 b; Z4 u% n& V;;
当前发生交易时给出的评价
* e8 ^; y/ s1 w' t* bappraise-receive
4 W3 _; X" {; X5 N% b* };;
当前发生交易时收到的评价8 _# l8 V. o) b% }# p1 v- m+ b
appraise-time
6 V! K* h$ m5 d) D; y+ t$ q# c;;
当前发生交易时的评价时间
3 Q4 }5 R9 S8 p, zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" q& l* W; o" D7 w/ z8 ftrade-times-total
& }1 \9 Q3 q' q( H" u0 y5 B;;
与当前turtle的交易总次数
5 O) B' A+ p; T' Z  v; g0 I' w# F9 Xtrade-money-total
) j3 y: t: f1 o  \" \! O" ^# J;;
与当前turtle的交易总金额- Q# f' ~: Y- f% l
local-reputation; S5 ]" e5 J1 V( f6 A5 w% ^$ h
global-reputation8 C9 N9 C/ p' O& t
credibility
: K% A  n# m) i! j- C1 {7 K;;
评价可信度,每次交易后都需要更新
; t1 ?! u. A4 h* n; lcredibility-all6 B" ~. n8 K) C9 V2 p
;;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
! Z6 I( V- J: J6 A; E2 X) ]& n$ p7 c
;;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
# d$ |. D" N/ X. Y7 ^7 ~credibility-one  j( H; C- o# u6 [8 T+ Q7 Q
;;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; B; i3 h, A3 F& D- u5 n7 i# w, K2 j& P
global-proportion* m: w' I( F4 @0 K, a" r9 z9 w
customer
  u: A& j9 ~8 x3 n* Mcustomer-no
" v6 h) x" c; G- b& otrust-ok3 q/ x& z; n) a9 t
trade-record-one-len;;trade-record-one的长度
3 N' `: W( |6 W0 O) c( q9 p! o]
: Y1 M4 L$ _( d# C9 W. c, P# b% H6 o  h; t1 X7 F# X
;;setup procedure, i' c0 f1 x' k( _

& T" N- e; `4 w/ t4 M  `2 a$ fto setup1 D4 x- U2 y5 F& `% }7 D
/ m8 u( k1 ^0 I. r
ca
" C" s. @  q* @5 w6 O

' G) S7 S' b# ?/ @. m  ]- y4 b% yinitialize-settings

- s+ B. ^+ f9 V$ c( B, ^% k* B$ d8 C& Y- V1 A
crt people [setup-turtles]
7 K) {5 h9 y) x

7 o6 ?& p$ V' D; N$ breset-timer
1 ^5 c( A0 f. e3 B+ E4 b: n# r
. M/ G9 {3 Z3 ]( J5 P' I; f
poll-class

& E- y* D* N6 Q8 c9 B; Y" U) N9 u0 l% J3 n1 w
setup-plots

, g$ g2 B9 o, z; z* [9 M5 Y& z
4 `& ?+ @. c8 t8 d8 ~1 jdo-plots
' K( A$ G/ y" T3 C
end
+ R0 o5 i- D  W! C$ B2 n2 i. y3 P( ?% S; R
to initialize-settings
! b8 z" O6 \6 S4 ?: h; E
; A. x  T) Z& E  i2 a& ^set global-reputation-list []
% }) y. B  S. K% d+ V
- f- h" Q( a. Y3 J  b/ Z7 ?
set credibility-list n-values people [0.5]

. E/ s7 s/ d8 B, D* a6 F& a/ `1 W- v5 C7 A. T0 A3 n
set honest-service 0
- K8 t& L' H  f, t& h2 l! f0 d
1 J" c" m7 V5 J  C
set unhonest-service 0

