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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:/ r; t5 R- c( j! `% W5 e2 s) w4 U
to do-business # D  R3 b7 y3 A( c6 W* d
rt random 3605 L5 x' D2 s+ z& S$ _' R
fd 1- {" y5 Y" m# K& v# t' R
ifelse(other turtles-here != nobody)[
% z# x, E  i) Y( [1 a0 @$ N   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.
% H- L" p, T, V) ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; k" ?- R& Y* D5 W$ s2 x" O" }4 ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 W( O+ Y* z& I& D) A- @   set [trade-record-one-len] of self length [trade-record-one] of self# r: t( t. f9 d8 A3 z* @
   set trade-record-current( list (timer) (random money-upper-limit))
/ A" T9 I0 ]# n8 o7 @7 w7 r# @, m' @" S" m6 a" C
问题的提示如下:! m- u4 F7 I+ o) p) Q5 X

: Q$ Y* P# I: \, t0 ~4 K( berror while turtle 50 running OF in procedure DO-BUSINESS
9 E9 L7 z. y- [# n, O$ m$ _/ e" F" J  called by procedure GO+ c# W" A6 e) u: ?/ a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 J7 r4 n. k8 `
(halted running of go): J: a' K( ]- y/ I) e' ^% R

% M' ?2 m" d! b1 u% n9 g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~~
. q; D) _+ O5 o7 W  }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) k' v+ C, h8 f  g! T  z  e4 N0 u
globals[
+ D6 U1 J2 t, u2 d+ y$ [xmax
6 G0 G, l1 \, J/ R. Lymax; l7 A* V5 y+ E+ a( c$ C
global-reputation-list
5 t, i- b% ~/ [& ]) h7 ]
& d; s4 ~: d+ W* u* |;;
每一个turtle的全局声誉都存在此LIST
- J" U' d/ N3 W, H( Q" [. Scredibility-list
; L$ Z& o& e; b: T;;
每一个turtle的评价可信度8 Z3 }' X2 {/ x: W  u% l
honest-service2 n' _' M: E% c9 P; _
unhonest-service5 F; A, j( J' [, `2 Y* {. u  p
oscillation
, U4 R. E5 W# grand-dynamic+ K1 B+ s( O, b
]
# }4 E$ e! S- ]2 q  P4 A
8 y) z, {2 k) d2 B0 Fturtles-own[+ q! k; a& s+ f& g6 ^. K
trade-record-all
+ W8 A: ^9 S/ F! _;;a list of lists,
trade-record-one组成
  Y+ |, e# m$ o7 S1 Rtrade-record-one
/ x( N! V* h! K* `0 i. D. o1 x* l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! @( T. _, T  d! V) l* t* G
1 F/ m/ |: M) G1 i9 B! z! T9 N
;;[
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]]) v9 e. ?5 r" v% H
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]
( N7 t. F9 ^1 Y8 e" lcredibility-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
2 F; h. N4 z5 h2 D4 ]- Y( g+ \neighbor-total: K+ G" s! n% n( r9 H, |4 z% P
;;
记录该turtle的邻居节点的数目, T5 u0 Z. ?4 ~' h( H
trade-time2 `6 v& c! [- O$ j) u
;;
当前发生交易的turtle的交易时间4 Z5 B0 G7 f1 Q7 Y5 s& x
appraise-give
* x/ R; k! p% \. A;;
当前发生交易时给出的评价
& V" s  i* F! f+ B1 M9 _- a0 [+ _# yappraise-receive! Y3 t; \; v2 b9 s! g
;;
当前发生交易时收到的评价  q1 F% k$ l& O; [# H1 N
appraise-time
1 f7 V" y  @* F; W$ n;;
当前发生交易时的评价时间8 P, s. {! f' L7 u* E( L- E4 f) u2 y1 b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 m) i2 m  m% g3 v, S' y0 y
trade-times-total3 e5 p2 r& m# ^  D1 _( Z
;;
与当前turtle的交易总次数
5 y3 q+ l- f) @* u( D3 _0 @trade-money-total
3 [! ?0 n/ [2 x2 c: r3 h;;
与当前turtle的交易总金额
2 W# `5 u  l0 W2 P9 o7 elocal-reputation
' j: \  f* j4 K: u  hglobal-reputation) N  d7 b% b& b  J3 K- v' }
credibility; Q! |8 b5 d; Q" u
;;
评价可信度,每次交易后都需要更新8 c1 g- Z0 P6 \$ W
credibility-all
2 F# S4 N; s9 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
9 a+ E, u# o$ p  s% ^$ X' G7 S, R( w& G" t- h! a* N6 J
;;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' V" \1 ?- b% U0 W6 d# P3 J+ c
credibility-one, Y1 V7 a; `+ @' R
;;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 q+ k/ M, `9 R! qglobal-proportion
3 O5 F/ E" E1 ~( O! S, Lcustomer
/ ?$ N; B6 n( Bcustomer-no
. q6 N! }% m, w( X6 Xtrust-ok/ p& R1 b6 x9 }. h+ w0 _
trade-record-one-len;;trade-record-one的长度; d' A  z" C( c2 u' j* G  p8 a
]
9 z: g" d) y6 t- u; m3 H
1 @6 P8 A, @# _;;setup procedure( }2 ^# ?2 `; u: j" C- P$ y2 C

