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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 h3 W6 U$ M. |
to do-business
, q6 x9 f' \: l/ {$ L rt random 360
& i  R" ?2 a: v/ S/ v- T3 Z6 h fd 17 J# o5 {# O% g# P
ifelse(other turtles-here != nobody)[; _1 K0 y: g1 p1 c0 P, h6 b
   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./ g$ C; l( y6 s0 ]% p( W
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 c7 l  V& v+ a0 a6 _( M5 |4 H
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 H6 J6 a* l, d& @! Q, D
   set [trade-record-one-len] of self length [trade-record-one] of self, U( q- ~; ]9 K# I, \0 g4 b+ Y
   set trade-record-current( list (timer) (random money-upper-limit))0 O1 B' ]( g& s7 {! C

5 b4 Z  n' [5 k& N. g3 Q问题的提示如下:
- X& g' k8 M+ T3 F* F$ X0 M4 i9 M
error while turtle 50 running OF in procedure DO-BUSINESS
$ ^# ~( u0 ]/ m) S% P8 }# J' x4 R% [  called by procedure GO
* [0 Y* M' O5 @( N) @7 _OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, Q7 w: r) [8 |4 ^4 }8 A" f* K3 r
(halted running of go). {: Z! m) O7 q0 V# ]! l

9 E0 b4 C4 r- K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~~2 a* F9 j& q% q0 R1 ^; \' U1 G! ^
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 f9 g6 `! c4 E# p; s
globals[: m% C4 E" [* ~5 [1 Q
xmax# M8 X2 H- s- c
ymax& h5 |. I- G* L" G
global-reputation-list
; p2 G: r4 q0 @. O" I( r3 I' a  ~/ O& {/ y
;;
每一个turtle的全局声誉都存在此LIST
& `6 _3 ?& R" X. [0 l/ }" y3 lcredibility-list1 l% g4 R/ U& c% ^& u
;;
每一个turtle的评价可信度  |! J4 k0 ~# g) g# F5 s# V
honest-service
5 {+ R& Q0 m* p7 Q0 D: J8 Tunhonest-service
" b- y9 Y0 T9 B" z9 Hoscillation6 }3 M/ c) J2 E. c
rand-dynamic
+ S2 {+ {" h' G2 Q]8 X$ n& E% h3 z8 u
  J/ y( ?2 B$ }6 D
turtles-own[
3 }  B0 u8 @/ f6 P, M9 C0 xtrade-record-all2 @% V8 M1 h! `: F' M% u" p
;;a list of lists,
trade-record-one组成" F" A+ q" K; x) |7 O* \( ?# h+ Y
trade-record-one
$ G6 t* e8 E& _0 k;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ z5 }% L8 ]0 M6 {9 p. s5 Z1 b3 l6 l$ l- y, T
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]1 f3 T2 B: p* n6 c
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
% w8 @3 _9 d6 w0 pcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
7 ~3 S  e5 P$ ^* P3 l% hneighbor-total# U3 k* Q( o# U, A* L( Y
;;
记录该turtle的邻居节点的数目5 f! Z9 z. C* V3 K7 W
trade-time, F" P2 d: q+ T1 b7 g( l1 }
;;
当前发生交易的turtle的交易时间
8 \) s* l  G' r/ c5 ]7 b0 gappraise-give6 T, }' I1 \2 ^1 |# ^$ s
;;
当前发生交易时给出的评价
( I6 X: P# O  k3 z6 [6 n: Rappraise-receive: J! @2 F9 g+ T3 P" |: k& k
;;
当前发生交易时收到的评价4 n: v6 T' z! {
appraise-time7 ^6 @1 _5 C; V
;;
当前发生交易时的评价时间' P' l" {, h. e! {) M6 G. S, P5 B- Z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 w$ u8 w3 A) J
trade-times-total- W- S+ }" i0 a3 J
;;
与当前turtle的交易总次数. B, N# [' i% l9 q* m# V
trade-money-total! R5 J/ W" |: U/ k0 _  v+ O- f
;;
与当前turtle的交易总金额. N6 R" d3 @, L- h! Z' R
local-reputation
; Y$ Z3 @+ b, }! Hglobal-reputation$ t1 a/ z  c6 u2 s4 s$ `1 u8 j
credibility  Y, m* r) f2 }! Q# K
;;
评价可信度,每次交易后都需要更新' @5 H8 {$ M4 A8 S( F2 c0 |
credibility-all6 ~5 H0 d! Z( ~! ]9 T, D) C" B
;;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1 n" q0 v) F: ?& }4 r
7 h7 d: p6 P- X) f  ?+ F0 R
;;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+ P* t7 \1 r3 ~- J* ^5 e; N- C3 \
credibility-one8 p( v& b5 f! m! ~5 v5 g
;;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
4 x, ^+ m: R( P3 t6 a' v1 ?# [global-proportion
8 G: F9 l0 L, f0 W5 T+ j: @) p1 z& |customer  k1 S4 Y- W2 z/ G: U+ Y0 i1 b, Q6 N- x5 @
customer-no
% _$ h- N! c- t0 v. T9 ltrust-ok
6 W! _# i' M7 t+ x0 m$ e% S1 a+ A0 Etrade-record-one-len;;trade-record-one的长度( h  `- M5 Y2 h
]7 F% S2 E& Z9 f3 R