/ ]# q) @3 n& f& p' n! g9 p1 P: y
" i; T$ S; e" P; _: }set oscillation 0

/ l, G( C8 k! a% {; m' o! G1 [. w
2 L/ s( D6 O5 |+ dset rand-dynamic 0

7 `, A+ A) Z6 C) x5 }end
5 j8 e+ {. w: n2 d5 u- l& B6 h# s: y: y9 [- u- G5 _) \! b
to setup-turtles + W% ~6 \2 X2 m8 P: u
set shape "person"
; J1 y* E0 S& B- _# t7 \+ dsetxy random-xcor random-ycor
4 V2 s' D& N+ x7 h2 s. v; V% wset trade-record-one []
! I3 `" `' W" A3 x: ?! i
( d$ M* @8 [4 s6 H+ S
set trade-record-all n-values people [(list (? + 1) 0 0)]
& ^3 b3 B( I, J0 q1 A) l* @. h

8 }! G. h' y# ?1 z: xset trade-record-current []
& l2 z5 T7 W, Q  y+ A4 e9 U: E: k& kset credibility-receive []4 J6 ]; L9 W6 U6 g- Y0 W
set local-reputation 0.5
3 @* H6 G1 G; B6 n& Nset neighbor-total 0
! l8 O* c" T  W/ z$ |8 m7 m7 xset trade-times-total 0
! A+ [: d! J+ n. E% x' y+ wset trade-money-total 0
  c7 f, {' [2 V" @* u* lset customer nobody
: d# }4 o! [1 D4 g4 a( |set credibility-all n-values people [creat-credibility]
3 A. c7 D  A' L. L# T" n) u; pset credibility n-values people [-1]
9 k3 _2 p# [7 M7 c3 v( T$ Tget-color6 h9 _0 ^, [) q
+ b) i% n7 j9 W$ [: w% T) |
end
5 l4 m) n7 o( ^% y5 r1 u* g+ D+ A4 t+ \* x6 E
to-report creat-credibility
5 ]: V$ T" J% l4 W) Hreport n-values people [0.5]
3 a& H9 o) ?% x! N! F9 u; dend  d% Z5 H$ V! t+ \
6 @3 ?  q: b" {0 n. b/ K
to setup-plots3 z) h6 t: d  o# Y& Y9 B$ E' U
4 G" s6 e3 A; e: U  L" b8 y6 A, E' L2 w
set xmax 30
3 |9 [& E5 ~7 I$ Q3 g
) V; u* I. P6 T0 k+ a
set ymax 1.0
0 r" k0 W, W, L) n8 }$ ~% o

! l4 N. G1 Z! |2 Uclear-all-plots

3 a' k6 V* j4 e4 H, \, n  a% {3 p, J4 p4 h( y, a: E5 h
setup-plot1

. t/ o0 u: v9 A0 i3 \7 s) [$ O6 r- `
setup-plot2
( _7 Q7 n2 I' \6 g* r* {

. G; r0 B' v' w+ [6 S/ Msetup-plot3

4 T* I% w2 Y: u$ T& A) Rend
( B8 p( D3 R8 j8 L8 C4 k2 o* N; F! ]2 ?; o
;;run time procedures
, `/ [1 K9 m: o. ]) a( _" n/ t+ f6 C. g" R
to go
+ b* |- }$ B9 N5 v/ Z7 e
) P0 I: |% X& c) c) v: l# Wask turtles [do-business]

. x# {, D: H! s! Zend  T9 w+ B5 Y' u( }
9 E- k4 a8 r1 x3 \+ k6 C  ~0 e6 p
to do-business / T9 T4 l. l' q7 @+ q) d
7 Y* u3 a$ S: s

3 r/ ?3 F+ v* I" \, ort random 360
/ D; B4 g9 h9 _
: Z" Z3 w7 G- z' o2 `
fd 1
' B- k1 a5 ~/ {5 Q( L% ~9 Q) ~/ f

4 S9 [" R3 S$ h4 _ifelse(other turtles-here != nobody)[

5 b! }( D4 G( @; n3 }( z/ [
0 V$ F$ Z9 _- x) {' hset customer one-of other turtles-here

" C2 c/ X6 E0 A7 R  |+ s- T% f) y5 n* Y( x+ p7 o
;; set [customer] of customer myself
$ o7 Z/ h. a5 v

