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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
5 ~- q% o3 P$ m- K  G* L( k0 P' jto do-business
) Y8 r: |% y. e rt random 360
2 D0 o; T: D% y9 {1 H& a fd 1
+ a; R$ {  {7 U  O/ ~ ifelse(other turtles-here != nobody)[
4 B0 Q- r: {: g. h1 h/ D+ W; |1 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./ C* H2 R- P4 q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ s# }" l: }% r& v8 a   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) V9 x" D/ M6 l$ B   set [trade-record-one-len] of self length [trade-record-one] of self5 p7 ~! j3 a5 V# y8 S+ ~) \
   set trade-record-current( list (timer) (random money-upper-limit))& `! d( C. ?% M; H5 x; b# w0 t

9 H4 n0 I8 C$ ~9 Q) L+ G8 K( `问题的提示如下:
/ [6 @5 \! y. |$ N% F1 e- M3 B8 `# n. \9 W
error while turtle 50 running OF in procedure DO-BUSINESS& v$ Y0 s; R& X+ S
  called by procedure GO
' p  }, I' n! \# a( x; hOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' d, k$ }! k* V  J# d+ f5 A( b
(halted running of go)
% E3 u1 Z0 L' Z/ K% G( V. v* x& F  _8 k2 d. u
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~~
+ f  K+ v3 ~. ~' S( C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# I6 n2 B9 ^: ^
globals[  B- |2 s  _' q4 y! c' M
xmax3 ?8 N) W9 t7 e: v5 ]5 N* Y
ymax
& T& |0 H7 ?- Uglobal-reputation-list2 W% m8 O  l# q' B& I( o+ \
1 w( h& R7 o$ S* L3 l3 y& M
;;
每一个turtle的全局声誉都存在此LIST$ [) r* o- V" |) _- W) r* l
credibility-list
" y+ v4 Z1 n( S) D2 m4 t;;
每一个turtle的评价可信度; G- l7 R& W# V& \$ {& b
honest-service
  G! ]# ]+ B5 n0 kunhonest-service# M3 {* J  O; X4 R9 @1 {: Q
oscillation6 M& q4 T- \% w/ S7 s$ U( a4 K
rand-dynamic! [* u; ~$ h9 K4 z8 A9 V
]) ?0 i, G3 j0 B. J
- H+ H# }" H; F6 O3 x* z. \' Q
turtles-own[
3 Q/ o" v, O8 S+ n$ F6 a! Ntrade-record-all
$ j7 V7 |/ @% D6 J5 V) X;;a list of lists,
trade-record-one组成! T) i) X1 }& @
trade-record-one
# W4 x0 U* c# S4 E  F;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) l$ M0 ^3 Y! k* M! N

8 r% @" f% _  x  J;;[
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]]
, {/ }; P: I7 ]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]; A8 W- r* i2 b
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
# L& ?/ H! e) pneighbor-total
3 m, ^, r9 D8 S8 J& ^;;
记录该turtle的邻居节点的数目0 ]  m, I: l/ H" O
trade-time( r4 X  Z% B& j4 ~$ U5 c  L5 T) ]
;;
当前发生交易的turtle的交易时间
8 _, C3 \4 b5 Z, A9 h( sappraise-give( z4 V' c  o0 u# B" f: [) |
;;
当前发生交易时给出的评价: c# y( k8 k) C8 b' T9 J- [! O1 ?
appraise-receive
( u* G. c3 T' J: M2 v7 H, C;;
当前发生交易时收到的评价
: ^( d1 y$ y" x  Gappraise-time
+ |, ?3 C9 f; |8 S( G8 `% C;;
当前发生交易时的评价时间
$ y8 C  m2 s8 Q- J5 [6 b! Ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" R1 Q0 k0 C/ E; W* [4 O
trade-times-total! Y# V( Q% d0 e- ?$ ]2 i
;;
与当前turtle的交易总次数
. a- V+ p: A; Ltrade-money-total
- D+ _# s+ X; @2 m! o/ X. x- H. j;;
与当前turtle的交易总金额9 W4 L: v8 N$ C5 A$ P0 E+ B
local-reputation( r; b8 Y$ B6 o( H" Z1 P& K  c* \# l
global-reputation. b; l6 }' }2 s! s
credibility- o( T5 p# t8 {- D; o9 F0 {/ i% c1 `# v
;;
评价可信度,每次交易后都需要更新
& Z1 W0 @  l+ [; v+ {credibility-all
; t! O5 g) G" X. M" ^9 j# ^" E# F+ _( 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2 V  z8 r. i2 T& k# A% S  |- a1 }