9 g# p7 p/ i* ^/ E' T" X;;setup procedure4 B% l  S- h. {. w& x( W

$ c/ x7 G# ~: q; @to setup4 H* e  [* L. e. b7 l

) ~3 _" w- I) k2 C3 U) aca
5 W" b: V8 [! @2 _
- A) |: I6 M2 o' q7 ?' G
initialize-settings

2 ]4 T& q7 A9 N: ^8 s8 b6 ]) {$ u! D0 {, Z2 f, \
crt people [setup-turtles]

- C, c+ N; H2 A  _7 H) x+ ?
) z5 h) l* y0 X& S8 s" Nreset-timer
7 F2 i( i8 V* X4 Y7 a
4 J+ {% ]& e  J* K6 P
poll-class

7 {8 W' Q. ?' E1 u/ m1 m% i, A+ A, P: Y
setup-plots

1 Q% Y6 d# K/ |2 O  A8 [% b; [; T0 z" ~
do-plots

2 s% g+ P! R! Qend* u- s. D& u0 e0 T

) Q) H, n8 P; Y" U$ ?to initialize-settings1 |, T& ?! E9 d% z- i, S( X( s
- L3 V) G0 k6 P! W
set global-reputation-list []
8 p9 x  V1 T4 a5 i

" D4 i/ w, k; |7 ~( uset credibility-list n-values people [0.5]
* b  l3 m0 d8 q# C
# N. U# Z5 ^* \9 P8 C, \; u
set honest-service 0
. a3 p, l  B9 r# B; r
0 i- h8 S+ V/ L$ m+ E, ]: Z: o  A
set unhonest-service 0

! T- n; b7 T5 M* g
" W5 R6 B- F; {1 F& w1 {1 @8 rset oscillation 0

) i. e2 r+ R( k
  S2 T8 u& `: v4 k! G* dset rand-dynamic 0
$ o, j9 L* J  L; m1 Z5 y* i
end7 x" e  ]* w* k# R2 [* O/ r
& T/ P: Q" b9 @$ D2 E
to setup-turtles
' v. b; Q& j+ s9 P# Aset shape "person"
% r6 I; z. B! J& l3 ?8 dsetxy random-xcor random-ycor
8 K/ R7 n7 e* A( q2 Pset trade-record-one []
% l! G4 T6 g2 w" f* r, q
! _* B, L# ]) j
set trade-record-all n-values people [(list (? + 1) 0 0)]
  v* A; T0 ?3 M- Y$ ~# p5 y) G