! d3 K7 ~# ]- \) Q: M- iset [trade-record-one] of self item (([who] of customer) - 1)
; o: s1 D# M+ e  b' l& A# _- B1 z[trade-record-all]of self$ ^3 o# c7 \1 t1 f  S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  D8 @7 }7 v* ~! Z# @! W  I
8 V  C: t/ b3 e9 [3 Wset [trade-record-one] of customer item (([who] of self) - 1)
+ s3 j! n: k5 W: [; K8 q$ w# f[trade-record-all]of customer
/ m0 Q* y3 i; w6 C! W
5 @3 T* V: S7 a' ~
set [trade-record-one-len] of self length [trade-record-one] of self
! g1 X+ p: |* z, w- ~/ R
* \* {- ~, D! d/ l
set trade-record-current( list (timer) (random money-upper-limit))
, e. H; P% z: k7 K4 h+ g

4 b, j  I. s; k+ O: S% L/ sask self [do-trust]
% A$ K8 ]. }# q9 e;;
先求ij的信任度
2 d& E. L5 K% m; h6 s0 l2 B2 }* B+ q* d* r8 G3 i3 Z
if ([trust-ok] of self)
( x; E* A- {1 P; g+ U1 S' {;;
根据ij的信任度来决定是否与j进行交易[1 J" B( T3 p: R: o9 q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 b" I% K! ]0 s
" Z6 L$ B& d9 T% e
[

  C3 t0 `8 ^* _, F; m
9 M7 q/ ~) K+ x3 c6 f5 wdo-trade
5 G% F" w! P( Y" W1 n2 R

% k  v% I* q2 Y) ^& K! D! Jupdate-credibility-ijl
, a5 m' p8 t; O% z
; f/ Q4 A7 M! h
update-credibility-list' G6 a: R1 p% v  d( P2 y3 Y6 i9 G1 h

1 ]5 ]. C5 ^& m8 E# a0 r* M$ \# J5 ]  @7 W8 M! B
update-global-reputation-list

, i# d1 e* l" |/ E7 ?2 j; x! |  S
7 g/ a7 o4 K; l: C3 [- Xpoll-class
4 N0 j; T1 j8 {; R1 u+ z, u

) g+ B, M# ]7 sget-color

# a6 |1 }6 h" m
1 c4 s% @4 i, R4 j: ~; V, t' D]]
1 l& X/ V: U$ `3 s9 M' U' T' }) X
4 [/ B* O6 @4 h6 I& @( C8 H/ [2 Z;;
如果所得的信任度满足条件,则进行交易. ~9 }+ ^- }/ L

! S& C' y2 x9 q# e* t" u[
1 _! \# L! D9 t$ ~5 x

) A6 W6 |  t! c- i% X8 s& ^rt random 360
: z# K) U0 C8 l) N5 a

( X7 ~! b8 F3 ?9 V7 V. E3 {fd 1

1 k, }# \; T( a! J/ c
, G' l$ ~- _9 j9 H0 A]

# O  V7 A' U% w0 Z. {/ h4 G7 k+ v7 a! B6 H
end

1 v# Q! }! g8 m
7 u7 d5 m, o, b1 f: D9 f! b* Wto do-trust 7 p( k4 k& Q8 i) P
set trust-ok False
4 @# A" m. ?8 ~+ ~: f% f' V3 U) o6 U1 g
% o& E. ^. s2 _5 C
let max-trade-times 0
- }5 D* |# }0 P0 G; H2 [  k/ Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 d) q* t( C. c* Rlet max-trade-money 01 u2 e/ F* U0 S( ~8 n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 F5 k0 v, Q. b
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 a* n7 R- L' a5 @6 Z) @# O+ h, x' O5 C* u/ P

