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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:
! k# N5 I& J, [/ e* B( h9 U. \to do-business 3 v4 U; [4 j3 X* l" f: D
rt random 360
: x" k9 x4 R4 P fd 1
" j7 h" M! O0 w! T ifelse(other turtles-here != nobody)[) W! k) E& f- a& [* x
   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.3 V( J8 G. e( F. S- u8 x& \
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 g7 C; B- R$ ^& z/ S, l3 |& v& S
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ O1 v& F2 V  @! x4 q   set [trade-record-one-len] of self length [trade-record-one] of self
  T" d! r* Q" J8 z   set trade-record-current( list (timer) (random money-upper-limit))
5 a3 d( p6 a5 X5 ^* s: u: p6 ]8 B" r2 `% x% J* z$ ?; v& _/ l
问题的提示如下:
" e- W" L1 Z) l( t# q8 X- N7 d- L. ~/ A& ^4 V
error while turtle 50 running OF in procedure DO-BUSINESS
& X+ H' `8 b, b# ]$ g  H9 ~" ~  called by procedure GO
: M$ b# S5 ?, q/ G1 c! [; d) POF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 N& R7 T; ?% v& ?
(halted running of go)2 I$ ~, \4 T( a8 k6 Z* u: ~$ O! W; i; n
" {0 ?6 ^& ~5 Q+ a$ w
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~~+ z  |& f( z/ y0 Q
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
' I) D. R& Z) Iglobals[
/ w) v$ K/ m9 ~- Qxmax5 i" }# V' _' |9 c* c
ymax$ c! c! ]8 L1 [% A: k  F9 F
global-reputation-list
% b" M; F4 v- J! }9 P0 C' G- z% v
! y! S6 x* H4 Y2 N' V+ D+ X/ h0 S;;
每一个turtle的全局声誉都存在此LIST
. D$ A: ]( c7 c' a; d, Ucredibility-list
+ U0 e% G9 x! r( g, g6 O0 f;;
每一个turtle的评价可信度
2 G3 {3 V: x+ X0 Y* b# Bhonest-service2 L0 \4 b4 v6 V: a, d* y' j
unhonest-service
' q0 c; e' p% H4 M3 |: m3 L2 I( ~* foscillation
5 {9 G$ d7 f' ?6 P0 e+ Srand-dynamic
# v# \6 q$ b) c]. ]9 m+ H# e5 @

! F" `% P4 ?: t6 ], }0 A; Wturtles-own[
3 i' Z- ?7 F/ x$ W7 P5 N0 T' I' e  Mtrade-record-all4 D3 Y7 \, h. `) D, P" F
;;a list of lists,
trade-record-one组成# K  V$ Q& r1 d3 r9 V/ O$ M" C& \
trade-record-one
* r: z& z; u9 D) F7 _6 w- |;;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' F" i6 E6 H) {9 H4 J* u0 G" n8 U
& `0 X* _8 @% @" n' 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]]* i2 ?5 t3 r2 r+ |: b0 y
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]
- _2 U( |2 u$ h) s% `* l5 ucredibility-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' X: i- o6 Z; r2 U- |
neighbor-total
. Y0 k/ i7 O0 Q! x;;
记录该turtle的邻居节点的数目
. V8 W- p' p& etrade-time( T$ h% P; G( U+ \9 B
;;
当前发生交易的turtle的交易时间
& q" F; b+ v0 Pappraise-give
# X6 c0 L0 h5 x+ |1 N; ^# q( Y. m;;
当前发生交易时给出的评价
# W; j" {1 U: w& S# xappraise-receive
  |4 S) ~* }; l7 {! L% Y;;
当前发生交易时收到的评价) l8 R; V, r. V. n0 s& o$ |% k6 l
appraise-time
/ N' k3 c4 q- [; c0 y- V: |/ x; u# `;;
当前发生交易时的评价时间, q3 x1 Y1 ]- m9 \; g. I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; T( g" a* o2 q5 xtrade-times-total
( E1 V, |  [$ Y0 m;;
与当前turtle的交易总次数% N+ Q+ e" `8 c
trade-money-total6 A6 E2 r( E7 Q* ]7 d( ?6 X
;;
与当前turtle的交易总金额0 D* ?. }+ x/ V$ z3 c8 r
local-reputation# {/ f6 [  k; j0 d  k5 w
global-reputation
' h" q( q3 x8 Z. O. Y' U5 g  Ncredibility$ X/ `  B4 q# J' G9 O2 k
;;
评价可信度,每次交易后都需要更新" j8 \- _( Y# m: o+ p
credibility-all( C2 u5 J$ Z1 @, J
;;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: v" |# E7 c' g, }. R5 t

