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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:( B: w: J$ ~9 A! ~6 p/ r
to do-business + ]/ d1 P# n0 _( G1 J: w
rt random 360
8 t; }1 w) Q; [1 h; [' i  v3 s fd 1
/ j6 x; D1 v; p, t) a8 j ifelse(other turtles-here != nobody)[; b$ e0 U; u' L$ ]+ H, W: t: r8 q
   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.
$ e; Z: |2 b: _# ?, g3 v   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . [& {) z; N7 ]3 F2 }" G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& D0 a4 }& H3 c9 X; q) Z
   set [trade-record-one-len] of self length [trade-record-one] of self
) K7 s0 X3 H# G) W, d, h   set trade-record-current( list (timer) (random money-upper-limit))4 q7 c* n! c, K0 B1 f

$ N2 a. z3 C# p* f! F! y7 X问题的提示如下:
* m- `2 n3 y+ z- K! l7 u! E/ `: X8 {6 G$ z$ N/ o  I! O% n+ d3 L" C0 p
error while turtle 50 running OF in procedure DO-BUSINESS
  M0 `; [# r+ z9 Z3 o8 a% n3 J+ k  called by procedure GO
% Q) W; _4 ~9 T& b3 Q) pOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ K* Z) V( O2 ~0 |; }( n3 L
(halted running of go)
! S/ i! _2 N2 ]
: t' H+ w" P! U8 _9 L( u+ V这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~5 q1 _1 t3 q1 R! T3 r. p) j# D+ ?
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5 N7 V  i+ I: Z& E4 q) q, k; b
globals[& y! @- ]( R1 b- Q+ {
xmax
* J# x  @% K- p: C$ S: ]1 }ymax6 a1 W% r. ]  B2 j" d* O' M
global-reputation-list
, m3 a* c' P! x) ]3 a0 a+ U$ d6 _9 o7 b/ X8 Y3 g
;;
每一个turtle的全局声誉都存在此LIST: \' ]9 e8 ]! _9 p3 g5 i& C
credibility-list
4 X/ U, J  a& b' C# X. J;;
每一个turtle的评价可信度
' g$ O0 x. W! z% S6 E  c' ?honest-service0 z+ f" r6 F$ O- `0 z+ {8 @" D6 R
unhonest-service- ~+ ^) D( E7 A9 I
oscillation+ L$ v! H- a% t. A! D" x6 D
rand-dynamic7 c; X8 P: }5 |# A" x2 w( d: s
]
$ q) g0 T% V" O
5 }* q5 ^2 w# v3 D) s* D( J4 u1 u9 a3 {turtles-own[* i# ~3 c% L2 G/ ?9 I' K
trade-record-all( N8 I: k  ^' U7 q5 I
;;a list of lists,
trade-record-one组成2 q6 |  w+ L3 k. t  p5 J
trade-record-one
5 V. j8 q$ \8 D9 H" |8 K- K) S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" D" N7 u; r9 _% u. c