! i9 W; [+ _6 ?- x6 vget-global-proportion
+ o2 Q7 ?3 S* u. A% plet trust-value  I6 B3 R- w, {, ~4 @3 T$ r
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)
! [2 ]. W$ b3 \
if(trust-value > trade-trust-value)4 ^+ j& K9 K* t  u3 N+ f8 s
[set trust-ok true]
/ `) a; L' y1 R( v! G3 F- _" Nend
6 Q$ z) f4 `  G$ s; O, b4 F' s& k0 w0 ?! N: K! x
to get-global-proportion) P- P- B* o. z7 b$ Q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 ^8 U( y/ D3 ?
[set global-proportion 0]7 S& |2 b' s1 d" u) {7 S
[let i 02 {  r5 R; W7 U: ?( ~
let sum-money 0
; T" w) J( d  ?0 }/ |/ Jwhile[ i < people]
5 ?$ I2 @4 V) a: P, ], g; Y8 ]; N. j[1 G; {7 x/ e1 `) P
if( length (item i! @9 Y0 j- _6 N- Z+ [5 e$ O3 j
[trade-record-all] of customer) > 3 )

+ q8 ]( p; u/ T( w; l( {[5 G$ B/ I- e. Z7 T$ V& |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ i0 G1 L" Q# |8 q]4 l* e; k# T" @" N
]
$ c: S% `  n3 k* C" i) Nlet j 0
+ ?) S; C$ N% E% U( z6 }let note 0
/ O! F3 |2 W8 q& K0 nwhile[ j < people]
$ ~) H+ M4 w  Q" K* l# C, L[8 A3 w. N# C3 Q+ j/ ]
if( length (item i% P1 b0 U4 g6 Z, z/ F3 ~0 o$ ~# v
[trade-record-all] of customer) > 3 )

0 P: G$ `6 G- y3 @* j- ~; i7 q, F[
1 Z5 H0 B+ j: A. D% K6 nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' ]9 N. F, S) ~* g6 C+ [. W3 J; @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 p- v3 {: c0 k! ]8 e% v' z9 C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" t. e+ s% \( U0 y- o
]
6 [! @2 L% R! t. k]
4 s0 J4 o' n8 ~& hset global-proportion note- K$ {, l3 I# q( T
]
1 \% z% J$ U! U) R. n1 }, eend% m8 @4 `- E4 \. o4 i: [( F

9 }# g9 F) a, Yto do-trade
* M8 R9 n) M% f6 C, D+ L1 J/ A;;
这个过程实际上是给双方作出评价的过程8 Q( c% ?5 T, q" T  {+ N# x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 ]4 o6 ^7 z2 E& a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ m" v& ]0 m7 e  n0 ?set trade-record-current lput(timer) trade-record-current9 X6 N) r# s4 D" x) v4 V3 [9 V
;;
评价时间
; ~: }4 j$ S$ A; \2 d! wask myself [
7 [1 O( F# g% w7 v6 Mupdate-local-reputation
$ o; b& o( r1 |2 wset trade-record-current lput([local-reputation] of myself) trade-record-current: |1 O- A4 T# n: b9 O5 K" H/ c
]
1 L1 j0 x8 L8 ~6 ^, xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! O- E3 T4 b0 k% |) t" }9 a/ u
;;
将此次交易的记录加入到trade-record-one
% u& _2 p0 R0 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& t  o: \0 Z% @  j& D5 T# n, S1 jlet note (item 2 trade-record-current )
0 s0 j  p  J0 @; I! gset trade-record-current/ W/ v( p- C! J: V9 b5 N7 m
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 m( I% r& M! t/ j* a& V5 Z
set trade-record-current
/ t$ m& @9 W* t, {(replace-item 3 trade-record-current note)
+ C8 O$ i0 T9 O( `' |$ r; v; }7 R: J2 a- {
) h. d/ F! ?, W3 c
ask customer [! U* s/ n4 e2 p% D7 i
update-local-reputation
3 M$ Y" t8 m& \4 P6 Bset trade-record-current
% f2 j( T" f* w8 p' G+ M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: C" k* F2 [* B! A]
) L  D4 V! Y) p5 W! r+ C. |/ H9 v' h! x

& S( V8 m8 S. }; O$ {% y) Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 V& e- B: B9 {6 L$ m+ y2 k9 b

