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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:- z0 T& [) h- F9 X" I
to do-business ! X8 ?) W9 f. r4 h) _: p
rt random 360
9 L+ X3 K/ ?1 ]7 c4 e fd 1, P5 m1 x$ Z% W  ?8 U; {
ifelse(other turtles-here != nobody)[" p" k1 [2 f% m' y# V6 W: D( A
   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.
) Y  r8 E( M2 @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - o8 _+ Q) @/ F& ~2 E6 S5 d/ L
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& a2 _* o: p! u. v
   set [trade-record-one-len] of self length [trade-record-one] of self8 i/ g* U3 i3 z. c6 ?, F  d1 S
   set trade-record-current( list (timer) (random money-upper-limit))* w) W& X8 c& |) p( i4 D5 A
/ E% h" r/ m* f0 P; L; M' Z9 ^
问题的提示如下:- a0 u6 ?2 y# l; k; m! i# [6 f$ Y
9 F1 W# h3 }0 O+ X/ X
error while turtle 50 running OF in procedure DO-BUSINESS& ]9 O8 i4 @$ |% L
  called by procedure GO/ d/ E- S0 ~% `  t# g6 ^/ C
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 V' m8 P/ p. Z6 F; y! R3 T4 j
(halted running of go)
! H6 m  w/ Z' w" E( O7 m" ?$ _* u5 ]9 a( x3 d) K4 m
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~~
# _4 z- e2 ?1 [4 t) F1 Q# u另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
" ^2 m+ M& A8 b$ cglobals[; B  I* l( n+ g$ X3 c  z" F! u$ {0 Z( o
xmax1 D% I) B1 c: _
ymax
! p. T8 s' Y, @7 {global-reputation-list
3 w6 Y) p0 i9 y# [% z5 r8 K2 W( e9 D# V& x8 s3 J. ^( e, V
;;
每一个turtle的全局声誉都存在此LIST
/ Q6 n- a1 e0 o% S7 p9 ]' }) p* Zcredibility-list
. f- d& O- P+ T# d+ M0 ^5 z9 K;;
每一个turtle的评价可信度
; F7 r( X- u# V' \) w  mhonest-service
2 D5 z( X7 t6 G) o6 D: Gunhonest-service  b* d2 t: D7 Y2 x& H
oscillation) w1 ]# p! K& g" h" Y3 K( o: l9 ?
rand-dynamic$ B$ E4 d' B4 U* R% X, Y; |% W
]) \. _  \& s7 _1 t! {9 U9 k
" B3 }4 s# s" Z" l
turtles-own[2 k: K  u# a/ P3 y! h: C6 S
trade-record-all5 Z" x& O% S9 w& p$ }" ^& r$ V
;;a list of lists,
trade-record-one组成
- }* x! o$ j0 G, Y7 ]& X: ]trade-record-one! E! ~- Y: [5 ~
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* N- A( h% O4 J) s) M
  Z: i2 w5 Z8 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) ^0 u0 B( ?6 ?/ vtrade-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]
' n& i1 q$ G5 f; x3 ]8 P" e' Icredibility-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
) I& M( v% U( E: H7 c! ineighbor-total  o9 U, f# Q% l9 v2 `& p4 `
;;
记录该turtle的邻居节点的数目3 |; E# m0 N: K+ b
trade-time0 N9 P& K2 d9 {  {- r
;;
当前发生交易的turtle的交易时间* C# i8 r5 [# u' O# M, w; n
appraise-give
* w& Z$ l5 j; t) I;;
当前发生交易时给出的评价# e8 h) j9 o  [1 C* Z0 ]5 p
appraise-receive
* ]4 ?2 O7 ~# W' I* I;;
当前发生交易时收到的评价( y- \& c% t4 r
appraise-time
" C, k" q; x" W3 r# O# ~;;
当前发生交易时的评价时间
" _2 c+ r, m9 {+ @9 V3 I! x. blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉- g1 X- C8 {' Q
trade-times-total
  T/ K. L, ]. ~8 ^( i;;
与当前turtle的交易总次数
+ t4 c3 w' D! |3 H/ Wtrade-money-total6 g" L2 i  t2 ^" [$ t! @
;;
与当前turtle的交易总金额
2 E' ~- e, i( wlocal-reputation2 h8 j! r, ~. F# g3 ^0 f
global-reputation% q' d2 d7 I0 I& a9 ?
credibility$ |8 m  k# b4 U3 [8 D$ v: f% Y2 F
;;
评价可信度,每次交易后都需要更新
5 W" K( W7 P' C1 ^$ W, f/ Gcredibility-all( e* S% I8 t( m  f7 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0 ]- z) k( Y/ q/ @& f