1 K' A; R2 K3 G5 \9 ~% N9 k) Yto setup) |  p" T& L: V" n: Q+ e, w9 F

+ j. F  ]6 m; `6 y8 P; pca
( i! w* }& \2 r8 B/ {3 y/ r- @% Z

# m. V# [! c! U  h. v6 V4 yinitialize-settings
5 _, D. f3 `$ V/ h2 A9 F* m

; ]; X/ i% p1 R0 |0 _$ ycrt people [setup-turtles]

* o" n# K( C6 Z' @6 G$ r0 R' m1 J" v8 d
reset-timer

4 n: D& z( U, v2 G. v
1 h4 f  L% q: M" p3 Spoll-class
/ d4 e# `* m3 s, J! a  V9 t/ W

/ z0 x1 o* v/ i  v3 I, ?% csetup-plots
; `( R: s$ j' K# ^% R1 t$ [4 Y, ~3 B9 e
% v) A) s. I" v3 I$ A2 w
do-plots
. H5 _+ l% }+ `
end
  ~! c( i0 u& M* |) {1 H. r, m/ y( Y
to initialize-settings
2 d( E4 _3 X3 F  r5 |* O! q' @9 d/ c% u4 {3 _! L1 @! V
set global-reputation-list []

' ^7 X, b3 o9 L
2 g, R' N/ j6 Tset credibility-list n-values people [0.5]
: L, ?  o3 g0 c3 Z$ ]% d9 M) [7 X
0 c, G; Z8 w- f% i, E! q
set honest-service 0
. o% \: L& k- g- W- q  j3 m* ~# {- Z$ Q
1 l7 P1 }5 w; Z; f9 v
set unhonest-service 0
$ Q- A7 ^9 g/ d& q. H
+ a2 H& P5 q1 v% J
set oscillation 0
1 r, n3 h) s& N9 v
4 X# `" t- R9 J+ [; I" V$ f5 M
set rand-dynamic 0