2 q" u5 G0 a; j, U: }( L+ bset trade-record-current []5 e4 B7 V% k+ m0 c8 b
set credibility-receive []
/ b) Z+ W+ m9 i$ r% e, ]9 u4 {set local-reputation 0.5
2 V, r' q! H- F) aset neighbor-total 0( S9 ]. ]( [# d: W+ m+ `
set trade-times-total 0
" Q$ R1 o1 F  A9 aset trade-money-total 0- Q1 G: x- I/ P, u, ~' B8 ], p5 t2 T
set customer nobody
8 H1 u; h) J: kset credibility-all n-values people [creat-credibility]
- {: E. `5 P8 Z) Y4 V  vset credibility n-values people [-1]4 W/ E) P& K7 {7 V' q7 p, G6 D% h( _
get-color
" r$ O7 D  x* n1 O
: U! a; r2 N+ ^4 d4 `" S
end1 i2 c" ~. V/ _2 N9 U. |' ]4 [
- M8 t# S! E( N
to-report creat-credibility
2 e2 v- ^) X" z, \. O2 p. Greport n-values people [0.5]1 @& e+ k: K# N; k* k
end+ L# D5 s, ^& F; @% f

' L" {3 c; ?0 F+ j  Z) a& n' t7 `to setup-plots
9 Q, B& Z  {/ f$ N. o  K$ A  ]$ W& o# {4 S' [2 V
set xmax 30

, N  ]# w& J. Q; V4 N/ u) @! n+ I3 J
) u* M7 x* T$ ~, A' Lset ymax 1.0

% B0 l/ J! L  T& ]0 k% ?2 |* o# c, t* L
clear-all-plots

& V# g4 }# k  [# B# Z! A
2 K5 |& N4 G$ N( W1 b2 u- `' Msetup-plot1
- k% Z, s* [2 p* y7 k% J3 M

7 S. Q% w* {. @/ F7 Vsetup-plot2
: F, ^8 L9 R  `0 m0 J

. Z; Q. B- w9 s8 bsetup-plot3
1 m& [: V. o1 U) k; G: \1 q( w2 K
end
4 v( c( X: W" x) P( J9 b2 S) ?) I" c3 C0 ?
;;run time procedures7 o2 L5 u/ x& I$ x7 w
# S; y, B! h; T
to go7 _2 v1 z2 o! j- D8 y/ R
% J; o& H4 ^# Y& J
ask turtles [do-business]

* v* {" l- F) a7 [, uend
+ R* n- Q5 f. ]- `" m. w' `  L( H6 o7 f
to do-business 4 I. l! D& W, g2 \; |9 T  ]% C

4 r8 A, F, S9 g" w' Y
% \: A2 G( u3 Grt random 360

  r3 M) G7 u8 z; n9 s# u5 R; i+ X" Z  G! g1 n2 f3 s0 I3 K# n* I
fd 1

5 W3 u6 T* {) b# i7 B, k% i! Y' F4 X- \, c) ]
ifelse(other turtles-here != nobody)[
" S8 U3 t' `! i8 D- }& D$ i

" h2 N9 K4 M' rset customer one-of other turtles-here

8 M, D/ C" }" B+ l' {" j5 q( }8 O6 g5 g+ n" k$ |
;; set [customer] of customer myself
+ o1 l2 r, R; ^2 {

5 |* R. o. Y" qset [trade-record-one] of self item (([who] of customer) - 1)
& X/ [0 k9 V1 w8 P/ y[trade-record-all]of self
* A( k) D/ N4 S) V;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! n- D) g2 g9 ?/ S/ I9 U! x
# L' I  E* [# \7 |7 _6 F
set [trade-record-one] of customer item (([who] of self) - 1)
: \% Y  \- ^* J  w6 {[trade-record-all]of customer
: J& @) t' F$ f9 |, M* }
! I  j+ d. H- U4 }$ |
set [trade-record-one-len] of self length [trade-record-one] of self