% J1 Y! [& @3 x. Y* M' V- N5 D: p;;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
# {/ j( l& q0 l4 X2 i5 Z- Wcredibility-one) R0 F& `9 F# r* ~" N
;;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; g. [( }+ U' ]6 u4 k& c# |% H3 a( X  X
global-proportion( l" l3 `+ r# c. Q" ~
customer+ q0 I* d7 @7 `2 ?% ?5 ^  R! K
customer-no
, K) o! U2 A! I8 G6 U( N! |9 D9 y8 Utrust-ok
1 J( S& m8 P% o- |" f3 _trade-record-one-len;;trade-record-one的长度! G% i# T* }" b
]6 N5 }( b& j* b6 H! v1 O- I! e

6 g% B: F, p  T5 U;;setup procedure
$ @1 w+ A+ d. P8 M8 d( D1 x  l$ @0 y& }) Z# y; L
to setup7 e" O  b; O; I) N# n5 m- Y
1 y# E0 h) ]1 y
ca
* _! v# |: ?8 j9 U
/ k5 P- {0 i$ g5 {; ^1 l8 d6 m
initialize-settings

8 k& r# r& t1 A
' [& h/ T( f) a" u+ ]crt people [setup-turtles]

0 J% [/ u8 G9 `! m; v" {
) s( \4 e* L. m+ X5 kreset-timer
2 M( M* g) b6 q9 v5 O
$ ]1 `- j6 K' o& Q" ~
poll-class

/ u$ m3 ~" S9 ]* p2 G0 k# [% ?
  ^- Y* `6 A! G& asetup-plots
* n6 X1 W! @2 s3 K
6 W+ U. Q5 [4 a' {" W4 W+ b
do-plots

+ @( ?" W$ |4 f( I) K) @8 f+ Xend, _7 c4 t& j& B& z% T8 ^6 ^
: C6 n+ M( _2 Z' M# r+ L
to initialize-settings
4 z) n9 X, z7 o$ b+ L. R# e! R
+ L0 a- R9 ]/ y8 u. tset global-reputation-list []
8 s( Q  [/ n6 }
/ ?1 @! d% B% b: \3 |7 \6 B1 P
set credibility-list n-values people [0.5]
1 m- E# y# L! E# A. s5 T) U

) _! \% o& \/ T$ K+ j9 ]set honest-service 0
/ X: i7 M% K" R$ P' T

7 I% u* w$ l6 Wset unhonest-service 0
/ Z) {) s% ~# y( o2 s2 l

- n4 N7 w' N* G  ^$ Eset oscillation 0
( S" H# i4 S1 S: B2 D/ k4 `, O
6 O! s& t' q' j5 v# y
set rand-dynamic 0
1 V2 \6 v1 N" o- N& J. ]6 E9 G& v
end
0 o# D1 r1 i; U
/ d* w; c  h1 m' A# Y: V; r: Yto setup-turtles
& c( _- b% K9 x6 lset shape "person"
/ y* {+ M- n  [* }1 isetxy random-xcor random-ycor6 t0 Y9 d, |6 S9 {7 A, r4 @  w
set trade-record-one []3 j9 J6 r% ~* R+ K