; s* Q( S; r4 V  w: [end
) r* K0 S/ O) i9 t  U
5 Q, z: @  x2 N/ xto setup-turtles + \  C4 ?6 w9 V$ r7 d
set shape "person"
' j6 ]4 V1 ?) k& M+ R. H# ]setxy random-xcor random-ycor3 b2 T5 C, x  }' z7 v9 g( T1 T
set trade-record-one [], V2 i2 \* Y. |6 y. r( @
3 u& b2 {" K0 M- [$ S
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 P! n) m0 }. l+ o: I
- W6 ?0 e1 b. {7 P, h
set trade-record-current []1 |5 Y. Y2 H1 \' g! f9 F% n
set credibility-receive []$ k- i0 z/ \- M6 g  h) Y/ h0 G7 v
set local-reputation 0.5
+ \% f# P" g) H  Jset neighbor-total 0
! p8 z) @+ }1 eset trade-times-total 0/ ~4 |6 `1 L  B# V
set trade-money-total 0- s+ k, V8 R- b2 G" _6 ^
set customer nobody% }1 G! _5 ]/ [) \; z
set credibility-all n-values people [creat-credibility]
4 ?; P3 b2 X- X" B/ L9 Lset credibility n-values people [-1]
* G- a, V$ A- {! M) w, L4 eget-color
; f1 v3 ]4 D6 t* K3 ~0 a8 i5 E

( N6 T0 ^# R& O, {8 nend
- Y3 G+ f; w  t" N+ Y/ I
* s) H+ n% Y0 j1 h1 A0 |3 a! Fto-report creat-credibility
3 ]1 e- @+ u9 x+ Yreport n-values people [0.5]
$ p1 p$ ~" }$ I5 b" l/ Eend
0 r8 u6 [$ u& m- m3 J3 ^" [, P) x8 h8 H
to setup-plots3 }+ b: |1 F* P

4 A- H" O5 |9 m% W) W3 y1 g0 lset xmax 30

" x5 J8 T4 h* F% T8 H  p9 {- `' ^
set ymax 1.0

5 C1 o# O) ?0 n* h$ u+ l3 J; B* {  C6 a  _7 W
clear-all-plots
/ q: q+ f4 H! t2 S1 D
' _% v& Y0 \/ |5 \
setup-plot1
2 F; ]* N2 K$ w8 Q  t

. k; K1 e5 V2 s. s4 Ysetup-plot2

5 k( Z. @7 s5 {3 ]- }) Z) N4 k+ |4 A5 U: R7 v' K6 {( q6 v
setup-plot3

% k0 {# {, e) O2 d* Tend
# D, D) v! N' |  Y4 Y% r3 |3 [4 N; {+ V
;;run time procedures
3 O' J! ~" c& b  s2 k% t1 z& \; E
# c" f, f+ ^8 E8 T  j2 sto go' }' s5 |/ @' u, M2 E7 _/ X6 q( X

! Q5 |% a# b: {/ j# x/ ?ask turtles [do-business]

5 ^# H! n! |% C: k# r' G2 I/ m" Aend% ^! J# @/ r& Z! Y

; U$ U# w* i* F( f% Xto do-business & z# O; B' x6 ~/ g4 W" m
4 R( e9 ~2 k' h$ x+ Q4 v6 h2 H
$ ~2 U1 Y2 |2 |& `) l5 W
rt random 360
9 u# K5 A7 [7 ]1 m( M

6 z3 o/ T# m  E5 U7 ^% qfd 1

0 t9 P  Z8 }5 y- k. R. }! G2 q) \) m9 ?) @
ifelse(other turtles-here != nobody)[
7 `8 d1 F* h+ c0 m8 S0 O2 z/ N: G
) Z" u, A% j% M0 s2 p* |
set customer one-of other turtles-here
7 b& i- \- U& |
5 r: d. u( X, S; y( i5 f
;; set [customer] of customer myself
3 G0 N( V% t# @' e+ H
2 Y' P( `/ E' @2 Z
set [trade-record-one] of self item (([who] of customer) - 1)
- {, W" p% B9 Q0 X9 b: d2 U' X+ G[trade-record-all]of self
$ ]6 J- R/ f" Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 W' V9 z* C! c' \+ U1 F; l- |. ]. j& X8 r6 p% y
set [trade-record-one] of customer item (([who] of self) - 1)
, m6 h- w/ e7 h4 n/ X[trade-record-all]of customer

8 j9 N2 [$ {% L: L3 k7 E2 Z7 x4 s* `9 I
set [trade-record-one-len] of self length [trade-record-one] of self