7 I  r+ Q% D( B. |0 a# M;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
; D# d0 r$ q  l, y4 M  ]4 gcredibility-one4 h! S' j: P8 \" M7 q9 q! I, B. G8 W
;;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  V: D6 S1 c( P8 _% S1 _: M
global-proportion
- G9 o% N3 n5 O7 D4 Lcustomer
( k7 a6 [9 G4 }! i) Q6 ucustomer-no
. C# L5 }! |3 z0 R7 I1 {* ~0 ^trust-ok
( I! d+ H9 L2 {4 B3 H0 F  Htrade-record-one-len;;trade-record-one的长度& w- b; O$ s  L" ?* Z
]
- I+ H& D" Q( z& Q" @$ G; N% _
7 V5 f8 C- O3 U4 ~. F4 C* y;;setup procedure. D/ k& G0 j& S% x, T  N

1 P  o- ^- u' E0 Sto setup- M  I5 J- z0 [4 T' M0 C

1 S# c$ G0 @- l# @* A, b6 gca
, |9 R; ^: B" h* p4 J  c, Z& _
8 h; R% {* D# P0 e7 z8 I
initialize-settings
- `% P4 L0 B/ L5 x1 `) u, J" v

, N4 d3 B% V7 Q) G; Gcrt people [setup-turtles]
( x2 O, F& X6 J- E2 L

: y* J; \  Q0 l2 Wreset-timer

7 [$ }8 t, I/ a5 q7 z' b3 f% v1 V5 }7 w7 ^9 F1 ^1 B
poll-class

) I* g2 W" p' ~8 ~
1 |7 {+ z0 U, c, [1 tsetup-plots
. c0 k; n9 X9 h0 G

5 j/ f) \2 O. ~9 T; H: G; Sdo-plots

$ E% h& y) y6 D# F: a/ s2 c) Bend
( F4 R2 z/ G( q* N) L1 i
1 p; W7 |- z! |# z* u5 Eto initialize-settings; K9 X* i- e6 r% E5 d8 ]9 T

* S% R- T* R7 |1 `8 p6 k; Cset global-reputation-list []
& B" I+ {9 j* f5 V
- L9 e/ Q2 j7 y
set credibility-list n-values people [0.5]

; ^; v, c  I# Z! g/ w+ ?5 {1 I4 T# ?1 h' V) }
set honest-service 0

  Z+ s7 X2 C1 S5 Z# m1 u. c$ m: q8 w1 m6 ~& S! f
set unhonest-service 0
3 U: k" y$ Q5 ]
; y) B# d2 @0 H3 N/ u$ s. K
set oscillation 0