0 G6 }4 [, E: j7 s4 xset trade-record-all n-values people [(list (? + 1) 0 0)] # M- U0 d/ B6 _5 b
& S: |4 @+ c0 W  a8 H9 w, G& B" A: v  M
set trade-record-current []9 D/ f( s* I2 w$ s7 ~5 y
set credibility-receive []
0 O; \) n- K% R- ?4 ^; hset local-reputation 0.52 O1 H' O; ?3 E4 e2 u
set neighbor-total 0
8 j7 x3 p" @, ~! Q! e/ Eset trade-times-total 0! K/ d) J% p# w6 ?* ]8 B
set trade-money-total 0- n& n$ u: n+ g6 e
set customer nobody
1 H- U& g: G# K+ uset credibility-all n-values people [creat-credibility]8 ^$ S7 P' Y$ Y, `  R
set credibility n-values people [-1]
" m% C9 }) g% v. Kget-color
2 w, Z& W+ q( r2 b  d/ e' Z& r

" M$ D7 f/ i0 ]# @end
$ J* K5 ?, m% p* @. ]. ]% a" W- N# `$ O& {" u$ z; L- y& D3 a
to-report creat-credibility
& f3 V0 y# z" I7 _report n-values people [0.5]7 T# ]* S- w6 k5 i1 {
end
# V( T. R4 H0 e0 d8 i1 n- T+ e. z/ A7 i8 s4 T3 h
to setup-plots$ N. P" I+ O& \. H

3 X+ D' p/ m4 M3 b3 D* S5 Hset xmax 30

& g6 a! J; M8 G. e* R+ }$ G- S4 w5 b2 d2 `# {; t
set ymax 1.0

# ?; C7 ^+ m/ ~. M% t/ ~0 A2 b* A+ z3 G+ t$ i7 Q* I3 C
clear-all-plots

1 Z" d6 n6 g/ p- f$ T; X1 |: O3 t/ g: c; O' `
setup-plot1
2 l/ L- M: e# n+ I) u# F) C  Y

. u. ?6 n) u4 M- qsetup-plot2

6 u: i: n4 O% J6 q
0 [* T2 g8 w! D) Wsetup-plot3
$ l7 O$ d4 ~1 @9 u+ X4 i+ F
end4 o% Z8 N! C& I/ N1 u- c- \

4 f, c- W! n& F;;run time procedures
2 E! z! f5 y1 ], M4 R* V! h: a. O2 ?
2 s  S+ d6 u) b7 D2 z7 Hto go2 o8 o9 O; n) H' N

7 f- B. O1 O3 F) P/ T* jask turtles [do-business]
6 W+ l" ~. w. p, k  A# R
end) K+ P9 {  a  X5 W8 ]

& Z) I3 b0 t( j; S' o( J* k' G! ito do-business
* t) x9 e( x' p0 p
6 j9 v. l9 a% d+ U

6 M( W* @" Z6 [4 k0 f" S/ E! B4 W! F  m' xrt random 360

& e1 c% M/ p: {. H2 i( V2 h, n
fd 1

# O7 x3 r  d4 @8 ~* n9 p( @7 u% W7 X- p2 r. s9 ?$ K+ y
ifelse(other turtles-here != nobody)[
9 S% Y1 ^- K. C, E% l6 w3 e# c
6 s0 B, L$ ^; `; s
set customer one-of other turtles-here

! B8 p6 D- {7 U( ~3 P8 p# S2 q# p* x2 M
+ N2 D- ~. }0 g- B;; set [customer] of customer myself
3 f" @4 {$ H4 h4 w

. a& K& N: \3 Jset [trade-record-one] of self item (([who] of customer) - 1)
/ b6 [" C; I( v$ D[trade-record-all]of self
+ `3 C9 @/ D- D3 J( Q1 y: N2 u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, N7 C1 D" q/ e
3 ~9 I3 |. @1 Q9 iset [trade-record-one] of customer item (([who] of self) - 1), _. z$ r! H+ v9 X
[trade-record-all]of customer

3 H3 P& m# L3 Z9 J
- C* s& d+ Q. J; o7 ?$ ?set [trade-record-one-len] of self length [trade-record-one] of self
& ?  W$ H: g; n! a3 \