5 D3 @7 {& M3 Y+ t* P' _
0 k$ \& X- i2 |set trade-record-current( list (timer) (random money-upper-limit))
  U: Y$ E/ _3 n" K3 c% b( @+ g: O2 `3 C
3 v7 N( H# j# o- N. c
ask self [do-trust]
1 q; A. Q: v4 t0 `+ g2 J- k" Y;;
先求ij的信任度
; e1 g3 T( s0 a9 j
7 w' J: b+ K3 W: q4 G  ]2 ?3 u# g7 }if ([trust-ok] of self)% E! a- K, d) L/ s$ Y
;;
根据ij的信任度来决定是否与j进行交易[2 e0 X5 \: ?+ q( X6 f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& s) E$ E# t  b3 I# b
4 r$ m# ~# U9 Z
[
! Q; i' h8 _  R3 G
9 \* M: w- |$ G
do-trade

& Y- [, X8 f, ?# _% L. H: J' g+ E1 q3 h& k: ^5 |3 m% q/ C% K& z
update-credibility-ijl
: [: ?2 F1 p* p  K& b0 R( d4 b, E

7 s- ~8 L7 P+ F( tupdate-credibility-list, Z$ s& t' _5 V/ D# {' g# h

( D1 p, r; y* G# u, ]$ ~5 }& q/ h2 _/ b6 g3 O, `, _# m7 C9 \
update-global-reputation-list

) Y! C9 u9 Y9 j# `: Z" A+ X
2 t, D$ e: n3 \7 ?2 Epoll-class

& s+ U) x1 h/ Q; L
- H2 d! G* @/ O5 n6 R: w7 ?get-color
, E& z3 y1 p7 Q

' x$ g, O) u1 b1 B$ G  B9 z7 N]]9 P- ?6 p; H% V% P! K0 U

+ \& g# @  C- ?' b4 X& `;;
如果所得的信任度满足条件,则进行交易
" ?4 ?( d. E0 Z4 W8 h3 _- D
1 L/ I5 d3 n8 Q' F) z, Y[
; c) o% F1 G* Y' C0 N" w' H

% L) Z0 K4 R" h; J0 W+ F# Y  Irt random 360
. C# y1 E& }7 R* x( w# S
- L( U9 ?4 G/ {
fd 1
; r  Y% D# K4 D7 L' q
4 U9 ]- P7 O, U, c1 T
]

# u9 W- [0 m$ i. W# h; [
5 k$ n* Q# j7 s7 ~5 Kend

+ \3 S8 ^: C+ h' ?
# b4 M% ]+ F; n" }% uto do-trust
2 _& B: l" ~- R0 S% |: Vset trust-ok False. o6 A0 b5 H8 i" ]4 f' q( s$ ^

  O$ Y2 v8 Q- l$ ?+ i  }' h) ~4 H

! u" i- M) i& _: `6 f+ T% j: Ulet max-trade-times 04 N$ |  y. R1 e5 D7 c# g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 V+ q& N5 c" M2 h/ c5 t+ R) H
let max-trade-money 0
* H4 _4 e5 I* r; Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: d- w. I( y4 B9 C9 D0 Q' K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ C3 n) y1 u' q2 d- W5 u0 R& Z5 ~4 I. x- w! ~

. X' K, q& a4 |' n/ ^9 cget-global-proportion
8 @4 J9 l# |/ H' N  P. Z9 K& B) J2 n2 Alet trust-value) g" q( d: P: ^% T" v
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)