) w! e( C' z* l5 l% M5 M) v4 Z% k# ^2 O; z# U
set rand-dynamic 0

3 e. b: i9 G4 T9 s! t7 C% {! eend
, J  I" X1 V7 J1 I
* O( ^/ x: g3 T1 s$ {; V+ K; Bto setup-turtles ; k" b/ D; d0 V  O, V' Z* d% X
set shape "person"
# @$ E; t4 d5 X/ b4 O) [setxy random-xcor random-ycor; m2 O* ], C9 U0 B, k  e& c
set trade-record-one []$ J7 i8 |$ n" C) k" R
3 S) h0 Q" [4 v$ ]& D& f
set trade-record-all n-values people [(list (? + 1) 0 0)] , L1 a2 @5 u  P+ B3 ]4 b7 E# p" ]
$ p: u  a. \2 k# c1 @1 v
set trade-record-current []
: l- U4 r* i( S% z, Z( H2 mset credibility-receive []6 L0 X) r' {6 T5 r$ h
set local-reputation 0.5
/ q$ [1 h6 D+ s+ x; K( nset neighbor-total 0
; [( B9 u8 @; `set trade-times-total 0. V6 q$ f' j6 m. c+ H* Y& V% E
set trade-money-total 0: q/ Q# m, O1 b' d) t$ c5 S" |
set customer nobody
9 D2 z1 I* w4 C! {8 i0 |set credibility-all n-values people [creat-credibility]
/ y9 g9 a/ X7 o& F" D2 L6 l3 Hset credibility n-values people [-1]! s4 o' K# k5 I5 I
get-color
. T4 ~8 O; `7 f. S6 e( {

% d: i8 [( z0 v8 K; j! ?2 Xend
1 g! ^% M' W, h! ^$ O9 K7 m
* _6 J9 U2 S7 e6 oto-report creat-credibility
7 y9 i9 A, U3 u2 s1 C' u4 r& Breport n-values people [0.5]# ~5 p; a) X& z9 h
end- M  O: B* j7 _! q

: R9 P' l% m/ T8 u, ito setup-plots
0 f9 A1 r  @: \6 F% x) N/ c  Q$ ~( F# \* {
set xmax 30
5 W* M) W; X& S# e6 }  t
0 o. O/ N; P4 @, K& I2 w* T5 ?5 K1 p
set ymax 1.0
/ ^/ B$ A& P' S3 Z

0 N, q: ^" b; @+ N! S! m: v# ~clear-all-plots
& z; S! H" w3 b8 v
& m) z; E  C7 a
setup-plot1
4 d* t& y; \1 N* O. a- g% H, f/ \
1 W  D  u! p4 p# ?3 I
setup-plot2

% _# f/ f- m: b# h
) {4 g6 f5 C, M  ?3 L3 ksetup-plot3
0 `& \6 v' I- D& q4 Q) V
end
4 C) \! K2 }7 G/ X
& M  @" F$ R" W, \/ y# ~# A  U;;run time procedures7 G& j$ B- ~' H# ]$ q7 P
8 L: `7 z- Y: g* N! M
to go( d. u9 M9 |9 O; {" C9 I; j
9 y' V0 a) O8 g
ask turtles [do-business]
  x9 X  G8 I$ R' Q8 `
end
& s5 S% x5 ?2 t5 n9 a# N9 a: ]& N# B7 O) k* T; f4 t
to do-business 2 H' S# a1 c) _. C3 T3 M. i- l( l
) L$ _0 N3 x9 q6 Q

9 w% c& x5 A- c( h8 |rt random 360

8 ^% _( P! e/ L' F6 |' |
+ g4 g7 g7 L( m0 R: w+ t/ Ofd 1

9 K4 L& Y3 O7 U2 Q) {; A9 s
% r! U5 m; K( u+ _) ?/ ^2 {1 k& cifelse(other turtles-here != nobody)[

# j5 Q7 q: I* o& X) N7 o  ~
" _7 P4 u7 a1 e% a# [+ l8 b( gset customer one-of other turtles-here

/ s$ V+ [0 g- y' h
, K( C$ _; v& M7 W5 w! {;; set [customer] of customer myself

5 p, _! x! B' U6 G/ L% O! l3 l/ w
7 a' ^* [9 c/ s; wset [trade-record-one] of self item (([who] of customer) - 1)
3 ?( I; m, r8 W" M2 Y6 W[trade-record-all]of self
- ^5 K( f( a+ a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 g; z% {4 _; w8 T
7 d  P6 h# a) K, oset [trade-record-one] of customer item (([who] of self) - 1)
- r6 @" M4 v# @2 V6 U9 j6 V[trade-record-all]of customer
, k5 r, v# X+ g) X. R8 m