$ S5 l4 Z% S9 D& ~& gset trade-record-current( list (timer) (random money-upper-limit))

3 k+ @# [* c1 j" B7 W8 G4 Y
; `0 t2 J) x1 J* k3 C7 e: E4 R. fask self [do-trust]3 }9 X% J# _" r
;;
先求ij的信任度
+ P% [/ I" ~2 V, p& N- P% h& z! [6 T* \3 q' L0 z5 P
if ([trust-ok] of self)
3 E- a  l. V( K# E% S, ^$ v% k- X  y;;
根据ij的信任度来决定是否与j进行交易[
  u* ?# |8 ]+ P! w8 L. Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. _4 y. D9 e, s1 R7 d2 B0 I5 q5 g

) y, H% E6 C- N0 ^; R[
) s. v& Q3 d. C' L; o$ l' m

2 ]$ _, [  X/ Z6 H, Ydo-trade

4 k$ E, z. G$ Y: W& N0 |3 j, m0 F. L* j/ Q( V
update-credibility-ijl

! M+ G+ Z5 S' U: d. M* X8 N
' c! o$ {3 s# |2 wupdate-credibility-list2 E+ c1 i6 h6 s) b" v: Z7 Q
, B0 v; D, j) o7 N0 G) n* D
  h. H0 a2 l; t* T2 z" i. P* p
update-global-reputation-list
9 _) L! K0 ^; E" N5 T
1 o2 Z' P1 R0 \$ ~' B4 l5 y
poll-class

- G$ |. T' N- Y; }2 H( K& M1 X8 S- P
8 l* q! F. M/ Mget-color
1 j7 N' W( d' Z. Q
+ V3 C+ }, T" f6 G
]]' K7 h* G2 _1 o! {% X% \: U

. b, K8 J5 f/ T: S7 @$ S;;
如果所得的信任度满足条件,则进行交易
3 L% j! O, Q; N) W: L3 i' p
3 u) [  U5 c/ E3 q6 H  V+ C& x. p[
, R1 X. Y5 |3 z& V1 m* D  t

1 o; v- q9 ]5 B7 @8 l% \" frt random 360

# O2 f; `- z0 `5 N& ?
( b5 w# N, K1 P* n- tfd 1

) R- O1 M7 w: q/ K, ?. A
' I) B6 ]$ Z" h  _" D7 @]
$ {9 @& G" a+ r5 ^5 H
' d" P$ {, I5 G
end

% i2 e; ^3 q9 _; U, Y5 j: w9 n& A% C3 E
to do-trust " `1 B4 ^4 R- x! u* L
set trust-ok False/ u9 C* Y& N9 g. P  U# b

$ ^* g7 r! A$ v* t& [8 @

* ?7 k  c" v5 R" S2 U1 u: Llet max-trade-times 0
  A4 U! Y* j/ w! b. a" t$ D7 kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 s; C6 R. L' Z0 D  D7 N6 v
let max-trade-money 0
2 o! k: W' s# b" m1 g- p! kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 u; A! w/ X6 K. {6 G# u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 N! J# f- e3 C
  n. B( ^3 Y! V
# z8 ?5 ?. l! J
get-global-proportion
3 Q1 G0 ^5 c1 M" ~# ilet trust-value1 z9 v/ ?- o! U$ \" v) R2 c
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& P/ P$ j; K- }if(trust-value > trade-trust-value)! U8 u) l+ w3 @: @2 M% X) {
[set trust-ok true]
0 Q1 Y  ~5 d) O1 ]0 [% kend1 L& }) h$ n4 i  _& R