9 G9 y% x- n* Y" s6 {if(trust-value > trade-trust-value)
5 |# J- D1 r$ p; ~, u: f! p[set trust-ok true]8 t& t# a! S3 v7 r: O/ \) I- D. Q
end
& \! f) T) |6 H* i5 r* Y8 F0 t0 w5 ~' |* h( h' @. S
to get-global-proportion
0 g4 s/ o' O4 D# O; H8 U9 k+ Q- ~8 j! sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" o# A. }9 E; W/ \[set global-proportion 0]
' A! a2 O; b% b3 ?+ `0 ^* Y$ ?[let i 0
9 A4 ~5 e# s1 [0 W+ Ilet sum-money 0- `8 K* u( q, e+ r5 F( ?. _
while[ i < people]
/ w3 f' i; W: X) g+ h/ A! R# u[7 s5 s/ S8 P* j# m& W. C$ g
if( length (item i/ X. B% }; E- T- ?- O- k4 G
[trade-record-all] of customer) > 3 )
$ m. P3 s5 R) b0 c
[
: }& x! T# }& V. V8 @set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). B4 y) t: V3 e* m5 {% n. C( c/ P0 l
]
/ U: z' f: I- B% Y+ y]9 p2 K; }$ Z7 W) X8 X/ F- L8 f/ ^
let j 0
- G* L9 q7 h- C$ m6 klet note 0
- {+ v7 r) p/ M- ^while[ j < people]  w7 k9 ^, O1 g8 @+ Q" {" @, y
[& U6 i4 W+ r9 W8 z/ M0 v% Q4 Y
if( length (item i
5 _, s, f6 b  \: g5 T' \( e/ K, g[trade-record-all] of customer) > 3 )

  X6 r/ `9 O/ q0 H) P" u& i[( Y; E' f5 B0 k3 ^' t& S- l6 i
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& c+ L6 }; y( {- i7 l8 u5 i" g[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  a$ n( F. Q- M: G) b: ~* }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) B1 i0 }0 O/ p: X9 \* e8 X
]  l5 A& q# @* c1 h+ F9 n9 D
]  J/ ^! K  C$ }$ P- E
set global-proportion note4 I8 r/ i1 C# Y9 M) u
]
" D4 E7 M& |3 E; x8 m3 Uend5 N1 x3 X5 v0 i: {" @$ m2 W! K
$ f3 K+ `! i4 {# c0 n8 z+ m9 m% N4 \
to do-trade! K5 U7 F* p' M) o' F* m% P0 B
;;
这个过程实际上是给双方作出评价的过程& C$ j5 N% S1 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  L, r# v0 X& L/ {( G; vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' m2 ]& T& L# Q& [
set trade-record-current lput(timer) trade-record-current: R. U! y% X# M: B% {
;;
评价时间
/ x  C: t  y" a7 X5 y! b( O$ l+ nask myself [1 [9 C; I) p6 ^
update-local-reputation
7 L. ~# }8 }) kset trade-record-current lput([local-reputation] of myself) trade-record-current
, m+ d+ U4 E$ R* ?$ s]
# }1 y, Z" e( Hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 C' O2 n) X+ g$ f. D;;
将此次交易的记录加入到trade-record-one
& b* x& V+ y7 L8 @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 G+ f# n; A: _& X# a
let note (item 2 trade-record-current )
& r8 m* r1 u( {9 q, ^9 e* l0 ~set trade-record-current0 {. i) d: J& ^. B, E3 z$ m
(replace-item 2 trade-record-current (item 3 trade-record-current))
  o/ E6 G' T) B: q9 g2 B
set trade-record-current6 B5 \. o0 \' r3 Q; p
(replace-item 3 trade-record-current note)  q: u2 h, s7 y1 B
5 B7 q2 @7 A+ E
5 c" y0 q' k- \% G! {1 A" Z4 F
ask customer [
1 v0 x! l- F2 d2 A" r3 Bupdate-local-reputation
7 F+ C( }, b) m: G& nset trade-record-current7 i+ r7 d1 O* }, @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 y- I6 D" T+ L# x  f]& p# o1 P' P4 v" U. R3 ^

1 F$ z  ^; s4 E. O+ H2 z% ^# [% t

, p* q0 u3 F+ O( Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ }5 X6 h) w5 O$ L0 \& x1 H9 N! F

- d( b* f! G# W' gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 j5 Z, V. B- ]- U+ ?/ o& W;;
将此次交易的记录加入到customertrade-record-all
) j8 }" I- S/ x( w$ B7 Iend% g  V: E* I2 @- d4 _* y  k! r7 ~
/ f, L, r  n. K# }
to update-local-reputation
; r6 z8 V  O5 m; Hset [trade-record-one-len] of myself length [trade-record-one] of myself) g9 O% X6 h- G  }& u