( R! G; @' J0 h8 R% z( ]/ aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; R( A8 J1 X4 i4 b;;
将此次交易的记录加入到customertrade-record-all" w5 P0 P7 |+ f  R( R! l2 S0 _
end
: Q5 \2 M2 [, G* l3 B. c  }* `& x5 @
to update-local-reputation
% v: D0 C# \  Z: T0 u$ g9 {set [trade-record-one-len] of myself length [trade-record-one] of myself
" h6 e8 c+ y/ n, K8 Q+ y6 o2 e. L9 U1 x' F7 C
1 X& B4 S  p, X
;;if [trade-record-one-len] of myself > 3

3 G3 J4 c4 \6 m& ]: z& I( b+ |0 Gupdate-neighbor-total% p8 D+ E8 o7 H0 x- {+ I9 _3 Y
;;
更新邻居节点的数目,在此进行. r% R5 q, y( [1 F$ n0 J8 p" ?, c
let i 3
/ K9 x+ F' O# f! I$ U4 ~let sum-time 0
2 Z" H; J1 \& U# N3 g4 qwhile[i < [trade-record-one-len] of myself]* C/ o; c) ~, i: R! i4 P. v0 }2 {
[8 v. ^  M9 }+ H% r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 J8 K& T; ?4 Y7 I4 P( m1 j
set i
( ~  Z5 z3 _+ ^' p! o* E9 Y( i + 1)

- V% i2 n, t5 b" `5 |]
+ x7 x( v) \5 S' D& G2 rlet j 3
2 l: z4 s; w$ O7 m% Alet sum-money 0
; A) }  i9 ]- |, j# hwhile[j < [trade-record-one-len] of myself]
# j9 s* d0 P; H! U" D. i[
9 O; @6 H" M! C" Hset 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 I  O5 G8 b4 }& e$ o8 l* E2 d" K& Wset j
& E$ y$ F: f( H/ w0 }. k( j + 1)
; @* q2 F  F: e8 P. c* l
]0 d2 ?. ~$ w" P9 r+ v" r4 e1 D
let k 33 i! v2 ^2 b6 v2 x4 y. ~7 g
let power 0
, M; _9 W' N- M! E7 O0 l/ wlet local 0+ Q- u2 g) i1 V0 w& o
while [k <[trade-record-one-len] of myself]0 M2 Z* r7 m$ N3 e5 ?' n5 a6 t
[
! d9 i$ q7 D2 M5 hset 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)
; @, J3 t7 a5 k5 @set k (k + 1)
; {' A* ]7 G7 g( m]9 _6 S: T" a1 k5 R
set [local-reputation] of myself (local)& p" q- b/ }  h* H; k
end. Q4 E3 V9 _- \9 F% v1 c% _3 h
, C2 y3 R9 m: q6 a' J' a
to update-neighbor-total8 F. |/ ]9 k+ [- X; Z
* J* e0 x% u& X) e  h+ y3 e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) U! U  ]( w' ]9 K7 y  `( c" o
* V: o( O+ ^+ f3 x" W7 i1 Y
8 r) J2 ]9 R. X3 G' g  b0 H( _
end
: g8 Z& [' c  d0 ]  d9 G5 u5 n2 `. L% W# `: \  q0 Z
to update-credibility-ijl
3 G6 F6 e  H* |, ~$ ]' L. F: W+ u7 n; j1 o/ ?4 o
;;
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 V! ], Q( U: K1 I& g
let l 0* U! b* M" F/ S: {" u5 X
while[ l < people ]
/ M& t2 |1 W6 g, E- J+ F3 q; s, Q" g;;
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
/ t; S' X3 z8 n) {0 \[
3 R" U( A& F' D1 ^let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) Y  D* W4 r# K6 k9 ^
if (trade-record-one-j-l-len > 3)
; V+ D3 ]% c$ ^4 Q* F: ?7 _[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-one
4 E* ~9 C2 b. |% ulet i 32 x$ F9 ?: ?( M: U* |; B
let sum-time 0; a  i' s8 m* d- I
while[i < trade-record-one-len]
" T; E9 H- `  q5 i! I7 e[  ~* q7 c2 @1 j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ R6 u4 W, }& V, f2 Oset i" m* {4 ?9 x9 q. Q
( i + 1)
: ]2 w8 D  |8 a- r9 p
]! v  G' e/ U7 ]  _. u  U9 |
let credibility-i-j-l 0
/ I- J$ f/ _# p  i  V;;i
评价(jjl的评价), y7 u3 A: M6 u! L
let j 3
; `& O. C; u6 ?5 }7 I  Z' Olet k 4
+ }; D7 T* |2 o7 G+ Mwhile[j < trade-record-one-len]
7 A* `, r8 B! [& @5 l# c[/ y+ R, p" {$ t% b. K
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 ^$ V$ B, C9 E' P7 ~) iset 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)& R0 b* @3 }8 U6 @" Q2 @) j
set j
2 B6 g+ ^% u6 M, }7 _2 `( j + 1)
2 h" L$ p+ K' \6 c% o* J% P0 @( @- A
]5 ~* D6 m5 `5 a1 f& B' S3 q+ I
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 ))& h) I+ O' U" p
7 ]6 O% b$ w( p5 ~. Z6 S
) _, x8 [1 f' J2 j7 D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 O4 ~, E# a; F/ Z3 Q+ e3 [' A+ a
;;
及时更新il的评价质量的评价" \0 A( ^; V* C2 i9 [3 |' b* `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ }+ A* w" _/ Z8 I4 k5 P( Y% A
set l (l + 1)) t8 r8 v# }! ?
]6 u; c4 V! c; k( c- D2 k
end
8 a0 x6 ^% a1 H
' K# [* x5 ?* r, K) j, T! fto update-credibility-list
) h/ _& Y4 Y8 A# v, d5 t: Ilet i 00 _9 P3 K7 v/ r+ U/ I+ @
while[i < people]$ x7 M- S: q5 F0 b1 m% z$ P
[  w, e; d7 s' x0 ~
let j 0
# a" T+ F# C' y% ]let note 0" g# u' V+ O. I" C- X" z. |
let k 0
5 s  @  Z7 V( S% a% m: @' N;;
计作出过评价的邻居节点的数目
+ @% |4 }4 N& {0 O% hwhile[j < people]) H7 ?4 T. Z0 _/ {3 d% M  Y. O
[
% H" K  W* H5 M% zif (item j( [credibility] of turtle (i + 1)) != -1)8 i% f) H* s/ ?! [; F: O
;;
判断是否给本turtle的评价质量做出过评价的节点
4 j% W( {) z8 B1 s& a[set note (note + item j ([credibility]of turtle (i + 1)))
( r: g4 K  }& c! r, ?9 K5 G;;*(exp (-(people - 2)))/(people - 2))]