+ P3 A1 ]( j; k4 O7 {, q1 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]]! T0 N7 e: G& g; r  g
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]; ]9 k; n; Z5 K8 a  Z' P: }2 q
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
( r  J. M& U4 C1 D. x8 x/ ]! u# Hneighbor-total+ P7 ~- }, x2 b# t" r
;;
记录该turtle的邻居节点的数目$ u7 u( s% X7 r) `* N% L1 T( j
trade-time
2 f& e& I1 M$ }0 F% p% a) i. [;;
当前发生交易的turtle的交易时间- z$ B- P& y" b6 H( J
appraise-give
2 H- [& B. p$ T;;
当前发生交易时给出的评价
. j& t$ d* ^$ r2 B5 c9 ?appraise-receive
2 `4 j, z3 L, x3 C! ]5 o! f;;
当前发生交易时收到的评价
2 |; m0 B$ I, k* Q/ yappraise-time
" ^- T9 l% H2 W, h5 L9 f; r$ t, q;;
当前发生交易时的评价时间
' e5 t7 E6 A1 B4 _- Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉; x" ?7 r* c+ O6 P7 G3 p) a3 f
trade-times-total
9 A+ L% N6 C' P9 V- ?* v3 j;;
与当前turtle的交易总次数
+ g2 K; Q  a$ T" j( dtrade-money-total0 c) B( \8 }% ~4 p1 ~' D
;;
与当前turtle的交易总金额
6 j# w9 O0 K" Klocal-reputation
: B+ h3 y- i8 w' B* qglobal-reputation; Q* s& U  l% n# B
credibility
$ H4 l9 V6 L* H  T8 _- M;;
评价可信度,每次交易后都需要更新- d, Y4 _$ B5 \$ }/ [0 G7 W
credibility-all$ H7 Z' d8 g' [' X& _; ]! ?! F
;;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
8 ]6 L8 e# H( p
, a# x2 {  C  |) Q7 G; n. Q: k;;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
( h, K3 l+ h2 V8 `0 a. \4 S$ z: qcredibility-one
/ Y2 `. `6 W5 }/ y$ O  j;;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( R$ Z; E; r$ ^: Z8 [- J. u: n8 ]
global-proportion
" Q; S4 a2 M0 h+ S" c1 W' Dcustomer9 ]- ]/ m, e4 a& W6 c1 H
customer-no2 C8 i) `3 R- Q+ H" d
trust-ok
: N6 g/ y: p- K# Ttrade-record-one-len;;trade-record-one的长度. f8 X  [' n( x& T5 C( P3 L, _
]
0 B' C' c0 K) Y7 ~! M/ H% p. K# T. v: X! L! ?* j
;;setup procedure6 p4 ]; X1 H2 P  g+ r( k" u
# x5 K1 V& s  D# q, n
to setup
3 J" s( k' ]9 l; j- V7 t4 i2 j: Z" D, P* A, u* p& m
ca

4 M: U7 V6 i( a- E8 F6 i, O2 L$ `2 D* d* \. K8 u4 \
initialize-settings
7 r3 X3 _, w8 \$ S

# B7 l: i$ H  }$ u+ Ycrt people [setup-turtles]

! N' q0 s+ V! `/ l3 C. k0 r, v# e7 E; R& N. U
reset-timer
9 ^& Z6 b$ g5 F) U1 k* h2 O& d3 @
: _0 _2 `4 Q7 D; M2 ?
poll-class

$ u0 S6 O- ^: _' B. J- b0 m3 {& h6 f! c( e9 o& E( B4 R! S
setup-plots

$ h5 Y4 a. _& ]6 k5 f
: \" v& M; r7 ldo-plots

( P' m) n; ?  J$ a6 w0 H+ e8 nend
/ ~( d5 ?- `& d- _/ G8 `  g
. o( q- Z+ M# xto initialize-settings- F" F. U9 U. f

! W3 B4 A$ K" q. Lset global-reputation-list []
3 E* \- J7 l, X5 x  V7 Q- A# H
6 b, O2 `8 u' N3 `
set credibility-list n-values people [0.5]

& q2 J$ ?2 [) W) x; o; H
: S  c* d7 m/ R8 v7 h7 _set honest-service 0

/ X" x* ^, L2 \! _' U* v6 L, t3 q0 E" H+ k0 p: B
set unhonest-service 0
# X6 q4 h: j2 ]$ R4 M5 i
9 ^: {7 f- E/ u7 x- {5 A1 X" s* V
set oscillation 0
; U+ y: H* X" \6 O0 A4 O  e

/ f" @$ d, \* |8 dset rand-dynamic 0
& y* r9 t8 D: a7 i7 U. g
end* c. s5 Q1 f4 p/ q: D
4 q% m; ~% b/ @8 p1 |
to setup-turtles ) A8 H0 ~& l. z- S
set shape "person"
' T- ?% j8 }" dsetxy random-xcor random-ycor
  z2 d  s* F( u; k, gset trade-record-one []
* p9 u- M0 f3 \- o/ x! i, R) u) Q