1 D# M3 W6 R# u+ q$ p& E! D
1 L2 a# q; ]# E6 B5 j8 k+ ];;if [trade-record-one-len] of myself > 3
! }& k# s: x; ]. X7 {7 U
update-neighbor-total! k# a9 `, }6 I- X+ p
;;
更新邻居节点的数目,在此进行
1 r  V. S6 W" Q+ h- ]& o1 Nlet i 3
2 K  r1 A5 ^8 V' Plet sum-time 0* t' R3 d1 a( B" i8 D/ r) m1 ^
while[i < [trade-record-one-len] of myself]% Z* R( H9 a  G5 N/ h/ j& x8 V0 N
[
$ a2 p/ s1 I2 n2 h% Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% E+ a7 d7 M/ X# ?+ ?& Tset i3 x9 K1 n2 o6 h8 S( N
( i + 1)
3 Z7 w! F" b6 c2 S% q
]7 u; Y0 F) ]$ A2 w- m; \
let j 3
4 }9 L' h$ r! ~$ @( `" F! tlet sum-money 0
: E  v5 D' [$ _0 O% ~0 xwhile[j < [trade-record-one-len] of myself]$ A4 Q$ z* _2 {+ [1 d0 B
[
7 V5 j: t! J) v9 v2 f) V5 vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( b  `) u) R# ^- Hset j1 e2 Q6 g6 v) I% C+ B- u  l' c
( j + 1)
3 x& A. s% R8 w$ Z& j( b
]
5 m: {3 R' q( b3 F, rlet k 34 c6 F& s) D! x! y+ U
let power 05 J# \: Y3 r# C7 z9 n
let local 01 Q! s& D3 z" g' e
while [k <[trade-record-one-len] of myself]; w; @1 y- p) k4 w) Q+ P
[( p! |9 o3 L( G+ F0 |
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) 9 D7 e0 y  u  Z" Z; S- n4 U
set k (k + 1)
6 z- F- Y6 z: Z$ f; M4 Z6 ^]
* d! D$ `$ X% O6 a, [0 M0 kset [local-reputation] of myself (local)+ v& d- ^) Y8 r5 _" |) I
end9 y: m6 H- G1 L$ ]
9 E4 F2 `$ {! h& M+ \
to update-neighbor-total
2 k! C' Y% X: E$ i( K; n/ M! |4 V2 f* r8 u# l! F1 [
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 z5 H/ a1 \, t, W) Y

/ H4 n- P! J* G6 z
( |# ?- p* m4 s" U
end
& r$ v/ n1 e4 V5 T
2 ?) H4 K0 `# ~5 K+ {to update-credibility-ijl
. u5 ~( i; @: w5 e2 A. C$ j0 ]8 ?- r% a- E' W6 e8 b
;;
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。
* e+ u; ]" x6 x: Y+ ]! k8 j3 ylet l 0% F: p6 s: \" c6 X. L5 U
while[ l < people ]& f+ I! k, P6 Q$ h* w. h' M" V
;;
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
* S0 u6 }$ k& [4 \2 [[
" H5 h3 r+ W8 a( U/ Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ o/ J. p6 b. f) V0 h
if (trade-record-one-j-l-len > 3)
( G% r2 z5 S3 s) T8 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-one& p6 b/ W) b. \1 {) z4 Q9 b
let i 3* u1 J+ O9 E5 J. z7 {! E
let sum-time 0
& e! w  q* g8 V+ q0 P5 K1 @while[i < trade-record-one-len]
+ d+ T8 y6 q+ @$ J4 d( b[
5 E# ~3 U& t1 tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). @/ O/ Z/ b4 q7 ^9 K7 ~
set i& B; S8 d, }) m! e! }8 }
( i + 1)
2 @) G/ w+ q0 H" A
]4 ~3 }3 k0 j+ S
let credibility-i-j-l 0' G* ]5 W0 }$ ~* N  @2 u
;;i
评价(jjl的评价)
& c* \: p" R) k1 M; t) N$ Mlet j 3. ~- F/ e; o% ?% l
let k 4- W/ R! Z9 T5 K3 L
while[j < trade-record-one-len]7 p) s& U3 o; e; b- N9 U% c
[. ?; ~# g3 P, s2 b7 l
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
0 V3 N+ a( l) m: U2 @* |$ _4 tset 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)" A" }  l3 ~  F; B9 P& O0 ]
set j
! S! E, F) ]! h2 c! }% |0 }( j + 1)
/ N  s+ t! ~! i$ m) Y  z$ O- g
]; B. h  x( b% D9 {# ^% ~
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 ))
+ U, t# ^2 E, m" z" a2 |
; e; P* g2 W; i  B4 u
% q$ Z: O, g; f1 Q; o( a( p" V: h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 o7 w- ~# i" m5 r: a; d;;
及时更新il的评价质量的评价
9 C1 \% z: ]8 ~9 h* r3 Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  l1 }& Q; S% ?  h+ nset l (l + 1)
$ ~4 }3 f& V* |; f  g* k]% C$ i5 x9 p+ f; a2 G8 c
end! `% j! `' ?7 L1 R- Y