1 Q9 M/ T+ X- w' ]1 O# m9 nto get-global-proportion/ k& I& H- S" a4 `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ ?: X9 ?/ Q( S9 r
[set global-proportion 0]
) u- T2 B; t5 i: N6 o0 e[let i 0) }/ u  i4 n- ?- d
let sum-money 0% u) }* @# O7 f2 {: d2 a. E6 z
while[ i < people]
' e3 ?6 B6 n8 `/ {% j! y  D% D: k[
- q7 T* K% M$ xif( length (item i
& a! n. g( n7 ]. o1 {4 @[trade-record-all] of customer) > 3 )
5 B( m6 L/ f' d: i
[
7 P) C# j7 X9 m  U3 T3 E) C3 Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 P8 v; c7 O* {) s; T9 p3 M, B]
# p+ `4 _* v6 [% z6 G]! ^( u+ Z0 [3 A! n3 d
let j 0
+ p) ]9 V3 s2 p! y: g/ T2 V% zlet note 0/ y6 x7 i" i9 u9 B# y/ m6 q
while[ j < people]; X! m/ r( c$ H; P+ t/ j/ `$ |
[6 z1 c9 {, ~" m# z, `# H0 j7 S6 g
if( length (item i
  C) w) b; h" F4 v5 z[trade-record-all] of customer) > 3 )
  K- q& q% \8 j4 V9 c% M
[
. o- g  B3 w8 o; D- e0 R& P! h( x2 gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 u9 g/ C, m& M% x/ J( L9 `2 @+ M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 `0 w# ?$ S4 B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" g4 H* b+ J3 P/ I: ~* g]# D2 ]6 L( d0 J% `# p2 ]
]
9 U6 p( q3 \+ E% k8 C7 s' ?set global-proportion note
" n! K2 _$ V8 t! g" W4 M]3 Z: g( k' P, s0 e; S0 o1 i: a+ D
end
# o  ~# |5 A; \6 e8 Q0 Q8 Y/ T5 i2 _9 D1 Q! E" L! T
to do-trade
, {5 i, C, {1 e$ k  \;;
这个过程实际上是给双方作出评价的过程" j4 R& ?$ X5 z) b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 w( W0 A1 J2 `- c1 p+ \6 H8 T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 O  @" S2 d9 `0 e% \9 C: K
set trade-record-current lput(timer) trade-record-current7 h( L: ]- C) n3 V. E' W& ~) T
;;
评价时间% A; [/ ^; [% X8 Y
ask myself [
" V( D+ X; D. V% ~* z4 ?3 lupdate-local-reputation/ Y* K; B) b$ x
set trade-record-current lput([local-reputation] of myself) trade-record-current. }1 D" V# Y) L. v) P7 F
]
4 {$ F" h* g8 D$ b7 ]/ e( S+ U! M( Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 Q7 w5 z- G& B( B5 X
;;
将此次交易的记录加入到trade-record-one
# P3 T' w3 z. x1 I& j/ Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* A; `! L% G' e' Dlet note (item 2 trade-record-current )
+ l4 V, x" }) T8 y/ Q6 bset trade-record-current3 I2 f! O& D: r
(replace-item 2 trade-record-current (item 3 trade-record-current))

& c) _5 z! P3 H2 a: i/ a: C6 c5 lset trade-record-current
4 B3 I% B* ~" }% c* P% z(replace-item 3 trade-record-current note)
5 J) P* T1 n3 X1 j; n
6 T' d4 E& O; O# |0 P7 O( f
3 o/ M- R# h1 a* }
ask customer [
) T' u1 f1 `. v. qupdate-local-reputation0 j) @9 Z0 ^" l6 t9 P
set trade-record-current
0 Y1 v. v' X3 H- P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 d; x5 v6 G. w]
/ F  a* V8 U+ k! J
' U0 n  ^" [; G9 M1 y
1 Y) k3 @( k% |2 V) F. ]/ E+ j
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 @+ q4 c9 X" u6 u: M

! C  s$ R% v4 A+ L5 Y3 zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 R3 H+ t. T- @9 K
;;
将此次交易的记录加入到customertrade-record-all
% |5 d0 Q8 {' n. X" N0 q* k) V1 Lend
8 j- Q: `& p0 H6 g& L, [1 [# N' s/ |! j- W7 q
to update-local-reputation3 @3 K$ G, k8 |& t
set [trade-record-one-len] of myself length [trade-record-one] of myself7 t$ h. Y9 H0 @$ z: L