6 s6 J' o6 {1 G1 T2 j! }9 s7 mset k (k + 1)! M" L! d; r; K( W* _
]
* c5 _1 W6 w, |9 g' B! y- Aset j (j + 1)
/ L5 l9 T7 j. ?( I' o* S]
4 _2 q* T' k8 k- }. V9 B! R) ?set note (note *(exp (- (1 / k)))/ k)5 M& ]1 A5 B# g
set credibility-list (replace-item i credibility-list note)
* ^% [; |' P! t3 i  ?set i (i + 1)9 A. X& o. K1 P" v1 W" c9 t
]2 q4 l+ W9 s% N- C) L: g
end
% ^$ S! T9 k" J  E" N+ U# Y; e, i
# D( B3 X1 I# i% g+ f, \- ~to update-global-reputation-list, ^" W6 ~6 i# [
let j 0% }# `1 k, g7 R; H7 T4 Z& d4 N0 w
while[j < people]+ `' K, m3 Y' |, Q( Z7 L
[
7 J  J* Y; Z% L# U/ glet new 06 k- D+ G3 D7 k3 Y3 C; I' t; n$ L
;;
暂存新的一个全局声誉& B2 v! h# D2 B2 q: z2 Y
let i 0
) j1 V' b/ l/ {7 h( ^' Ilet sum-money 0
/ [& Z0 K) X% L* ]let credibility-money 0
5 F6 L3 A6 V+ {6 ?% Owhile [i < people]9 |9 c7 Y/ y& \
[
2 [, E2 G+ R! ^. F& x) tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ c% H9 r) z- tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ q) q5 k  {- y( e* D! b
set i (i + 1): W7 O2 l. t8 f2 J
]
- v9 p! K; q1 }0 Z% Slet k 0' P3 ^# e* p) a! ?0 I5 E  @
let new1 0- ~, L% B/ _2 K. |/ D' k" o! t
while [k < people]
; Z$ ]  E5 I( F  E( D[$ q% S0 u2 Q4 R; M8 V$ G+ 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)$ V* I9 l+ d, {2 K
set k (k + 1)
1 J( r, Z5 U: F6 i% T3 r! N]5 L& o& o6 l5 ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 @' n6 Y: Q, Q& T7 P
set global-reputation-list (replace-item j global-reputation-list new)
, n6 O+ T4 [' z7 ^, Z- g1 Y( _+ eset j (j + 1)0 Z. i- ^* L- Q: S6 Q# A- J7 q/ e
]
# }! V5 L+ @& b. Qend
- S' W2 W/ J3 p6 c1 |! e$ ^& b$ n; G# X+ D; R# f$ R
% h( n0 p8 u9 X% X/ ]6 U