' T8 \1 B' S8 L7 j8 b+ b+ j
+ ^, x; g5 _( }6 G4 J/ m0 a1 r- R' Fset trade-record-current( list (timer) (random money-upper-limit))
7 f# I; V: }5 ]0 Z, v5 W
- `( d/ c9 J+ K" _% f
ask self [do-trust]
6 A  z# n( r  S: H;;
先求ij的信任度
" e% D" q% G, k( f4 w! ]4 U
" n3 }1 {, w8 s; t- E- ~if ([trust-ok] of self)
* a4 T9 c9 w  W" `* |. t; z% D, Z;;
根据ij的信任度来决定是否与j进行交易[' J# Y4 ?5 ~4 H! M+ b( S
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# V- Q, W5 E" u1 J' D; N! p6 T3 N. q! i* h8 x( Y0 }, Q4 h
[
! \0 A9 j) u8 b/ B& b4 H
9 x; i2 B+ m# l
do-trade

7 G" c* j1 l( B5 W5 r5 U3 |6 I2 E: r6 Z/ t& y3 f" T! H
update-credibility-ijl
4 m& v" o* P. O: w

7 F3 C$ }8 X  c/ t3 ~! xupdate-credibility-list
0 D8 B, D( t/ x9 l
: J1 R) @4 Z. h$ D2 r$ R( _2 y

  g- P& q6 W# j& w4 P6 Dupdate-global-reputation-list
3 R' w- P) _2 v* G2 O/ f: Y0 X
  \9 @' q: o6 q5 j3 V
poll-class

7 R! E4 h- K) P0 |5 b! u! p, `- M- f8 G9 C  `. L4 E* \& A
get-color

# J( y6 A# K: e4 h3 P' s9 y$ |$ i: |  I9 v
]]
' S9 n" t: J1 ~) G- S$ T& w" L* E. @6 b  r- |* g
;;
如果所得的信任度满足条件,则进行交易; X0 n, l: M$ [$ m- U
# B6 W4 z% a$ T# }0 ~
[

4 N* `- z- W9 A" b; v4 |& N2 [+ e+ A$ I; c
rt random 360

$ w2 a1 ^4 S$ s8 B( f9 O* {) T8 t, l& Q2 b5 i3 m0 b! Y
fd 1

) R/ r0 I" f  r( B4 ?/ O( b
& d* U4 X1 K6 P4 b9 L]
' j, o9 a' ~' ^9 I
, x' S+ n3 z8 v$ p+ w0 h# k
end
" W9 A' `9 f- N" I
4 |/ ^# o' Y- ~+ e+ B( z1 C. F
to do-trust
! _8 T) @. j; s0 u7 d0 X2 s& Bset trust-ok False3 V8 ^( ~6 }7 P
+ }" S' t! q8 \; G, c5 G

" @* s  z1 [% E) F% Z" Slet max-trade-times 0
- K6 M7 t4 a' o5 c9 Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* E$ N5 G; q: n5 C2 }% rlet max-trade-money 0. B& j, C6 J, _1 j) f' J) G6 G
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 i1 |5 f1 d5 \, B2 M6 Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( {; p' w9 J7 }9 o" s0 Q4 i, B; K! a, N/ H' m- P. I# K2 ?

2 K+ q6 S. q7 L3 a9 Kget-global-proportion( g8 j( k' {) V& f& j( E- }
let trust-value
: q( V# {- T  o2 q/ Q2 Alocal-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 {3 {; C+ Q# W$ w4 x- R3 x
if(trust-value > trade-trust-value)1 Q" o& j; E; _
[set trust-ok true]
8 d$ L. G2 Q- q4 W3 R7 x( @end
4 S; \  F6 u1 y) U: J# T: U- K. N' f7 h/ @: q
to get-global-proportion
# `& `/ `& S6 \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); [# i: Q8 A! ]3 Q0 T
[set global-proportion 0]% L2 v& V- I, i5 ?) i8 J  Z4 V
[let i 0) h, Y" f. ?& L1 D4 h+ b
let sum-money 0
: w% i% V& G, @1 E6 I2 \" Lwhile[ i < people]) d0 C# b8 d6 `* L. T
[$ H5 u$ e! ?) k  F
if( length (item i
+ }) r/ B- O1 X4 w- s- N' @9 V[trade-record-all] of customer) > 3 )