8 s! K: l  W5 d! v: N$ x8 W+ F' y* w: z
;;if [trade-record-one-len] of myself > 3
: W8 q4 l- X+ ]5 \' R3 ^
update-neighbor-total' p9 h1 n3 G. d5 m3 U  Z, I  m5 C( Y9 G
;;
更新邻居节点的数目,在此进行7 ^& {8 `9 t# x, o! `
let i 3& x9 L6 r) B3 p, X5 o. O) I
let sum-time 0
! ^1 k9 v4 I) V! b" X; Lwhile[i < [trade-record-one-len] of myself]# V6 K; E' U1 C
[
! g4 |4 g9 J2 w: ~* Y( Pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  J- I- W; v+ u  v  E
set i' B: f+ U3 w# R
( i + 1)
2 Z8 S, Q* I0 ~( `
]
$ V1 J: a5 I- F& U$ L, Flet j 3" c: U# t& s0 b% I
let sum-money 0' n8 a# d2 D! e- x* h2 [' ?
while[j < [trade-record-one-len] of myself]
% k/ |! W) Y# i  I1 p# V9 F[
6 G" J9 Q5 o( b7 O. @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 @6 J3 A! a1 t" Q0 U
set j
# M2 u; o- s7 E8 h  {8 a0 f( j + 1)

/ o6 n6 e6 w- r1 a0 f]
$ Z  ?+ p1 q1 }( R3 Blet k 37 U& X: _, _: m. c) u8 A
let power 0
% S; l0 @$ A( a' P) C' ^# r4 }let local 0
% u6 S; }; g( \1 vwhile [k <[trade-record-one-len] of myself]6 |% ~, y4 r4 H  Y3 a3 A$ F
[
5 M9 N( I% b+ {6 D) J3 P0 P8 pset 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)
2 V8 ]$ K3 G6 M9 W# Rset k (k + 1)
5 Z+ y* g- H1 k! r  }  h/ K2 l]
# }! E& b7 E& a( Z3 ]# J# u2 rset [local-reputation] of myself (local)
6 F, x2 m5 j8 M1 _9 z( j( }1 P/ Pend! k+ g3 I6 S; \. y, }, X8 b- [6 L6 ~
$ N$ ]/ L7 i2 _
to update-neighbor-total& K7 ?8 q. ?5 f9 b2 y
$ c  C3 ]$ G* U* }) ]! m; F$ c, e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. L! }+ ~, V4 k8 M3 ?
% C2 ~2 V! T5 v1 H$ z: D

- ^% y9 G+ X+ [end/ a# D& v8 k2 A4 I

+ h: D4 Y0 |1 M& Y& h' pto update-credibility-ijl
; H5 H. U/ M) o4 r. u/ X; X) }
! ?, f3 \+ Q. I2 g5 Y0 t;;
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。* ^( s. m3 ]3 y+ `: R' a+ j/ R
let l 05 Q* x. a6 e; N1 V& a
while[ l < people ]
: D8 [7 p4 \: n; U9 \. `;;
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8 T) m# x" l1 ?1 z/ q
[2 K* J  F8 C+ T9 ~, Q, m4 B: c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 M0 f6 a0 z$ `1 i4 g6 z. m0 \if (trade-record-one-j-l-len > 3)
8 {" z0 [: a: E' O* M8 D2 r' ^9 B[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& a7 s. E9 ~" [" m, i8 M/ |
let i 3
- c$ ~5 q' Q& }5 \2 F! s6 flet sum-time 0
& M/ [' D. P! M5 U8 s" M# I4 \while[i < trade-record-one-len]
3 k: b! H' m7 d1 s' V& L3 B[
: L7 ^# d! k& `5 p. L1 m' ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 k% R0 X9 c5 mset i( \% n$ B2 k5 a0 |6 _
( i + 1)
+ W  `- p5 [; t4 c* |1 m
]6 z3 F/ v. M  ]- C1 v; {6 E9 N) f7 A
let credibility-i-j-l 01 _9 ]  F5 A$ J# h4 z, F
;;i
评价(jjl的评价)
2 a  ]5 i6 @. S: Elet j 3
/ n5 t1 J7 c- w( Q9 L7 Flet k 4' t5 s9 s  e( i
while[j < trade-record-one-len]
$ l0 T$ D6 @: B% O' j, R# r0 R1 s[. G. q1 ?+ S( q$ A2 h
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
/ N( F% t2 T+ U2 X" }- Yset 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)
6 @  R* f! ~9 P* Y- |5 O4 Aset j
2 C+ A  }9 O: r: u( j + 1)