1 a- v' m7 J) w8 C2 _4 p; ~5 t;;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
8 B; S/ ]2 @/ k, Bcredibility-one
! b$ k2 F  K7 c  W* E2 r5 w% h; |* 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
& B3 q0 b6 D1 U# M# Cglobal-proportion
( B4 p, G. o, r' `; X# s2 Tcustomer3 y1 f3 Q' r; {$ t2 n
customer-no& h$ z6 V' n0 V: F  L: {
trust-ok
$ K6 Z  [8 M3 f8 ?0 \trade-record-one-len;;trade-record-one的长度3 z: m3 {. P" Z0 l* I+ c" R
]4 _8 r& a; N5 M0 Q' V, I. e# W

4 E6 Q! n, m) G5 T* K;;setup procedure
  ~* o5 g. k* D
; W7 `* b' A( z- R' F, A7 Dto setup2 ?) D; B& R0 W! F" d4 p- {

. ]1 q6 ]$ [7 X* O6 Y+ A/ W# dca
9 g7 @, N, N( r6 S. R

% o/ o3 z: m- F! k5 ?initialize-settings

5 J' K! N9 T. }/ O& P4 R$ C* E- w5 Q' z0 ?" o+ h, @- l5 [' d
crt people [setup-turtles]

1 M, ~7 w% v+ n, j' f5 M" S- n; f  u7 b# K; P
reset-timer
# `8 v$ Y9 I- m2 y1 \" k% j

7 x8 p7 O( G1 b9 w9 J+ s, ~poll-class
3 e! u( p( y3 {# I+ N7 U$ I$ C% @

8 P; f$ f' c$ F' r# tsetup-plots
5 a( u+ Q$ P5 Y0 ]! `( Y$ `
4 x4 m! d7 k; h' U
do-plots
: y" Z* N1 i( ?+ t8 y, r  I
end
7 o) Y$ D% Z8 M1 ~: F/ Q' V8 m& R  [7 N. B) o1 f
to initialize-settings
7 q+ ?) h! I) E2 H
! B4 |  ?: K, L. V1 B/ D6 uset global-reputation-list []

, _! _; |8 B2 i( v5 o( e# {! \1 b8 {, |# U; q
set credibility-list n-values people [0.5]
7 G5 Q/ B7 h* M# {5 ?: o4 B& r
$ p8 a: e) P2 G+ ]& s* h
set honest-service 0
% b$ E  t* j" d" o1 t# R& ]

6 J3 Q( U9 _# n9 N3 ~set unhonest-service 0

- i7 O5 x4 o  ^# j3 h* x' Q; i' o2 m- u" K% c
set oscillation 0
: X& w2 ^/ g( b6 [" k* d