& F9 q6 g) i9 j! D. u, E( ?set trade-record-all n-values people [(list (? + 1) 0 0)]
  d1 \$ F, h% B
2 I, n% q0 q# B
set trade-record-current []
0 ^. x! a% A8 Uset credibility-receive []; z# N! C& l6 q: B' u, t% ]( K
set local-reputation 0.59 |* d# g) g8 E# v3 @7 I
set neighbor-total 0: N/ O/ Q" u2 b9 u9 ^# d! j  Q8 L
set trade-times-total 0
2 E, R- o: z* Q- Cset trade-money-total 0
# h5 H  C( N8 \6 uset customer nobody7 E. k" Z$ U# @* n' N- ]/ e
set credibility-all n-values people [creat-credibility]
2 O6 }# ~  ^8 cset credibility n-values people [-1]8 v& P9 Z, X7 w! x% t' d4 j
get-color
( L( M4 n6 l& P: ~

7 E1 K" X5 {6 z2 O4 o( ~end
- {* [! m0 Y& H, t7 X
9 Z4 G0 X& Z5 ~' E1 Z+ \to-report creat-credibility
& q; ~! o) s" A' T7 C2 O+ freport n-values people [0.5]
8 ?7 b6 N) e) E; `8 i0 b7 kend! f$ M/ [, ]4 C+ n
5 t6 v/ x; x# k9 b1 W" z8 J
to setup-plots
, c! ]- y) Y- e1 g
0 e$ |* Z# q" S3 bset xmax 30
- b6 X) q" F' Y" l- w
# x4 t+ Z: p& g8 k! a
set ymax 1.0

6 t( ?" O  x& v6 v; P6 I
7 N, M2 {2 W0 F: I1 S0 Iclear-all-plots
& O  _& B. G9 q% o! w& C: q
/ ^, N' @2 `* \  P: `# _
setup-plot1
. F5 J3 y: a3 _. ]

: k  c/ s8 y2 h( ~: l: l. A( D, Psetup-plot2
& ^" G6 v* v" I7 f4 I+ ^

4 X( D9 v* o8 ^' Z* Z; Zsetup-plot3

+ l: L# m* u6 i* Mend
: L/ ^7 U; Z" b9 Q( W) K
1 A* x2 f* J$ y$ m* [- V! T;;run time procedures
, Q& ?: _- V0 Y# r& X& f) U' z8 g! J- b' F7 E& |! g& d
to go
8 i* Y& I7 K! l7 w6 X9 m( [5 J5 f5 L6 x
ask turtles [do-business]

6 J  A. o1 w2 n0 r' Wend
, r. K6 t3 c* l
5 d6 u" y. S  y4 n9 o. @to do-business   @3 N% q$ t5 g1 h9 o- t, T
. y4 k# E# ~8 X) g* l+ z

8 R3 q( u: N) g0 \6 c4 B9 b* J3 |rt random 360
* x# A: ^6 V$ c& `

4 T3 |; m! Z! {& r: P$ k- Hfd 1

0 j) X' o( W1 O) a* j$ Q/ l& J, G" E2 s1 O/ q/ A$ _2 j9 {$ `
ifelse(other turtles-here != nobody)[

7 e4 v9 e/ F( z% u
5 U% ?% B1 L) K5 I  `6 {, hset customer one-of other turtles-here
' r5 q8 Q0 V' w$ ~2 ~

# w  R) p8 u( A' J) N) Y;; set [customer] of customer myself
( m5 O2 i. X$ A5 f+ J) z
/ l# L7 p7 r0 r0 e- N: B; G
set [trade-record-one] of self item (([who] of customer) - 1). y$ m: I& n8 W9 U4 ?( {
[trade-record-all]of self
2 f# p2 _  t; D, ?;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. o; v% _# r* Q/ d
9 T3 U- W* U4 k& M
set [trade-record-one] of customer item (([who] of self) - 1)
9 }' `% P% z8 C$ J0 D$ `" H+ K; y" E[trade-record-all]of customer
: M5 Z. T# G- K8 f4 B2 N; C& Q
% r" `2 P+ b& l* M5 o6 ]
set [trade-record-one-len] of self length [trade-record-one] of self