0 R2 Q) I4 ]  W& ~to get-color, o: _8 R% c1 [3 }7 ]' p0 k

* c9 s# F% q6 x( W& W, E! B# Kset color blue

! J6 s1 M; k6 b- Q+ [9 q0 lend
7 L3 D# k+ r+ j; K" z$ m
, D( q0 Q2 W$ E: pto poll-class
( |& t; G; ?3 \$ q" d1 Mend
/ r$ Q6 C2 P' l. B
9 k! Y2 Y, F, ?to setup-plot1
: N, I9 k2 u; ^, d6 i
" E! w- ^6 H  p, g( p% A( x, |5 fset-current-plot "Trends-of-Local-reputation"
& N  D  X8 i5 o7 a/ j' s( ]- K
; @$ X+ V/ e+ {+ J
set-plot-x-range 0 xmax

) l3 ^- A8 {9 V2 G! F9 E0 U/ d' H! ]) z
set-plot-y-range 0.0 ymax
6 Q& A/ b+ g2 f8 X
end6 Q" F/ ?% h7 ^
% m! k3 V! |. @  {: {  |: ~+ T
to setup-plot2% ?; v! w: P7 d

. t7 o. E8 R5 e& Q3 l. c6 Bset-current-plot "Trends-of-global-reputation"

& n. ?# S6 ?( v; K" N' i  d( ^% Y3 H6 b/ ?9 w! L& x; }7 O
set-plot-x-range 0 xmax
+ d* _& Y$ b5 O& Y) l5 C9 t

' T$ S  J) o6 f" i. ^, w* B$ x1 F9 r6 @set-plot-y-range 0.0 ymax

* c; E1 U- Y$ Q# x4 T( H* Pend5 l. p4 X5 C  Q7 L. C

% }( A5 H* `6 \! [$ G. ?to setup-plot3& c: ^6 _" s. i/ N6 r% M6 S. T
+ j9 J; S* ?- ]6 [+ c
set-current-plot "Trends-of-credibility"
! A" G6 G% i# ]. z

' a! B1 S; O$ v4 b0 |% sset-plot-x-range 0 xmax

) q$ N2 P* Z& L% r1 A* D* n) W7 `) ?( w. J9 l
set-plot-y-range 0.0 ymax

4 d+ G  s. ]5 {4 _. hend  E8 l& K  }& l8 D* {9 c
; y2 l5 u8 N6 \1 O2 l9 X+ y& J3 H
to do-plots  H5 Z' |3 I* D2 Z
set-current-plot "Trends-of-Local-reputation"& B/ T) l" E; y" A3 b( Y* {& R
set-current-plot-pen "Honest service"1 A4 f) x4 A% V# E2 i3 ]
end
( I: p6 E' O1 o+ H3 m1 @* E9 n( H  n4 k: s: f& ?3 X& F7 V+ Z
[ 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.# r  N) ~8 i2 A' m! ~
5 a) ]5 `' H/ r9 b5 z" 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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