" D& p4 g9 P# Yset rand-dynamic 0
, f2 \1 V9 i) a* v
end
# [* r' F4 q) j8 x: H1 n. {* d1 _& d6 L, K, j% J, s
to setup-turtles 5 R' {0 ?4 y7 p- D0 M. g8 M
set shape "person"
" c7 d2 B2 y- P4 zsetxy random-xcor random-ycor. O# s' ~# H$ p' w! X! K
set trade-record-one []
4 b) n4 K/ }/ q* ?) T
: }5 s5 {5 U# v2 ?+ ~
set trade-record-all n-values people [(list (? + 1) 0 0)]
. d$ o* ~/ ~: K, w1 f
3 ?+ y3 r& t+ L7 t
set trade-record-current []
! ~8 n# p4 Z( @- d1 Fset credibility-receive []: ?# a) {. k7 T5 B8 ^
set local-reputation 0.5
. |1 x$ U: C8 z: m( d) Zset neighbor-total 0
, y7 g: q  L7 B8 @" m' eset trade-times-total 0
/ x$ v6 p" r$ t0 _% hset trade-money-total 00 K; c7 y: m# z( m0 q
set customer nobody+ j! L: M0 [! k' C1 c
set credibility-all n-values people [creat-credibility]
. V9 @4 V: T+ @6 {5 kset credibility n-values people [-1]1 U+ Z5 Q/ u/ N6 h7 ]
get-color& _7 [' M  }! Q3 o) M" y! A
9 E5 [# @$ m) t, s8 U% \
end" z, d# F% u8 D* k
; O" l5 k* F1 u5 I. R6 _! U$ ?
to-report creat-credibility
# z. z, I0 x# s% n5 w0 l( g* E/ V8 Kreport n-values people [0.5]' A9 J. @; B1 x$ z
end
/ d4 t3 p: l; B8 `. ]" o3 Z6 O: i" d3 b% C6 V
to setup-plots
7 C: S* R( y/ L3 E$ t, D  L6 d' J$ G, s/ c& V
set xmax 30
3 w/ a* ~8 C* E! q: ?  v
7 b% v$ S, C- }  n$ B: w, `- T! l
set ymax 1.0
  k" B" N) p  n. p- j% @
8 Z  X0 j5 i, j
clear-all-plots
$ f7 Q& E0 R0 \% T
# g5 j' X: C" H
setup-plot1
; w* H# S$ r; q. E/ j1 Z7 v( `
$ W1 y; N1 V/ E
setup-plot2
. U9 s% G: F  |1 Z- R, u+ x

0 _9 d2 |6 g& ]$ u- D( b; p6 j8 osetup-plot3
1 D: k3 @$ g; |( ]5 R
end
! @- i4 B1 J" c5 @4 @% L& F* _1 K) D1 q& |6 H. D6 \, @& T8 f
;;run time procedures: ~9 `9 ~- ^- Z
- j- ^& [3 {2 z+ I
to go/ ~* {+ J; c- ?7 |* J. P
% f) |" F% P: m, j3 l  h% M
ask turtles [do-business]
) S6 I- ]/ p) i0 U9 D6 T& T
end- H  B0 s7 W, x* ~( i

6 z! S/ R8 q. c3 N% f+ K& s/ Rto do-business + Y  r3 b; C0 y7 _% T' z5 A5 A2 M
+ ~" ^0 b2 p# n1 V0 B

4 y! g3 u- R4 `  y" Q6 ]rt random 360

- J8 Q! `3 o, i3 Y* t! S9 x) V4 b) o5 I; n: x2 ~
fd 1
. O8 J  b  }& ^+ Q8 \; n

9 @" ?7 t! L; \3 V% Wifelse(other turtles-here != nobody)[

8 s* {4 Y! P- a0 b4 \7 B
7 U2 O' {  m6 V) |8 e! {+ B+ J6 a! w( Gset customer one-of other turtles-here

7 y1 q! A$ X5 |( q3 t  X) |( N  K9 o$ I7 j& B8 `
;; set [customer] of customer myself

+ q' f, G6 ~- P5 b! u) |. t& h! u8 G
9 r5 w; j5 c( S& B/ h/ Bset [trade-record-one] of self item (([who] of customer) - 1)+ B4 f8 b' H7 l+ H( Y0 t1 C
[trade-record-all]of self
. l/ [7 s" P8 L  k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, R7 Z2 W# @0 m; Z8 M, d
+ ^1 }. k# _: ~3 |! {
set [trade-record-one] of customer item (([who] of self) - 1), X4 ^' K# H; j0 F' a; b( o
[trade-record-all]of customer
; \9 C4 [1 P6 V2 @
4 h/ E0 m( ^* N7 K5 N
set [trade-record-one-len] of self length [trade-record-one] of self
% I" L* ^5 Y. L* g( ~$ V
# V; F  u+ N6 X7 K$ P3 Z
set trade-record-current( list (timer) (random money-upper-limit))
1 a) B! l6 ~; y! W7 d