7 @3 B* v0 i6 x5 g; S( O1 J9 cto update-credibility-list
# }. x* [$ o  u* J* _let i 0, V' b; y& b; R, g
while[i < people]
& t" C/ o4 ]; j% i$ U5 i[
. w: s+ e) o5 R6 T1 i8 o, p8 ]let j 0
' F: ~- u: B2 G, q. D  ?let note 0
4 `  l( f- d8 ]3 o2 t: u  u: Clet k 0
! m. p$ p  J1 `5 h;;
计作出过评价的邻居节点的数目4 Z& u1 P! }$ R5 R, c+ h* K2 l
while[j < people]
2 O6 E$ ]+ H% T4 k/ ~8 x# I[
$ E" F  w0 @* w; H* r" e% Oif (item j( [credibility] of turtle (i + 1)) != -1)
3 j5 n$ x& V5 C' b0 |; `1 W% };;
判断是否给本turtle的评价质量做出过评价的节点3 C% u8 f7 P: u
[set note (note + item j ([credibility]of turtle (i + 1)))
* J0 ~5 j  _% d. u;;*(exp (-(people - 2)))/(people - 2))]
, n; @6 p  K( G0 [+ m5 \. R8 T
set k (k + 1)  h7 @% h- P& U4 y6 ]
]
2 J( B4 X5 X. Vset j (j + 1)$ w; v# m0 r4 L7 O: n; c) ]
]' U# ?, n8 e  x1 }6 I
set note (note *(exp (- (1 / k)))/ k)7 N! X# `( t  g; d, y1 C
set credibility-list (replace-item i credibility-list note)) G) G" B  O4 V+ @1 \
set i (i + 1)% @2 l- I- }6 C, Y& d5 T8 P
]  J1 R# x* H6 Z1 ^
end; K; C6 p; ^) c/ U
! a$ m; O! b: |2 ?* y0 x
to update-global-reputation-list& c3 q- N* z9 u" x" N
let j 0! Q+ c7 C) S8 {- O- \5 [1 P0 k' e
while[j < people]
9 w# R* }8 R5 D3 u$ V4 u' y[
& g" H2 N# q. W9 R7 v( Wlet new 0$ z' b3 m/ N3 b  y
;;
暂存新的一个全局声誉
9 P' q" z. p  g5 E. F$ Flet i 0
3 q) e( P+ i6 r! v) @: j( plet sum-money 0
5 c/ a8 e% C# C( u0 F5 A' r7 ^/ G- A% l$ Ylet credibility-money 0
$ K8 ~0 e0 z( h- z% c/ ~  W, l9 Cwhile [i < people]
) S- G; ?" P1 Q# S/ c, I/ d2 n+ T[
3 V( D$ `1 V  U4 aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* ?* Q' T  |  U7 R" [* D
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 y  V: u+ S. B2 f: w
set i (i + 1)
( H- R' Z. |( S: d0 p7 m1 t0 ]( T1 \, x]
. W$ p1 |: r7 o+ f8 H  ilet k 0, F0 _) w. S% d2 z, D/ k
let new1 0
0 }- H6 ^6 S. V$ K6 s& Jwhile [k < people]5 \) h7 J/ u- b' l
[
% k6 u$ z; P, y% iset 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)
! ?- P) J0 \+ v, Tset k (k + 1)
) R' l2 Q9 y) H]
" [8 W! W# k. J! hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% N4 X* a; e7 ^; f+ Hset global-reputation-list (replace-item j global-reputation-list new)
0 Q7 l3 t# ^/ l" zset j (j + 1)
; j% m) W/ D  ?% P9 b]3 J0 K& d% h9 F# S/ Y1 N$ U5 |
end$ z, W9 A. p  V5 J% `
! p9 [6 o+ X3 d$ O! [
8 q+ E6 J* J: V- a* C) E$ U
/ M0 Y* ?" O- N& o/ ]
to get-color9 ^/ |  F8 `! j
" |! F2 D2 w- j" ^* b9 O+ f2 f( @
set color blue