( j3 E  z  c) g' O+ U6 [, C+ _" u8 }/ e9 K& O, K' n* F# J7 g
set trade-record-current( list (timer) (random money-upper-limit))

# d8 i9 b0 j* I7 w# G- X
' H! g( h- X1 O$ s6 @! Hask self [do-trust]
5 b# m5 }2 I' H;;
先求ij的信任度
8 ~1 a& J0 ~6 v) {# n1 v9 U# F1 e0 T" U  |
if ([trust-ok] of self)
3 E2 P  `) J& p6 X1 v;;
根据ij的信任度来决定是否与j进行交易[
2 o, m* z! l' Q$ Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 f6 i- W# F5 B! d  @
1 g% z+ g0 S# j, {
[

1 ^4 h  a6 N9 K8 B. O# E* ~! e
  N# ~- N/ t3 i5 x1 D/ W4 @5 Sdo-trade

9 J- X% ?, {7 i
# G, z! F  l  ]9 L* y! ?4 j) g% l8 gupdate-credibility-ijl
0 \1 c1 T: J$ K. q6 q- h

+ ~( O8 |7 e% ?& F3 fupdate-credibility-list, O1 P3 g# Y  D3 |

5 C$ _7 _5 l6 G3 ]+ j+ R
+ T$ c5 |6 J0 ^update-global-reputation-list

/ f* U% C$ Q& O  F2 K8 s  ]' _6 h7 `: e% F6 a) f4 `
poll-class

  _1 ]6 O, x1 J/ D; |- B+ x- {3 i$ d$ U+ T) F# c, A  Z
get-color
* p6 K& Y# f4 c2 R

5 {7 ^1 Y$ x. Y. V4 `% b]]9 i3 v! o8 i# R
  z5 ^4 g0 V9 Q. o2 e
;;
如果所得的信任度满足条件,则进行交易
9 d0 u3 [1 Y" \) q4 o
' ?% o% R: w6 [& X9 \[
9 i5 ~  ]4 j! ]2 E$ L" `( v! f
1 g( a  m2 a( d+ x
rt random 360
) g4 k: W+ {% T& C5 v( }

3 y* m; u+ Y- |( C. F9 e8 [7 U4 lfd 1

' M4 e% g5 @& u! O. \* t
  _/ o+ S, @, v# S) C. l' e! }]
) U: N; y) N0 v7 S) O; x& S$ `

! f6 T, W7 y" B# j" _  W" e; K' cend
( U! ]9 [2 C3 e: C

; `% E4 H" I2 @1 Z! Q, I5 Zto do-trust   T2 K! p6 T  H4 X3 A( T
set trust-ok False5 i& E, C- d7 _2 Y2 N

7 i( ]0 Q. `) ^! {
# j7 \# b0 _8 `" T* G: @
let max-trade-times 0
& s' e) w1 c) j% E" z' x' D. Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 m; u' b  |9 i
let max-trade-money 0
, C5 \7 f- w% O1 y1 Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" z5 e! n8 `9 v( j9 m# l' Z8 o/ 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))! p% |0 u! z' u  D* v% e

7 C1 e, [2 L- d) z. J& Y

! i. n- T% i; Z! k5 f$ cget-global-proportion5 @" V! e4 q7 E; C) g  P6 g' }
let trust-value, x3 z5 P; ]6 c4 i" `/ P2 g
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)