6 M; {/ t0 O0 h% uask self [do-trust]
3 O" j! d/ h' a. l7 k;;
先求ij的信任度$ K+ r7 V" t' l* |) S0 X1 I" b

5 ]0 k# G7 k0 q+ u* bif ([trust-ok] of self)' c  `0 E- D6 \! L5 A, u: \
;;
根据ij的信任度来决定是否与j进行交易[
7 ~1 X5 M6 S' |) V6 Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" v) i3 @$ F5 l* ~9 q3 ]) J  A8 U3 X1 E3 F! o- @
[

0 ~: N. \$ V3 c  h  W  C: @8 ^  r* |9 z* V# l* l. o6 Y
do-trade
5 D6 D# a, x& `& c9 h
# d& Z6 y7 W, ~/ G' X0 R- Z( ^; K& S
update-credibility-ijl
3 N2 B  Y! r2 k- L+ y( D3 e
: W5 k5 \$ A1 O& }2 n: t
update-credibility-list
5 x. ~! o3 S& ^5 Y- v

$ ?4 m; G. d/ W8 r9 p6 g3 J
0 P2 W$ y% ~2 `/ e! e& a0 qupdate-global-reputation-list

0 P" N( X' v& O' a9 Z1 A8 q
' k* e: o6 ?) u1 j8 Vpoll-class
% i5 h- e4 z3 J, z. j6 a
' Z, K/ T! J' |  b, u% D; @
get-color

& ?$ D! r& g5 [0 H5 X: H4 b9 M& r) w& W) X9 Y5 O6 q5 G
]]
/ e5 ]$ u: h; C* E, S* h# T$ F: v. x/ _! r7 I
;;
如果所得的信任度满足条件,则进行交易
7 ?+ W+ R7 S' F3 @
& G& s- M$ T3 ], D* s[
! ^8 ?9 _  d: ?' V5 D

4 h3 v# R# @' w# s. r& ?9 h) Brt random 360
* `" d# r$ ]1 B* X8 q1 ^0 G

# B4 o6 Q& _7 Z) dfd 1

0 L: ^, W( O3 Z0 Q. P" Y9 c# S5 w6 z1 q( H8 w, V
]
. g; `/ o6 W# P6 u* X

+ r# R3 L% ]: P0 V+ O2 t6 g5 e/ send
. Z) _. |, j1 ^/ S9 Y! z  H

6 \# a! B  i+ d/ I* Oto do-trust 4 {7 H8 p' W  p4 q4 b3 r
set trust-ok False: u3 ]9 w" D* M$ T; \
) `7 R, q4 a/ X) _! P4 b
  s) y0 m  a" ~$ \* i% [
let max-trade-times 0
& P- B& d" {5 o% I4 v  r8 Aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 T# H3 s5 |# P5 qlet max-trade-money 0+ P( K+ C# v0 y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 F0 o1 I: P# l) l+ P$ y  a4 llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  t! E! Q1 [+ B; v6 f# f+ ]; D- W7 }5 N
4 @, E* f  V6 r: Q! Y
get-global-proportion5 k* h, [/ l. @3 R& e3 S( a. a
let trust-value
" {. v5 l9 t; C$ ]' Z/ Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

1 n9 ^9 p3 X7 u6 Gif(trust-value > trade-trust-value)
8 t1 @+ x7 d  L" |4 a$ a; ?[set trust-ok true]
# z: Q' c5 U: l9 h- d0 cend' S0 r% Z- |# G& Y0 C1 c, T
! ^* ]- O% i: w9 t  v1 M
to get-global-proportion
4 j" {& R5 P# Y+ h" j* g5 o5 eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* B( v7 p" L/ S1 E* }[set global-proportion 0]* k6 _* d% @+ s* V  I
[let i 0
) q" }) J' y, ^' L5 x8 Nlet sum-money 0
0 j7 e2 s6 {  ^  lwhile[ i < people]
$ c  J8 c7 }7 w( w( M6 K[/ [. k6 E  S6 d" @' Z! f0 b
if( length (item i
& g3 A' M' q3 E1 W; l& `[trade-record-all] of customer) > 3 )