2 W) b+ G. d) F4 X4 k" h[. j1 V3 f1 Q1 Z5 `8 w. Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ ]5 m0 d# d, x) Y1 ^* B4 k/ d  H: @]
) S" M5 i* o6 K0 \) J8 Y]7 r! a: t4 T8 w5 |
let j 0
& F, E6 K( R) Ulet note 09 }- _) O, f; n, y8 T8 G
while[ j < people]8 b) Q" J" p2 I) b7 ]3 }
[, X8 g. {: s8 Z8 p7 s1 k; S
if( length (item i; g3 n+ s% F. @. Z4 b& _! j
[trade-record-all] of customer) > 3 )

' i) M$ h3 Y$ `2 e& v3 W) F+ Z9 s. I[6 o4 T  a% l: J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 Y! p( j  G/ S3 W) H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& \2 I8 ^$ O# E2 t; K( ~1 G7 d! o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ g! \! G8 F: Z& {8 i: j6 A# e
]+ ]$ s" n- g& q5 W# T! @, \
]
4 W8 [5 }4 z6 kset global-proportion note
) n8 m% c, y$ b. }, ~& v, T3 S8 N]
( J* E4 W0 ]4 xend
) u. N  J* C1 ?$ _7 |: z
$ ?: H" b: C& C( g* X# d/ I+ T( Bto do-trade
1 v2 F3 M) Z5 G;;
这个过程实际上是给双方作出评价的过程
) S, ~- m( I  ~* H: d$ ^- Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 a* j) ]6 s8 K6 i4 ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ W8 ]3 P6 G, ?. w+ n
set trade-record-current lput(timer) trade-record-current: g( q- h' y4 z8 m( h: |
;;
评价时间
$ {0 B: P9 E5 Q6 W/ J( Wask myself [
) w% H8 v& {$ h* H6 Supdate-local-reputation
. \/ ?3 x8 U8 `  ^( L$ Pset trade-record-current lput([local-reputation] of myself) trade-record-current+ F$ A/ A! J# b1 A# j
]
* }5 n3 q6 I1 L4 M7 R" jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ l7 B0 X: G: W. e, y7 m
;;
将此次交易的记录加入到trade-record-one2 t: @6 Q3 {* g6 ^; E1 _' o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); O/ ~7 s+ e( t  N! m4 \
let note (item 2 trade-record-current )
% v5 h0 I  t: L1 M, [3 ~set trade-record-current) c# n7 e! Z2 X4 s
(replace-item 2 trade-record-current (item 3 trade-record-current))
; b6 y: \$ k6 v
set trade-record-current
5 Y+ t1 P, h9 W- J# D(replace-item 3 trade-record-current note)
9 l- A1 ^1 U" ~; [" |! B3 Y" R0 d$ z5 @! N  b# Z, I8 S
4 ]. k0 x. f( O0 E7 o
ask customer [
2 m8 a. @5 j# y7 N6 G' pupdate-local-reputation9 ?% l$ c9 d9 ~$ ~
set trade-record-current
( B. O3 F; x. A/ R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 U/ w5 L! z  Y2 Q' F]
6 f$ s  E1 l+ ]  ]/ K* Z
% C+ p6 x0 {+ R% v* v8 c

" t) T. h3 Q. N; H! I0 j" ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 ^$ S# \% H, g( l7 V, k