7 e8 q& c8 e( E5 q8 tend% z8 P! h# W, G1 T6 q
  F3 o/ I4 F  I9 l9 j) e' S* a
to poll-class
& o1 M, g0 A, send
; e7 j8 `& n" P- |; Y( \
4 g& k$ J' P2 _to setup-plot1$ f' q- Z8 p  @, Q& P1 H

% `( P8 o( N. g1 @9 ?3 [+ pset-current-plot "Trends-of-Local-reputation"
2 G- J/ z+ k* J- |' D
* ?. a! Y6 Y: M* t( g, I
set-plot-x-range 0 xmax
: B! a( c$ U4 d2 ]% i
+ m. f; ]/ v2 U- u' E: ^; ~2 w# T# _
set-plot-y-range 0.0 ymax
1 [" M6 y. X3 ]) N6 N7 O
end
" p) Z9 Z4 a6 S8 T- n
/ c1 H5 C" ?7 O5 G7 h% @5 Yto setup-plot21 m1 Y) v  B. |( z0 H( {

8 i7 W( `" h8 i+ J% z1 g/ g' N/ A$ `set-current-plot "Trends-of-global-reputation"

+ K. C9 i* l5 I5 g1 F3 N- f
5 X, j8 O# Y2 O  `7 x7 n. M; o$ ?set-plot-x-range 0 xmax
) w% @( T( E2 p  a2 L. @; e8 ]

8 O; N, I& R: j  s: v0 @, U  dset-plot-y-range 0.0 ymax
( X( |+ `; ~+ h8 ?4 E6 F' S/ K
end! o) G' L1 l2 e7 j. ?$ C  v

8 z0 W" T' m& r6 |* b2 C! D! t) c+ xto setup-plot3
! U& Q1 q$ r/ t8 l4 F3 ^1 L
& }! g. R( Q" I+ H% wset-current-plot "Trends-of-credibility"
/ z7 g$ e# B/ {1 d& Q  \

9 r5 {1 l2 R3 F! @& qset-plot-x-range 0 xmax

3 N) h. F7 [1 l9 u6 O0 f4 ]8 a5 H2 l2 x$ O5 B. |* V4 b1 y5 y
set-plot-y-range 0.0 ymax
* M& R4 f+ X: s1 E. I9 L
end: i  \, {+ \2 J( D) o( b
9 r9 G7 h- U! f
to do-plots3 J0 n& L7 t" c- a% B
set-current-plot "Trends-of-Local-reputation"
% F, b1 T. I; D) H$ {5 H4 mset-current-plot-pen "Honest service"
% M9 n' h6 y! M( V8 q- ^; g, ]end
! P: Q* x. w& d- l+ y& v) b! r7 I& k/ C9 U& O1 j" c' H6 C% J2 a- ^  T
[ 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.
+ |  C& u' M# U: M- Q4 n6 ~
) Z# S; s  X5 R/ _3 f0 v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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