  Y) J5 d, ~+ r% l7 c$ D+ O7 T6 ]3 y[
- c( j$ D. g  K2 Q' Q  V1 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- ]% V/ r% Z: S7 w. d0 t9 g, m
]# B/ ^/ ^- l( o' u4 M+ S- A
]
7 y* f) h7 ~2 t; b/ hlet j 0/ I; G# H: R  W4 x% ]! I9 U
let note 0; m5 f4 {4 R* O% ^& G
while[ j < people]
, g! V8 g! N3 ]  p9 d; D& b+ f+ x[# K$ ^! [& Q# y" B) g9 H( E" ?9 i) f
if( length (item i
: u8 D  Q' c. h[trade-record-all] of customer) > 3 )

  p( y7 F( v% m& A# B[
# q7 g. z4 c# e! r2 N1 X1 Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% Z9 v7 r* ^" |$ E! S6 Q6 u[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 ]( D( W% Z$ E2 n- ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ R% i# e; t' `) e]
8 C5 A7 ]* f8 [% k( c$ ~]
8 o& m2 l0 K2 y. s% k4 A1 {set global-proportion note) o+ y' g! C' h8 Q! Z
]
* P8 N6 u& M" }# Q2 k4 j8 m& s; mend! T# i, M6 w$ ]& t3 {
% G* T6 p" I1 Z( ?; A
to do-trade
$ ]7 j+ W( H4 V, l  r;;
这个过程实际上是给双方作出评价的过程$ C% u+ r& J; h0 n/ @6 i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 R. l2 I- F1 C. qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' q) J( _4 y5 N; n& ~) r2 F3 ]set trade-record-current lput(timer) trade-record-current, g! t- C& `; D& s0 T9 J# D( _
;;
评价时间
5 Z0 H! x9 P! L# Jask myself [: i; t1 V# L* |( y5 [
update-local-reputation
+ k, p8 R- X+ tset trade-record-current lput([local-reputation] of myself) trade-record-current
0 Q/ Y0 ]: p! w) {! b]
2 T: Z, F, j! z7 P$ Z: |$ G+ cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 H; t- M; H, N7 H) @1 M% K
;;
将此次交易的记录加入到trade-record-one2 S( N9 Y7 C, Y8 V) A0 ~! e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: `7 L% ^- I$ S: {let note (item 2 trade-record-current )
) a) a: ]# G1 @" n) A- @set trade-record-current7 _$ p0 r5 i1 i! h) w' V6 y# ~
(replace-item 2 trade-record-current (item 3 trade-record-current))

  ]) p2 s% t5 Oset trade-record-current0 @9 E! c; B4 q/ m4 I
(replace-item 3 trade-record-current note)
7 j; t$ U* U: q; M4 ]6 w! v
, s6 }) Q( t. P' A( Z/ s
4 q* V, i% c  B% f
ask customer [
" o2 ~7 i9 v% U8 e% q: Iupdate-local-reputation
8 I- q9 t- q) T; d- k8 }5 jset trade-record-current- ]+ W3 w* y7 y; a
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( x) [) Z/ a: {! k8 V# b. C+ K! k]$ ~9 i, E3 {; V& C8 ]
& l5 L! @2 y8 B- F% d! i) R
' [7 z' s1 f; \4 B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) ?& y& x5 E! L  [/ q

8 `. o; }. {# j% o- z! Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& M9 I! f2 s. b5 G;;
将此次交易的记录加入到customertrade-record-all( J5 y* O1 e/ f3 x5 x
end
# {" T9 Z+ l& t3 O1 O8 d4 m* a7 i7 ~) P  G: ^
to update-local-reputation
& Q( G& @' {* n8 n$ c& [  xset [trade-record-one-len] of myself length [trade-record-one] of myself
$ ~  G, }* [# Q/ W
2 s2 t+ u+ C) c. w/ }: }! E# ~6 u- d. p* W, W: _& k
;;if [trade-record-one-len] of myself > 3

* r( W% j, @! Oupdate-neighbor-total
3 j: }! E, _" {;;
更新邻居节点的数目,在此进行, d% h; ^4 J" N, d- P2 d. g9 Q
let i 3
; ^. }4 X: i" Llet sum-time 09 H. r" C9 J! c' x4 E3 j
while[i < [trade-record-one-len] of myself]! W1 D8 D, p3 ?9 }7 h. p. L
[, \: w# l* m& |0 P9 ]. O$ ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ j& B3 g8 Q! d  G' D
set i
( G5 K: U8 o" }) a5 H( i + 1)