0 r. j0 r8 S* V5 P+ j6 Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% ^3 e* c/ Y: ~& B) u;;
将此次交易的记录加入到customertrade-record-all  k& S$ y' |) A4 n  V3 q
end
. @% }# _# A# Z# V% G
" u% x# @$ e& W+ {8 e3 rto update-local-reputation
2 U: o& _" `. `7 _; Vset [trade-record-one-len] of myself length [trade-record-one] of myself
6 g- S5 I" e2 j3 c( X- R# N
, p+ j  m1 I# H1 N$ R
+ X1 [/ C, q: U6 u. b: \;;if [trade-record-one-len] of myself > 3

/ S1 c7 m( J( z0 [* Pupdate-neighbor-total6 L, Z" ^! h7 N) b
;;
更新邻居节点的数目,在此进行. r7 ]5 `+ ^8 K! h/ R) G
let i 3: {: @# B0 `& I7 d! a  O
let sum-time 0) S- E* F3 H9 X# P2 \0 l
while[i < [trade-record-one-len] of myself]/ O/ m% ^" @6 `6 P3 X
[( u7 e; `* x8 Q' k1 {
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. c8 K- |( c7 ~' K( s% o  |) rset i. w) y( G+ {" ?& K; \6 i
( i + 1)

' d* J0 _, Y# u: V+ D" |/ B]
5 o& ~8 Y' r: H: e+ ~0 ^let j 3
' e: j' Q* w0 z, Ulet sum-money 0
  E+ K/ B4 P  M+ |' K9 rwhile[j < [trade-record-one-len] of myself]% m+ F$ G. T  w( c; C
[
- w: k/ s# d* H- ^9 tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) R6 |0 n/ \5 n7 L$ k& P6 Xset j* ]3 G0 _7 Z% g6 h; L
( j + 1)
# P; T" a2 D+ a6 J4 K
]7 Q. F' X/ }* j: ~: H5 \; q6 L
let k 3- ~- C1 k" r! \9 o8 V- |1 x0 g
let power 04 n9 t" V/ _# o7 z0 b* R
let local 0
4 D3 p% T- r9 ]6 U' z" @2 f& Hwhile [k <[trade-record-one-len] of myself]
6 M/ [' X" ]4 F[
% I' L; m  i* a% E0 F: yset 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)
/ P* Q! F! |' [; Vset k (k + 1)
. B, i/ j) M& T# F9 N]
3 T4 n0 E4 u2 i) j, _% ?9 K% m) [# Wset [local-reputation] of myself (local); |" Q! Q1 f1 V+ G$ s
end
* m' B3 h7 V6 C" @# i: _4 X, g% V# [. Q9 `) {; q
to update-neighbor-total7 K( |- G$ H$ B5 @. F0 @( N

$ J9 ~8 b7 Z1 W) T7 _, ]8 Lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% x+ C  f9 l& j) f1 o, {9 I5 l* B% F

1 X- N: y% g& e- z7 Eend
& Q+ F$ f% p( [/ s8 l+ o" x1 O" O+ Q0 r3 ?6 X  j: D
to update-credibility-ijl , x" L3 d) i7 t

, z0 k# P2 \, 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。
( L$ Q, h* Z: V  N. j2 Ilet l 0
. ^" a( b- c. e/ Z2 }+ R+ w  fwhile[ l < people ]
' j6 w  J8 i4 t7 F, O0 |9 I3 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
( S6 W, w& F8 q. d9 C1 ?8 j) m[
+ }& Y+ F  G; S7 W' ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  W5 ^8 Z& e; w( z% L% Y  [if (trade-record-one-j-l-len > 3)1 u2 J9 ?* y1 ^# x5 [- V+ M4 q
[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$ J, A; C! F# hlet i 34 t$ T& ]9 ]+ M6 m" l7 D- J. U
let sum-time 0
% M; K  s# t5 F( f4 k- pwhile[i < trade-record-one-len]
1 X& D  w8 R& i. o* q9 B[
/ [: N) N6 B1 R3 Q0 @- j: p6 R* Q1 aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 P% F( U/ e( H7 L0 V( P  F
set i, l; d" V7 _0 z+ m) S9 F0 l$ m
( i + 1)
) ?# Z8 f0 O. j) f( H& a
]" Y: E: n& E8 G
let credibility-i-j-l 0! L/ f) U( T% }! j" v2 @% W
;;i
评价(jjl的评价)
; \# f9 s* T6 Hlet j 3( T" p( m3 q' {/ D0 u2 i; i
let k 4
8 l2 ^0 j7 b. h* Q1 Awhile[j < trade-record-one-len]& b0 I% X! N2 O1 w6 k* b; R
[
, r9 M+ e. D  Y/ ?5 iwhile [((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  G" D% f& l# Q0 ?" G' z: I! \/ ]/ s
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)2 ~  m; L6 M, [3 S% W( c
set j; t7 O9 l8 E# }6 m
( j + 1)