0 M' U/ P' g5 b( gset [trade-record-one-len] of self length [trade-record-one] of self

' b, J* K$ @# G, ?6 d$ s8 a+ v1 W/ A- b) [' c; `
set trade-record-current( list (timer) (random money-upper-limit))

, m1 U) }% I7 I' _" y0 E% Z: u2 D# a" O) l! ~2 S* ^( T7 V
ask self [do-trust]2 V# ?$ k, C$ C0 q( r5 V2 h* \: S! D
;;
先求ij的信任度
0 [$ r* @4 l* ~2 F: v, d! \2 L2 A2 k6 I; L8 E
if ([trust-ok] of self)
) D$ ~) o" r6 v0 };;
根据ij的信任度来决定是否与j进行交易[
; f0 a4 a/ Y+ Dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 ]  ]% C- ^, ~" y+ Y1 l" D+ O8 b# Q6 T* O3 A, j, H( ^2 T2 G5 q
[

: [" @, Y/ O0 }. w. M3 t8 z" N1 @# p
5 m5 }9 X  {! U) ~, ^) \) W# edo-trade
3 V$ p6 J) {) [: Y! `9 Q
, Q6 d* R; r3 S% Z
update-credibility-ijl

6 @  Z0 k0 M! @; z; `0 X2 w/ B' H+ v8 M7 k
update-credibility-list4 U! j7 M8 |2 q3 g" o9 A- P8 G2 B& J/ D

- r2 j. R2 E7 R# h
! V( p+ E9 g* |0 d7 f3 V% g! k4 Jupdate-global-reputation-list
9 V3 `; K9 {+ @$ G" C

# W" i- s) m5 x. Z0 G" B3 x) Opoll-class

6 S; \! n( i: l1 y2 j* m8 S1 P. T
" W( S# b" r7 m1 l! [get-color
! j- Q7 C0 B; r# ]
1 {. @: N/ u" |# X6 j# p0 c
]]3 V  j; f1 {5 K) \0 O

2 j  J! Y( a$ m;;
如果所得的信任度满足条件,则进行交易; `- m0 ^8 \% T+ }! W+ `1 s2 ~
+ H7 u- s0 I* ]( n6 |
[
$ B) G; k' z. F. X

0 e3 K2 U$ E, E. K& ^; e% A$ hrt random 360
( @. R1 n% s) m% O6 C

! E. D( ]* n' _8 \: ffd 1

) c: r( M# e: S6 j' o3 X9 O* i2 ?/ S9 }) }
]
8 I% J! `* ~" i. @( j3 o" j

3 K6 B0 A2 \7 F! Wend
. w' @4 z  Q1 x% R# `
$ y. _1 O, E# K$ i! d9 u/ U
to do-trust 3 d$ s) Y7 E; n! E8 U
set trust-ok False0 e! l4 p5 R6 Q# I# D

4 m7 x8 u9 Y* ?8 O$ Q$ T5 i8 [' Z

: C0 T( @$ i. q( `$ w7 N% }3 K' zlet max-trade-times 0: |! _+ U# a/ y' \0 l6 d
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" \" C7 s  F; P+ k% k
let max-trade-money 0
% }* o1 ]1 R4 O% @5 c, R+ w4 ]foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: d. N+ K; C- I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ ?& D! D. S4 y, D( q
5 [: O% U7 B- Z3 i, a, k

' K! t. v- H2 v+ t" Xget-global-proportion  C  A* H- c0 L  @9 [0 S* ?
let trust-value& b# }+ T# p5 c; y, T, u
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)
- R( C2 B% }* I  I" p& u# y
if(trust-value > trade-trust-value)9 d0 |9 C2 Z, I8 H2 W/ c+ E$ t
[set trust-ok true]
- p8 v+ @1 F; G( Q$ l. h4 |8 Zend2 v( {: ^, [( `: I9 J: x  r" y
% e/ |- B# Z9 F) j
to get-global-proportion9 _; j) G( a. s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 M& v  K0 H/ @" f[set global-proportion 0]
* R( y& @( X5 A" _" }) _[let i 0' H7 m7 Z2 L( ^- G% q
let sum-money 0
+ w/ w. a: |. [( Awhile[ i < people]
) o+ J+ f7 M, t6 P: V[! `  a7 F& t7 s
if( length (item i
0 d, q% S' ~" C/ N" u* `* c/ J' V9 \, N[trade-record-all] of customer) > 3 )