& c0 {4 w6 X/ _]0 A# P! {" u  ]  F. K9 p$ I4 v
let j 3! B" b+ v  k1 j/ v( X
let sum-money 0' `# M7 Y4 s" Z  F% x: ^6 `
while[j < [trade-record-one-len] of myself]- D0 r; k1 {& B7 I4 v
[
" d. z) O2 ]3 ~" E: pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( A2 N. O0 n) P' F( w' m/ jset j
& H$ T6 k. B" N2 Y+ E. U% g  g( j + 1)

0 r; v+ P+ j* t( e  K2 d9 l" _]
4 }: d+ v9 N; x& w0 D5 s; F( Zlet k 3
: a5 b% z  ~7 t! f, @$ Plet power 0- b% `: h+ H# R; a, c$ J: K. P
let local 0
+ p3 L4 Y) c9 p" p1 _while [k <[trade-record-one-len] of myself]( r* o& M8 O% \5 \# r0 l6 C+ w
[
3 Z7 q+ l* ?/ {& [8 D/ Q; nset 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 c6 G( D  J$ X- @. ~
set k (k + 1)
; [* i: n, |; i  o& I$ D]! J% X( N0 p- i- ^3 _3 B! I9 R8 a
set [local-reputation] of myself (local). {; l/ D7 {# |' V4 n. b: E
end/ m  V  e  m- H  h

! X* j- G3 u1 b4 i4 x( i/ E- ito update-neighbor-total
- X6 V! x" F$ j+ |; u: D* R9 ^, _9 e* w- o6 O- ?4 L) ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ u6 w. w6 V* @$ Z' P7 `' h; V" o6 F! |5 n/ k6 U/ i# e
) H( A) G+ G1 @/ q" h0 w
end
7 w+ W3 F- S3 r3 Y' c3 d+ S/ N1 C1 s: d+ t
to update-credibility-ijl
4 c. W# z6 u: g. i2 D' C$ a3 M5 y
: A& _6 E5 L5 d+ I( r# H9 Q$ g;;
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。
9 p* }7 b. |' t. ]' Zlet l 0
1 l* o0 Q7 k0 o+ H* Twhile[ l < people ]
0 \, ^0 ^* X: ]3 K0 ]. ?% p;;
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: Y# u& i( A0 J% w
[
2 h& P0 p3 _3 T  w0 hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)' ]8 u6 _% _+ q$ V7 t* ^7 y
if (trade-record-one-j-l-len > 3)
: d& s7 m8 A8 e6 c! k. K+ T[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
9 ?, G! Q  i$ B( _7 ?% _: h7 elet i 3
2 Y$ i& |( j; h$ C6 ^( Zlet sum-time 0
9 f) l2 u( v) ~9 Q+ F1 I/ K7 A. Iwhile[i < trade-record-one-len]
$ M/ `/ N, W; H0 Y[
" }8 i& i- x2 u' X+ [/ g$ Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 P. S  z  a2 v$ B: }: }* T
set i, C$ F5 w9 |) {2 ^; A- X9 v
( i + 1)
3 \+ e# k6 n8 D. c8 i9 ~' `
]+ e! d% q# j+ h% E; j
let credibility-i-j-l 0& G" p" K8 {( t3 `
;;i
评价(jjl的评价)6 N9 g( L- C% w/ I0 e! {; e
let j 3
7 n7 @; Y+ _  s: v! b% z* o: rlet k 4/ F; m& J& V4 N
while[j < trade-record-one-len]
; b2 H' q( Y* a; T# _. {8 i( K[
  w  h9 V! f4 l4 t. cwhile [((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' C) G! I6 M. s1 b7 X
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)
8 U7 d/ i' z+ i. Yset j( z! j8 L$ X4 j" E$ P! x
( j + 1)

0 [( X' B$ J. c7 [! v]0 q! }1 W0 E! |* H2 l
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 ))
4 I! k3 Z8 m# i" B. V" A
2 H; e  U3 p* U& ~& l* z