: z# |, [8 x: \$ n5 |- `if(trust-value > trade-trust-value)
5 H2 E' j4 @# h* {" Q5 g1 R! Y- w[set trust-ok true]! C. P! _* A" H
end
2 f* A/ Y9 s# p) a0 S* g6 q1 e6 C% e5 Z8 z) u
to get-global-proportion$ P, n2 y  m2 a2 I4 u* d
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  |. l5 H0 ?. C# P" w: t* U
[set global-proportion 0]
7 B" ~; t3 G" H9 ~[let i 0, s8 S/ O  E1 s' M6 U
let sum-money 0. R" a4 ^1 ~- M7 }5 q7 H; P
while[ i < people]
  l9 [% G9 r  r* w[
1 x( ?% Z7 L+ _4 Y  Pif( length (item i
* f. E# `/ j0 @- q- [6 A[trade-record-all] of customer) > 3 )
! B2 j* }5 c" ^
[
' f  d' k9 o/ K, a+ y" V& X. p% Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 `0 K6 @% G4 N& }* M7 @- v" ^: d
]4 D6 t2 w) N1 r. E% _/ z( S& l
]" p  C4 K) h2 |3 Q0 W( j* V+ c, G
let j 0
( g1 `; @& T" {let note 0) @5 B1 m$ s6 ~7 r% f; ]
while[ j < people]4 Z4 J& T* E8 I' t3 V+ ]
[9 ^: {; l) K+ W7 c! z
if( length (item i
. h: L' `) l; s& v  E8 t[trade-record-all] of customer) > 3 )
; R) S3 t6 `) D  x, C
[
$ I. i# ~3 q% W4 \3 g5 ^: Lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); K. D, {0 U0 H) y6 L
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, x$ p" \7 f  ~$ P2 x[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( e! w* t* L, O( R; c]
" I* f$ h9 z  X1 y, ?% ~4 x]. L0 X) L: N$ f6 U0 @0 S* N
set global-proportion note- j7 \0 s7 r8 O; E) |: P
]1 v  j/ D0 F0 h4 a& ]3 o2 `
end; O8 R$ _  b5 z* _5 @; N% M) K
' o4 m4 j" n4 `; H8 i3 n: j
to do-trade
5 i' |% ?8 E* C, _/ I$ T9 O;;
这个过程实际上是给双方作出评价的过程  E- E* T% t8 e6 C, _4 g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 Q% ?& B1 q1 _% w* @/ j9 U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, L0 h& |6 O) Z4 b- ]1 F5 Uset trade-record-current lput(timer) trade-record-current! K& A3 W* S% d! }1 g1 W" r
;;
评价时间
7 e6 w" w, c) O9 J9 w% x# S, x0 gask myself [  i  Y2 O8 S- }9 |5 E" c( f+ g
update-local-reputation
. o1 }" Z+ C; P; w) K+ y) @set trade-record-current lput([local-reputation] of myself) trade-record-current. o# L" d$ h" ~3 U$ m9 e: {, q
]0 C* H8 g5 U7 n% c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* j0 @7 `6 J" n
;;
将此次交易的记录加入到trade-record-one
8 p) f+ `2 ^; Z' p+ T4 W0 Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ M' c: k' k4 }  j( klet note (item 2 trade-record-current )1 o& A; y' g" i/ d0 u. e
set trade-record-current
8 H4 W" \% [4 I! J# O% Q- r3 T% q( T(replace-item 2 trade-record-current (item 3 trade-record-current))

4 `- t8 ^1 R) x& Eset trade-record-current/ O+ _  n& ^- l4 h# A& n! m+ P
(replace-item 3 trade-record-current note)
6 G8 I$ D' v5 w: }5 ]  K7 J" x( F

2 }8 J6 Q# N& }1 ~& O: Qask customer [( y7 d. w* a) ~* S1 K4 H- A- u
update-local-reputation  Z& e3 h8 E1 y( j, J7 Y2 [" L0 T
set trade-record-current
$ U: W& y; {# q7 M* I/ X/ |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ Z" \9 m7 J' X  q9 n
]
' W5 L6 M: m" i9 O# M- ]& {, H6 c' ?0 [: E" b  _

* a2 X! s) @+ D3 P( f; V/ N0 cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* @0 O: u- t! A" J

' C' r3 g, ^: `' x: W; x/ n+ g, hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& N+ R& B" C" x; D- D: m. Y6 a
;;
将此次交易的记录加入到customertrade-record-all) z6 r" g0 Y! _: F: T
end5 G* Z; |3 Z9 q: \* R5 \: R* a( X