9 ]  N: F  V: G2 ?6 d6 E[
, A) E4 K5 e2 ?  `" jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 c; D+ t, C# T' ^9 c$ J5 C% c2 s; T- T]
- N# E$ Z& i2 r]
8 ~! _. _5 @& x9 y0 A& g1 h7 _% S/ zlet j 0& E' i- I5 S- c. Q1 |8 F! b- o
let note 0$ B- i  V% h& w8 P& i1 R/ V7 O
while[ j < people]
9 o/ V2 v' |7 `& t& T) k7 |6 H[
# }; V3 D4 G, n) D( O/ M+ X5 F3 A/ [if( length (item i3 p  O/ f0 k2 l7 m+ G. V
[trade-record-all] of customer) > 3 )
0 o6 F/ H0 t! |! S* @
[6 K, b7 s# [  l9 @" p
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! h1 N0 z, \4 v0 Q* l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( h4 I' e; q- D: h" T- U# D7 q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 ?" E3 A3 P; r; X% k; p]
  l$ v% x, m/ ~' J( k+ H+ R! L! K]8 @. }; }% N1 a9 r% t0 F
set global-proportion note
" y5 O; _7 ~9 S2 g3 z4 E4 O]5 l, Z; K: w, N; S9 w
end& f6 v' @: g. W- r0 w5 b) ?

" Y) z: K/ ?6 \9 h' {to do-trade+ W' J/ o2 f: I9 V9 r( n5 s# u
;;
这个过程实际上是给双方作出评价的过程
& N; T; D$ S5 Z& l; V# X# xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! R; L3 G- z( ^. X; ^0 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 I3 w; k/ t& m. }set trade-record-current lput(timer) trade-record-current
) x, d$ }5 d& F0 n;;
评价时间2 _- u3 G9 V# D* S1 j
ask myself [8 J; y, ^) }2 R* M
update-local-reputation1 A8 `3 e/ w9 ~
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ \- o/ ~8 Y$ b( k]
; L8 a$ J; s. W8 D: r+ ^( U+ ]. h$ Yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! L2 x0 T2 E! C' _# U! y
;;
将此次交易的记录加入到trade-record-one  G+ r% R- |) f, X' u( m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' N  Q# I9 W' ^. j6 {/ C" M
let note (item 2 trade-record-current )8 N  Z  t- T: A% ^
set trade-record-current. o2 g2 s7 B4 B% n
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 T+ Y: g$ m! @. x4 ?; N
set trade-record-current  v. e% h5 q# U  k1 u3 y2 a
(replace-item 3 trade-record-current note)5 d6 Y% u0 p3 q& V# w$ B! }. r. y/ [
  e3 x8 e9 k. i" z. J4 F
8 L! l% Y  F# c( G9 s6 N6 [/ F
ask customer [. }( |; o5 ?2 |- p4 o% n$ z8 d3 t% l" G
update-local-reputation
1 {0 P( V( S% |set trade-record-current
- d9 K0 B5 `, e5 \  K. K(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, c2 _& U8 d: c6 Y! e2 k: V
]7 W0 _3 v$ Z  o$ P( U

& R% c# t% ]$ F& v" Y/ b& B
" y: h9 I8 `3 U" [% X+ C4 k' R4 g3 P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' W6 G2 N7 [- v$ x5 s4 s1 l

9 k8 G) h' N0 a, Q4 L* M, s. ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ ]$ P2 F8 x* T  h- h, n  V
;;
将此次交易的记录加入到customertrade-record-all
( R5 z' ~3 t. [: \+ ~( Aend( Z- l0 }/ l4 z  |5 m7 I  E0 _