/ \$ j8 Y+ s' w+ n7 O]
7 _, @3 Z/ q) Eset [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 ))
5 W8 f8 C8 T6 H/ |
5 R4 m- x/ ^% n" `, \; Z

7 c0 ^" \$ u% h7 [* F# _0 ]" flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) q. y! L6 Q) l' \3 y( K
;;
及时更新il的评价质量的评价  x% G1 R& ~8 F; k# \: C4 ?5 V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ f1 W9 Z- B( E# vset l (l + 1)  @& G9 }( Y; Z; R) r! Y7 y
]- E9 e0 I3 J+ p/ b7 G* l
end4 M& X; [! ]: \6 L8 F7 K
  _1 \+ }" ^6 q! F
to update-credibility-list- t: \5 X, r5 m: I+ N; O
let i 0
3 G3 y0 H5 V# g8 F4 h: ?while[i < people]+ @" Y( x6 x8 q$ ?# t5 @2 {
[
- c& F3 c/ j' o$ C6 }# M( Olet j 0
- Y# z! D; x. Alet note 0
% B, N1 m, e, ^3 ~6 f' alet k 0
' e2 E' Q1 `: R) N;;
计作出过评价的邻居节点的数目
& M! {' p3 `2 q5 w7 Kwhile[j < people]
: X: t+ \/ r8 h3 D5 ^! c7 i[
; F' v' h; ]  ^$ ?if (item j( [credibility] of turtle (i + 1)) != -1)
7 Q1 C2 h% A6 j, f7 O! j. J1 W- F;;
判断是否给本turtle的评价质量做出过评价的节点
" }: G2 |8 G8 p/ `[set note (note + item j ([credibility]of turtle (i + 1))): i& H  g) f' G) t5 _
;;*(exp (-(people - 2)))/(people - 2))]
8 B* [) C4 ^: R8 r2 `
set k (k + 1)
/ a+ Z6 i: Q2 D1 T]. E1 y# o0 T/ y0 V+ C8 N6 z" X; J
set j (j + 1)
- \4 Z+ c2 `$ Q! J5 |* F3 B9 d$ l  g]
* N, l2 f$ E- y4 G7 U; rset note (note *(exp (- (1 / k)))/ k)
3 d, b. Q; G% \$ iset credibility-list (replace-item i credibility-list note)
  {8 |  Z9 J/ l2 I" R. e  @( Iset i (i + 1)+ O3 f1 w& b: T2 H% _
]
4 H9 U% y4 ~9 m$ p4 P) ]+ U9 x/ lend
+ @  `/ I+ `0 u# d1 x( ^$ ]0 E% {
to update-global-reputation-list* b# u4 B7 t6 n3 \9 g- @
let j 06 o$ e7 j% E1 u8 E: O
while[j < people]
5 \. n+ X9 r% q1 _/ n* s: S' Q[7 z- b  u1 K4 l, T& i
let new 04 ~/ Z% D' Q! C5 l, }! ^* B8 U; L
;;
暂存新的一个全局声誉4 g4 }8 L! D+ n. k1 c# p& e8 _
let i 0
) V5 j7 U7 a2 a4 T; R6 Klet sum-money 0) M, |* g! \6 @% D$ [+ Y
let credibility-money 0
; H/ p0 c( l* z9 d& Hwhile [i < people]
! d6 I5 J2 e: D1 q* q4 x0 z2 O5 c[
: n. p# x. L3 v" d8 yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), i: }! c8 @2 l0 F8 f' g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, P+ R$ M7 }* K/ K9 vset i (i + 1)9 |$ u( _3 k; ]# e
]( f$ S2 j& {0 r2 m  V: V. z5 j6 V
let k 02 u' O& j+ x; C5 j1 w3 R: |
let new1 0" J% S$ b' R& p& ]5 g" G9 e. p
while [k < people]
, Y" x; B9 K, Q" D[
4 T, u) U& \. M9 C( c6 A# C: t& G5 xset 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)" \8 S6 n/ l, q  c
set k (k + 1)
* D* s. ?) \1 g! J8 |% Z5 []
( g; ]% Y# K6 K* C  @set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 u' D  G  ^$ o2 O1 Cset global-reputation-list (replace-item j global-reputation-list new). t- O0 o( |) j' z9 x: b; c) Z
set j (j + 1)4 R6 a* s% q& Z
]
' B; I5 o, `5 P* Lend: `  J, i3 z/ p: }/ k
) C8 s* E3 a; }& i# l0 Z" E