; ^% v7 r% f0 x7 A3 U& x/ Q0 y" `to update-local-reputation* X9 I5 f* G, w! S! r
set [trade-record-one-len] of myself length [trade-record-one] of myself
! W0 N) e5 o2 S( e& D
! K: i4 s& B+ s& c: n$ Z& p
6 x0 V) x7 L7 U9 a4 x3 i;;if [trade-record-one-len] of myself > 3

3 O) D' n6 M. g/ J$ xupdate-neighbor-total
; ]  b& ]( A1 U7 v' _" S7 S;;
更新邻居节点的数目,在此进行
/ `7 p+ h' c9 o7 _let i 3
: d( t1 F% F) r( d# g: x1 Wlet sum-time 0; B1 g' A* [* |3 J+ w/ {
while[i < [trade-record-one-len] of myself]' f# \7 \: Y$ f, c
[$ k0 d" }: H' K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' c/ G2 x1 w$ q7 G
set i# O* ]6 C6 R* w+ d5 z
( i + 1)
& T! d4 y" E( I. t3 z
]
4 _) O( z, O# I/ Flet j 3- y+ K% D7 ^5 L+ A$ T) v5 x9 ^! y
let sum-money 0
; k1 b$ \6 @; Q/ G9 Q: i6 qwhile[j < [trade-record-one-len] of myself]# A0 l/ q2 E, \( O- V+ y8 W
[% e0 ]; t/ ~: M8 c$ u1 B; U
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
4 S" ]8 V$ W* a, u3 Qset j
4 ]: t6 S5 n, q: l) M9 U. C: g& c: @( j + 1)
1 y" C4 W( U! p  _3 Y# A
]! j9 j& U  s- |6 H( l
let k 3$ g: D8 g& r; K( A+ O
let power 0
' d) L& q2 [! Z  N- N1 s0 A/ E; @let local 0
, Q2 Y- ~- Q& x7 o% T" F2 owhile [k <[trade-record-one-len] of myself]
0 o9 i' o" Q9 e! A2 D9 u+ p4 Z" N[
0 I4 E5 U6 r& V5 L0 h: ^# gset 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)
; W; @, s1 [' l" }set k (k + 1)
; T9 Z0 b8 j7 m1 L]
4 w& X% p" B; |- iset [local-reputation] of myself (local)
4 g! K" i9 U0 e: \end9 o! Q( C( S6 Q$ b* o0 A

: G4 U+ j: P8 E% O% {" Z) l) |to update-neighbor-total
! H* d3 p% f( }1 @7 C6 J. ~. u5 ?$ J$ c  u& n. h' R2 f# b. o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 n  a8 r0 Q: b
1 |+ X1 q. Z  F# q
9 a, m& w: z+ L* N/ f
end( T# f' s; n0 K4 Z2 R
  `, D+ @( @+ m0 K+ w2 S5 ]+ A
to update-credibility-ijl
8 W  P: |9 I  |  A
" R  W8 Q' \& Y! N, D2 p* c;;
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 g# O( z5 O& j6 u" V2 u/ ~. tlet l 0
% a/ H+ ^8 Z/ I9 b' X  k0 Zwhile[ l < people ]
9 {! M- W5 G) n! z# x;;
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/ l" v1 j8 G- h7 t/ f) D. B
[, @6 z; h0 K. G
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- h! A6 |) q4 p8 ?- h5 l1 M
if (trade-record-one-j-l-len > 3)
1 p2 I0 A) [% ?& U2 R. M% U3 o8 V[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-one0 E; T( X* [$ o. i' w
let i 3
# `# l/ U. q* V3 olet sum-time 0
! W7 O% ^) M3 D# P4 G: O+ Pwhile[i < trade-record-one-len]6 H1 c; f$ ]7 g% t5 a# h$ C! `. U
[
4 C3 M, U7 t+ k6 L) Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' K5 L9 d1 U- Z# yset i, e- x: L; \2 E& z8 r2 U6 D2 c
( i + 1)
: Y( N, _6 |5 z6 E$ p
]: i0 T# ^& V" V+ A
let credibility-i-j-l 0
" f9 k) [, O5 |( `+ C;;i
评价(jjl的评价)7 \+ o1 s( Q+ V3 b, V8 }* d
let j 3
0 j* q- y8 J0 M2 }( H  ?5 Vlet k 4) F- H3 U6 M5 t2 T( U
while[j < trade-record-one-len]; w& D! C' R. o# U8 B/ k
[  O& k* m+ ^8 ?
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) M" }4 y9 Q! ?  v+ }8 z$ X- T
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)
/ ^' e( B0 ^' ]' _# u4 Z( H+ ?set j' a1 i6 ?% _$ U" j
( j + 1)