9 x4 d9 g/ m$ @4 Y1 B- tto update-local-reputation/ |. r. W3 l# Q
set [trade-record-one-len] of myself length [trade-record-one] of myself
# \0 u8 b7 c/ S" y% V( Q. x8 w# x8 j. X) b  G
' G& U. V# f& M
;;if [trade-record-one-len] of myself > 3
( v4 w8 D( ~3 m& Z
update-neighbor-total- N; N( t" Y& q* ]) F  S
;;
更新邻居节点的数目,在此进行
5 C3 L+ r) ]; D# J/ m" H( V# Wlet i 3
0 x6 J+ J- u' ]" Q$ v- C& }% v8 Klet sum-time 0# u. m# k5 I& [6 G# t8 h# p  ?
while[i < [trade-record-one-len] of myself]) s7 e5 |( J9 q9 W8 Q7 R
[( L: c: Z4 T# u" ?! ?0 q: m% t8 `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! s; v& a+ L* c, U0 w4 U
set i
& u- E1 d2 `( P1 B( i + 1)

8 {" S) b1 `5 N]
5 m1 ]$ X/ P! e$ F, T, P0 plet j 3
" J" U. d% C6 A8 j( q3 x7 Z4 Llet sum-money 07 x5 r3 K: b! o
while[j < [trade-record-one-len] of myself]) p% t! R& a% \( n" ^
[
+ e, n' u. n# x) ~; Oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)  o; F4 W) u" r* Y+ a* s$ D7 A1 ?
set j
* _/ W7 o, v; J8 `8 r( j + 1)
2 t1 \2 z: d7 |) @9 w
]
/ k4 f* A: @  {( blet k 32 j5 o% `% ?. k: I6 m5 H  m
let power 0
/ s- |' S  Z' ^* S, q' C7 u( |! j7 a) R9 Plet local 0
, M: S/ }: _% Z# V! swhile [k <[trade-record-one-len] of myself]4 u: |) W( ?7 R0 @; B$ q
[
) {- f- y) X( Y- L+ n: P( ]  r* _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) ( Q* N* v6 ^4 Z0 M1 O
set k (k + 1); {6 \3 u. d+ y6 |7 K
]
8 n$ f) L: s5 o) ], f% A- [. Tset [local-reputation] of myself (local)" J. E% d+ D% m' R
end
4 a. U$ A) G/ @& `* v* Q& e4 W  L; V% q. E6 v* V. {: Q. J
to update-neighbor-total0 ^; o  @$ a: ?5 Y- o; \' T

- T4 `6 H" ?3 {' e" U$ U. hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% D) a0 ]9 J' F& |

0 ^# x- F) f; K8 K0 ?2 D3 ^
4 x% c8 D  ]5 t* w# ~! l
end5 {7 z( F( L) k; v4 g" r5 h
4 K% i. T6 q" }2 b. q
to update-credibility-ijl 8 k* b1 E' q0 k/ o+ p  X- ]! n

$ I+ M$ d: g: y; l, @7 e' q+ }# \;;
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。5 M6 M2 @: S0 u% D) l/ S* ~
let l 0
: h+ Y6 r5 r$ F& s$ kwhile[ l < people ]6 o" I- I/ _3 K# F% A/ |; C
;;
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2 K4 E( j9 ]- Q  u; z: D- L8 o
[
* p- r0 U7 x5 n' o2 U) N7 m( \- Plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* W4 b# w4 {: \. t  }
if (trade-record-one-j-l-len > 3)$ w: ]. u' C. X7 f- |( y
[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/ G% A' w! k2 D/ A* C
let i 3
& e$ ?7 n1 N  zlet sum-time 0( V# v. P4 H# M+ b9 z
while[i < trade-record-one-len]
8 ~" h/ Z/ ^, n8 `& m[
* f/ @7 u  B" E4 [) yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( b, K7 c" H+ M% L
set i
$ }" F3 P. b! |# w$ }( i + 1)
4 J5 O! n; f' I
]
# [+ ~* g& M2 e. L+ e& {let credibility-i-j-l 0
6 H7 N6 P9 j0 {" z;;i
评价(jjl的评价)
! Y7 b0 k( M0 D5 t. h, a; mlet j 3) J* O8 e3 A/ {
let k 4
/ B9 w' J1 }7 q: t4 Cwhile[j < trade-record-one-len]3 Y& P8 l7 y. H- C
[
+ C0 b3 b" o1 i, {2 _; z# Uwhile [((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
3 Z" j* ^4 Y: E: jset 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)
) M; C4 n- o, X3 L% a  Mset j/ M! Q) t7 C6 R- e' e$ B
( j + 1)