& z& T4 g7 `% P& B* D, m$ q# g
* X( q3 b" d, N: m3 \; V$ Z" Tto get-color, \% [/ [+ \4 k2 x
' B' [4 l9 N$ T0 ?3 @
set color blue
$ r; g8 W4 c# J5 N
end) a2 U) @" x7 _, a
6 _' i: w" [, P
to poll-class
$ C$ |& H% f- u. U, b" V" q3 n: R0 K# zend
& U9 i) K5 x# A# n; l) l/ f+ v0 u) L" X2 z
to setup-plot1
+ I" Q) ~. i" [* R& ?6 [* n. L. \1 K0 |
set-current-plot "Trends-of-Local-reputation"

! L; A& q" X7 i6 I( Q
$ G+ ~$ v) I; Xset-plot-x-range 0 xmax

8 b' ?. w! r9 T  {% t- ?, e) u
1 ?: P7 R, v, }& w) f, c4 qset-plot-y-range 0.0 ymax
8 M0 o3 Y3 Y+ k4 x# I% K2 F
end
; D9 H6 Y' b  Y! t( e' H5 U- m- z' y0 e% [* n/ y! F
to setup-plot26 F- C" k9 }6 j
8 A: C4 i9 B& G+ D, J
set-current-plot "Trends-of-global-reputation"
2 w( B1 ^: F2 `% A% j6 h4 z

( n/ |" ?, N( A' Dset-plot-x-range 0 xmax

8 A3 b: H  P8 J! p
9 d, E( F4 r, P$ s5 Vset-plot-y-range 0.0 ymax
, G! C" }( n( d
end
. G' A9 M3 ]. @. M5 O4 ]$ P# x% O. x  q9 V; t, N6 d; L
to setup-plot3
  }% O/ v6 _5 }( \! ?3 j: x9 w) g8 w( z6 b% t
set-current-plot "Trends-of-credibility"

. a; j! O2 Z4 q, Z
3 Q# [% I7 U2 e" E+ K2 D9 ]  M+ hset-plot-x-range 0 xmax

; v6 b% w# r/ c4 E" E" g4 M
) D' E' d  G8 p- m) gset-plot-y-range 0.0 ymax
; N: i: M" {7 o2 C
end
7 H3 l% Q" e& q4 j+ r9 f" B; \- l4 s; o9 k! ]
to do-plots
5 F. ^6 Z( S7 O" [. E4 Nset-current-plot "Trends-of-Local-reputation"
( M6 p/ y$ u, k. V6 |4 wset-current-plot-pen "Honest service") k+ C% S2 q5 o+ r
end* [5 N& N) `: D$ j5 }
& S/ C& A; s0 [: c6 x5 |- k
[ 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.
% z  b: m$ v& Z' R6 ?% v9 p6 q! c& F7 Q: J4 k, R
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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