" F# f$ ?$ ?7 m% X/ h, A4 m$ r' H]
% D+ U$ i# Q; P* p+ \' q; O, `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 )). ~$ O7 v' a+ w( p' h1 r

5 I: S$ D  L2 H8 u
% U5 x3 l0 q# r8 ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 a' Q9 \5 X$ l+ e9 Q
;;
及时更新il的评价质量的评价
( T2 {1 I2 |$ Z  l2 E& {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ N9 z) o3 t+ @5 O4 D- Z" `
set l (l + 1)6 s8 S) C, w5 o2 S$ H# I1 {/ h! B
]
% P2 H. F( y) ~end2 V: o. u' _* R5 z7 L9 x% d
- ^5 S) }. q8 V* G
to update-credibility-list
+ T+ T/ l8 m+ `) h, [: U0 Klet i 0, J& l- N3 `& }: v; p
while[i < people]
1 p5 n: p+ K2 Q[
# p$ q( B" f+ B; y: N8 q* \let j 0) L9 w0 Q: w" ~, r5 n* W
let note 0
& o) j9 L& y7 Q8 I  \8 D' C/ |  X# jlet k 0
* ?( b7 P/ [* V* H;;
计作出过评价的邻居节点的数目
- L% n2 k  h" i2 }while[j < people]% _, f4 a! D1 n! i
[+ ^- x2 a/ l( ~3 U! U, x
if (item j( [credibility] of turtle (i + 1)) != -1)
6 t7 S$ C5 K# ~0 X2 g;;
判断是否给本turtle的评价质量做出过评价的节点
0 C/ l3 w8 O) d" k* G[set note (note + item j ([credibility]of turtle (i + 1)))0 Y4 h6 s+ ?0 \
;;*(exp (-(people - 2)))/(people - 2))]
0 D8 N7 H) I* l  n6 H3 a
set k (k + 1)
0 q- v0 P) F1 \" k+ c], P7 }4 S8 U0 g& L
set j (j + 1)
# k# q: @" R/ m( i]
: U$ }: j8 G: X% E8 B! J. x' _7 ^set note (note *(exp (- (1 / k)))/ k)6 m: f( f8 O% |/ {0 @' x
set credibility-list (replace-item i credibility-list note)
# \# \. [4 y* e' v: G5 h1 M6 E- gset i (i + 1)" B9 P5 W+ d+ S
]( B" J8 T% m. ~
end
7 o* @1 \% P: h% @1 @: p8 H$ T6 O7 _+ \( H# t* y& h
to update-global-reputation-list
) E. j$ q; n1 Z% C" W# rlet j 0& }# w$ a# v+ F6 ~4 v
while[j < people]
  @  b. s; ~) [[. `7 b* |5 v# I
let new 0$ |. I! X7 K5 R; P% w
;;
暂存新的一个全局声誉
2 ^6 e) T8 r' }# S/ q, Mlet i 0' p+ ~! i  s5 o
let sum-money 0/ C+ S1 z8 V3 w
let credibility-money 0
7 `. L, c1 }; q% f; Xwhile [i < people]
6 u: F' B0 x0 {/ B+ ~; b& [' K1 ]% H[
  u/ ^& B) q2 d+ M. cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" |2 e6 J1 ~8 ?/ v4 _2 }
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: F9 T' H! x: w. _% yset i (i + 1)
1 w& r+ I& G" Q1 Z9 O# M]6 W) c. z3 P5 e* r3 \
let k 00 `9 \$ S5 I2 ]) P9 V
let new1 04 ?. \# w5 e& f! Q
while [k < people]4 i% v- K2 B7 `  W! K* Z
[
, n' O$ [4 ]: z- E) H$ lset 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). k0 d& F4 O, Q( o" K" ?& T  ~. E
set k (k + 1)6 ~2 b* B9 _. C+ K( n
]
0 K. Q* ]/ w+ N% e% C1 a7 b1 vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + G* d# Y& p" w1 ]: C8 D' G" ~) \/ k
set global-reputation-list (replace-item j global-reputation-list new)! g4 l/ u7 |( }6 k; ^3 O
set j (j + 1)
# g- C' z2 q/ m, X6 Q+ x]
5 U4 G" ]0 P5 @5 ?+ c, Send
  c, H& o& h4 L
4 @% s  ~# l+ w7 c; v% B) x0 a- g3 ?9 a) C- m: @