2 g( g: M# F4 r0 h  w, v* f7 D& R]& I9 s% r; d3 }7 h# h
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 ))0 p. ^" m/ [' V( ]  F
9 m9 C! ~+ s2 J. N, }/ R
: d0 R2 B0 |  L4 I3 H0 S3 K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  u5 F- ]( G. E  u  d- C. g! J;;
及时更新il的评价质量的评价1 |; d3 q+ _5 `" s( A8 R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 _4 d2 y; y; G8 H
set l (l + 1)
& e! v. S3 T6 L* c+ |3 b- W9 k]
" U3 ^8 i: m) R4 A6 B( r: i, `0 T: ?end" A1 X' _! Y* @5 ]
% v$ x7 d3 G% `8 `  U! ~1 a8 O
to update-credibility-list  ~# k6 o& {8 C* [# a
let i 0
  V. V/ C+ j( \8 J! {while[i < people]6 y# t/ y7 p! ~* M5 M
[
+ P# Y' o6 ?( J' p& klet j 0
' ]: U) N. S, J" `, u  Glet note 01 d" K0 L3 Y8 |6 {+ ~
let k 0( \. i5 G; Q3 D% w; H- B
;;
计作出过评价的邻居节点的数目
+ Y0 u7 b% P: {while[j < people]+ x+ g! c# P4 u
[
: g' @' O5 h% }if (item j( [credibility] of turtle (i + 1)) != -1)# w8 f0 [, X$ H
;;
判断是否给本turtle的评价质量做出过评价的节点1 i7 v' {" ?/ l  j1 u; I' W  f7 I" o
[set note (note + item j ([credibility]of turtle (i + 1)))
/ Z; T; E7 |1 S0 _5 a- t, |;;*(exp (-(people - 2)))/(people - 2))]
) I5 I* s& o+ Q: \; t9 B
set k (k + 1)
% l* f2 Q- K/ \  e( E]
  e$ x! C( @. F" Aset j (j + 1)
) U# d' ~3 ]; w' L  Q" S], v2 X8 }) I1 d/ B$ `/ L8 o7 S1 m
set note (note *(exp (- (1 / k)))/ k)3 f9 c. Q( a% G- }5 O' e
set credibility-list (replace-item i credibility-list note)
1 z6 m1 ^% e8 Jset i (i + 1)
8 S' N% w* W7 F* [) L) O# A]
7 i$ J& C! d0 [6 Z6 @end$ `3 ?0 y5 y+ _7 _' I! ^  d- u
" `, C0 n" N/ J" [2 ~. ~
to update-global-reputation-list* F- ^( V/ ]' m
let j 00 p. ?) k& M/ w; e* a# {0 d! ~( ?
while[j < people]
$ Q  r. Z7 ]& q. Y[1 r9 R% h/ A4 ]  |5 c
let new 0
0 x5 i# h$ O+ q7 o;;
暂存新的一个全局声誉
5 h+ H, i) V; ^: V: V( llet i 0- Y- h  [2 z; F/ B0 Z1 Y: s. A
let sum-money 0
/ \* j, a" H8 l/ wlet credibility-money 0
, B: {" n* U/ G" p" Gwhile [i < people]
) A& p7 n& Y- B# Y; I$ z[
7 e' h9 A$ c. F; r4 Iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) U0 m' d! Y( ^+ Q* P# h  x; M: E
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' C' p- s4 o& _6 }$ ]
set i (i + 1)
% d1 U' i1 T% X, F]( L* z1 [4 Y) V' \% e! ?- E
let k 06 Y  a6 A4 Y/ D, ?7 V
let new1 0
& f& i7 v) k" P% B; X# h9 ~+ C. gwhile [k < people]4 q8 ?/ F7 c. I. _6 z
[6 G  A" d! m; l
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)
2 s# c* R( T6 v  Rset k (k + 1)
  N' }$ _: G' v1 O8 K7 r/ i]& i- B5 u& o/ R0 ?0 o  j9 G0 U
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 U1 t& z' ?( L: |/ xset global-reputation-list (replace-item j global-reputation-list new)+ s+ k$ b0 d  @) ]4 v& E! i
set j (j + 1)
# R; l$ v3 N. Q) g5 I]
6 I" f- c1 t& O$ a! J# J4 ^8 A0 oend
# r, t5 _2 ~' v! A  j" {7 G  I9 Y( j
) ?# S, \! s3 g" i
  T' O3 F8 i3 r) E+ m2 S4 R! G
to get-color
' Z2 z8 f4 k  j: L/ t
% r! |0 n* k6 p' B# C$ @! C$ Oset color blue