+ q: w0 U  U- ~" K]
; `# ]$ q' I6 d. i1 Vset [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 ))
0 G; m  T& V( O, M. Q$ p2 R  k+ o2 ]; |5 R6 k; D

1 v8 S  B, F; h' Olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& m3 n8 [4 }5 E: r4 n: W;;
及时更新il的评价质量的评价% D, {7 J0 q- Q. O% F1 }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 d0 r8 s& C  u( Bset l (l + 1). `* U. i2 K2 d: R; d6 R
]
! [# y, o! ?/ m/ X7 }/ gend. C/ J! t( |, c; a: n
+ ?# M3 }, t- P2 d3 ~7 R
to update-credibility-list
; W7 }& j. _! _" x, R, Qlet i 0% [. `( @* i" T4 U' H
while[i < people]/ Y4 a' d& J: g. i% I
[# `1 a" R$ P. \0 h/ K; A
let j 09 j5 z+ ]/ Q5 v
let note 01 R  n" ~8 `# Y; `8 D
let k 05 {5 w) A- K6 N; P* \
;;
计作出过评价的邻居节点的数目
+ N5 Q/ R, U* m% \- J( K* Z5 I: l: ?while[j < people]( Q% P# @6 O6 d% Q
[
+ K& }$ L% ^; ~* Y8 f% k) Eif (item j( [credibility] of turtle (i + 1)) != -1)* j( j% h  b$ z  b  d0 H) g
;;
判断是否给本turtle的评价质量做出过评价的节点, S, H6 m/ D% ~: l
[set note (note + item j ([credibility]of turtle (i + 1)))  @/ [0 Z. d  x+ }1 J: ?
;;*(exp (-(people - 2)))/(people - 2))]

; g7 j- `5 v, Kset k (k + 1)& f& g- A3 P* D, }0 f
]
) }! Q) L; r7 ~$ e6 u6 T& [1 S2 w9 e& l- hset j (j + 1)& f& y, @0 H5 ?2 N* a
]
1 j/ L/ l! G# W5 y% p5 H& N( kset note (note *(exp (- (1 / k)))/ k)
/ M5 q: Z. w+ F7 o; Gset credibility-list (replace-item i credibility-list note)
! \6 X, o; ?  c+ r! ]! Mset i (i + 1)
# s) d# I3 }7 @, x: S]
: E# s0 m3 S) L% p* ~end
& D' H* i/ v" a3 t" \" p% C: z7 G8 l' S. Q
to update-global-reputation-list
8 r/ V) B( i* S! k2 a3 x! \4 [& i2 }let j 00 L5 N" p# I" X7 ?/ W9 d' M
while[j < people]
' x: O; _1 C' u0 L[9 X, J( V8 z" ^# h! q4 h
let new 0
# P! ^9 r! ~& `3 {4 R;;
暂存新的一个全局声誉4 m% t4 Q0 J' `% z
let i 08 g  S6 t$ c# d# M" K+ y
let sum-money 0
; w5 A' _' r% y' j" hlet credibility-money 0
3 l& F" D+ O8 o! j5 x# q+ N1 Rwhile [i < people]: q0 P9 h  H! i, a# C
[
6 c2 c  n' @7 T1 X+ w$ G+ p! g  |set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" i# V7 C+ c" d) ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 ?9 D/ U; i) [, c1 k( j! Z  l
set i (i + 1)
5 \: w0 Z- B* ~]
6 m+ V2 \4 ^( R. b% K  Ulet k 0
2 i; ]9 a. M* t' H9 k) Q9 ?let new1 0
5 _/ V- |; _# X* \! q2 @0 Uwhile [k < people]
; L. o3 {$ ]; Y/ }4 _[
- w2 f9 y" m: @, Tset 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)+ e; x# l$ G+ i- M7 p
set k (k + 1)6 H: j; {+ O; U3 `. i
]
+ j) ~2 T' W! n4 b5 B+ ^7 `! fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: z4 H: ~1 Q: m) j6 F1 v8 ?( tset global-reputation-list (replace-item j global-reputation-list new)8 \- ]& @/ ~! I- M6 B) w, Y4 N! n
set j (j + 1); I$ x6 Q2 @0 y; U- T4 h" k  C# Z
]
7 T! R, ^; X3 w4 g+ m- x" e$ jend
4 o9 s- \# H1 Q6 a( P
& o! N% Y% ~# [* B
6 ^: q  V8 X8 Q( N; r; u! ?( t
, e% M- y9 V# B. b5 Lto get-color5 `1 f. _( F0 `5 r
( y* r* w6 }1 _7 N
set color blue