6 z) `3 b- {) w. b9 _, Z+ Bto get-color/ |8 m$ ?. a- e) P$ i$ r
; y% }/ d! ]& ]6 d0 L2 H  c, E/ G9 W
set color blue

3 |6 ]5 J. h$ `, Z1 h8 T3 dend
8 I+ @/ H# S4 R0 |# ^
/ B3 }5 M/ J( P7 z0 Tto poll-class- K& C* c% X' O- `7 j% F
end
4 _0 _) x/ ~7 g9 X& N/ d. w  c$ H4 T- j( g. }  K
to setup-plot1
$ W& o* U/ F& O: z$ V8 M/ q: W
6 L: M  e5 c# L2 E$ Bset-current-plot "Trends-of-Local-reputation"

6 p3 T* A* _, N2 f8 ~( }4 O, U3 [! A0 o* Y3 r7 r$ p
set-plot-x-range 0 xmax

$ _% ]9 b# \' S* D
: h4 ^0 T" X- g, B; gset-plot-y-range 0.0 ymax
0 Q; k( t$ I) o$ Y# i1 R. @
end
( N/ Z0 O) b7 e' B, I! h
& m/ A( V1 \! g' dto setup-plot2" D/ D: ^! Y+ W. Y+ Y3 }- z3 O
0 v: [0 V/ \6 ?/ I7 U# \
set-current-plot "Trends-of-global-reputation"

' |7 ]3 i, u- P" N6 t; W. _5 p! E! E/ ?3 i- G* s
set-plot-x-range 0 xmax
. i* z( t' J! C8 l" M/ y

- h( \! g2 K9 h) U4 X0 wset-plot-y-range 0.0 ymax
: x$ `5 f4 y/ A' D) n4 G
end
/ ~" K" X$ l; }, E' X7 c0 o
1 Z2 A( N/ ?9 M; u: _" uto setup-plot3
) d1 Y! |6 K9 w5 _* F3 w" n5 N+ r+ l& U* ^* I5 B0 ]
set-current-plot "Trends-of-credibility"
8 R. ?4 ^- n1 L4 }6 D6 K
, g; K8 v, x5 ]; B
set-plot-x-range 0 xmax

! c( w7 i6 }0 a7 C. w; ]' Z  L" T5 e  y* X- y
set-plot-y-range 0.0 ymax
% _5 r1 y& l3 X- d
end
! h! D& ]# B# N  O) H
+ k, M4 t- V- Q2 Z7 gto do-plots
* d$ T: m/ o: S7 b' cset-current-plot "Trends-of-Local-reputation"
' r# n) h; u- U/ @/ b' Xset-current-plot-pen "Honest service"/ K5 w% m$ S9 g( N
end  L1 u/ D- y" j( d: X" Y0 r
1 _1 }' {2 C6 W( J. e- O
[ 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.
3 V! l3 @+ p" ^0 q/ C& y
4 k1 ^. V2 E8 ~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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