. C; P) z7 z) Lend
% ?  T1 n' ^: C/ u# m& F
9 P4 ]/ n2 |: K! k. z% Sto poll-class( e) C" v1 n- N8 I' q) n& G
end2 w2 ]$ h* F9 j# O+ Y& V' [! p

  L% ?- o4 D9 u0 E& Sto setup-plot17 L. m9 D3 E3 d& V: f
" R1 k, e6 h5 G0 [2 j' J  r
set-current-plot "Trends-of-Local-reputation"

  ]0 }- i2 S* U( F/ `6 q* p# _5 ]+ t! c) Y6 U  W
set-plot-x-range 0 xmax

% }% ^: t* B$ @( h
$ w$ T/ m# y( v7 T2 `set-plot-y-range 0.0 ymax

! n' i5 ~7 ^$ H+ Z6 w2 r2 r. bend
2 p" }% l7 B# A' I! W- V
( c. J/ J, M. k1 Nto setup-plot2" r6 a" M, x$ ?% U

; _+ ]" C9 M' c( r$ m# ~: x5 P, A, Eset-current-plot "Trends-of-global-reputation"
+ S# q' w  a( R# }7 R8 B7 M% N

0 [  s% W# @8 k- R/ w* s3 Q3 }set-plot-x-range 0 xmax

( f( D  m9 @5 P, e' s( }8 N3 @5 [$ U, t7 l
set-plot-y-range 0.0 ymax

9 |; U% M0 h% U. }! f+ Vend$ O1 S( K" {9 B+ n
4 I1 h. \4 F+ L( h
to setup-plot3
/ s+ ^7 H) Q3 l9 i7 N* X$ G  \7 M" {' V. o! A
set-current-plot "Trends-of-credibility"

4 i5 y% j& D- v2 u; [" f: m/ e0 g
/ d# ^  h9 G# y) Dset-plot-x-range 0 xmax

: V8 X4 Z9 C% c+ C" {& S: o! h3 h0 e( [3 U
set-plot-y-range 0.0 ymax

: N+ c# F& ~" B, r8 y2 jend7 s- r8 ^6 Z* B5 W# ~2 g

0 i' n7 f  N$ g6 u" Hto do-plots
( f% h( W6 ~/ t; Tset-current-plot "Trends-of-Local-reputation"- u* m" i* n1 u6 [7 I  m$ `+ S! P
set-current-plot-pen "Honest service"
  g$ [! E& U, _% rend% Y' v( l2 c9 U* f! c+ l, @
! I) Q6 x* u% T0 c! q; ^
[ 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.: b8 {4 g# o- R2 ~

' h- S% N& G2 N5 m; G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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