) }4 Q- N* X% T9 aend5 K2 |4 F" [& J% [6 F3 r5 ?( x

5 z; p. K6 {3 i/ i( U6 `5 Lto poll-class( }% ]+ K. G9 Z% ^9 _! Y
end
! w" z" @: U- m. h3 \
' _  |$ E0 ~$ V- U- bto setup-plot1
6 B2 i: O5 A7 j( A8 p3 S" o/ _" Z7 s- C6 D& r
set-current-plot "Trends-of-Local-reputation"
3 h& b6 G& J: `6 Z: u
7 Z9 [/ m( G: @& q. W6 m/ Z* o
set-plot-x-range 0 xmax

/ B4 _3 p' }3 d+ r# Y
/ A" Z7 o) J* ^! F3 N# Aset-plot-y-range 0.0 ymax
3 C# e, i! L- ~) _4 o$ }7 d8 ~6 y
end
. V& n5 z; _( B$ B4 a) j) T# }4 F" s+ Y1 }5 M8 Z7 w
to setup-plot2
; B* @8 H+ p2 r, Q: ?* l* {2 c' o9 w( [
set-current-plot "Trends-of-global-reputation"
, f5 I8 Q# \3 x, i) j. H4 f

8 E4 w0 h$ a$ S2 t- W3 vset-plot-x-range 0 xmax

9 [& A! F6 K9 K7 X4 ^# R
; n8 `  M( L: W- t  \7 }, p7 pset-plot-y-range 0.0 ymax
. m) n1 L9 S# L4 I/ p
end" a4 e& h( R/ S: ^
  J. N# a' y7 `/ A, B, S/ V
to setup-plot3- Y- }6 l5 n+ y& W. t

5 O% @1 q9 W5 _, B8 _set-current-plot "Trends-of-credibility"

+ U( n* O( V, P% h5 [" |5 L) A' A# R: }0 y: t! _
set-plot-x-range 0 xmax

+ q% I- G& _3 G2 _5 S& E9 W
- R2 ~% E! a5 p$ Lset-plot-y-range 0.0 ymax

% e; y4 D4 s% t5 [( r+ Oend# ^2 y$ y, O4 V/ x% U

* W/ T8 c) V5 l( ~to do-plots
6 w7 n- @+ }4 @0 f* }- r- B7 [5 Lset-current-plot "Trends-of-Local-reputation"
3 s' V  Z- f, o2 yset-current-plot-pen "Honest service"" B- _3 _4 V; F+ i4 `. k7 b! Q
end3 y5 D  k5 K9 l7 n$ E. f. O# Q

5 s" r% k6 X( O: X[ 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.4 i" h3 q; s5 n

4 V9 C5 Y: Z1 Q, Q/ _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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