% s2 `. i6 w+ A2 y3 g) ]2 zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& p, r- ~' z% a% \( y;;
及时更新il的评价质量的评价
1 a  W, x* Y  ]5 a* Y+ g$ `. mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, u2 u- a1 M% J0 S  `0 j2 qset l (l + 1)
& n7 Q* |" W. s. X1 Y- Y% {; W/ B]& d3 q" [  |. j: Y% K
end: V3 i: Z9 G4 U3 [  Y
8 Y4 S: A& p; m1 B$ Y5 t  v
to update-credibility-list4 j# ]6 K7 [5 Y9 b. @1 G+ l: J
let i 0' O# H; x# U+ p# U6 @+ _
while[i < people], A. d  ?5 Q' {
[
, j8 j! {- @6 \3 Plet j 0& r) B7 ~- p9 ]( B& q' p1 P4 H
let note 0
. j  L* e. P0 r1 p; |9 k" hlet k 0
3 r4 K6 }  x  W! M- r" ^2 P% c;;
计作出过评价的邻居节点的数目
! T& ~& ~+ s: Swhile[j < people]8 U" Q/ c9 C7 w3 |
[
# @! i% z" |$ Y% Xif (item j( [credibility] of turtle (i + 1)) != -1)
: b: j6 q* F  y2 k) M: K) s$ y  @;;
判断是否给本turtle的评价质量做出过评价的节点' \  q8 W6 w2 c7 I4 W7 q1 P1 x0 B3 ^
[set note (note + item j ([credibility]of turtle (i + 1)))
2 Z4 c+ D+ U- R5 i$ s6 W/ R;;*(exp (-(people - 2)))/(people - 2))]

+ H9 ^2 q! o. t+ h  D) N! ^set k (k + 1)+ T0 G1 M: h6 J( @- b3 P
]
2 U/ X) w+ y3 \* @- S, |set j (j + 1)
! P; _9 P/ q, I( ?]
$ A- g) h) W6 X# Z0 Wset note (note *(exp (- (1 / k)))/ k)3 ~) M* B* ^6 s5 l
set credibility-list (replace-item i credibility-list note)2 P7 y* m" `2 q" s- H9 @1 @
set i (i + 1)
5 s& h3 P( m5 A]. A2 V; n; a3 K* g& q& E5 |3 s
end4 h7 p+ T' q! M7 H; U8 \+ b: o
& h8 h4 v; ?9 @- @& n4 _
to update-global-reputation-list8 i* t" @" U# }) e7 Q" a( @
let j 0
( l/ R- [, z# D4 y+ n) Vwhile[j < people]
0 H) A7 \. T2 N+ ]* j[
* M7 \5 j! h3 O+ f! @# ylet new 0: W7 l' \6 g1 h
;;
暂存新的一个全局声誉  L2 Q9 X  _  K. s
let i 09 Y3 Y& U+ i( k( G' z, a* k( t
let sum-money 0
4 Z  W2 i4 u' ~2 R# Klet credibility-money 01 M9 P& Q+ f9 a# ^: G
while [i < people]
! ^, ?/ |3 W% Q2 `1 z[
+ O# z( W. X3 S2 Y) L& Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: t/ |3 G3 d( I1 `( F) Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& {$ g( K+ i- ?4 G* _set i (i + 1)
8 D* j8 @* F5 t( `' c]
7 ~1 B5 z& M4 Z1 \; @4 }6 alet k 0/ u% m5 a) s( F
let new1 0
1 G8 l  P6 U7 c6 z$ B" t  ]while [k < people]" g5 M( T0 H# A5 @. [* A, Z  ~
[
7 }/ _+ _3 _5 v: s* ~) j- {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)
- M; L4 \& R4 {7 Aset k (k + 1)
  `/ Y6 u1 j+ ?' r$ Q]" M( C' b4 E0 {  V$ B+ s4 o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 m8 I% I) q/ {) b8 ^" f# c* g- L
set global-reputation-list (replace-item j global-reputation-list new)6 a8 W9 v& @6 s! B2 ]& X) O
set j (j + 1)
* @" k6 X& q4 X" N. z" F! \, Z]
6 ?2 o" o( O! ]* N4 yend* W8 _- i  T1 e% L. X: c- R( _

  {9 x# Q1 r. ^3 O3 h& X, m+ c% ]' ]) N& h: j$ w. V
  c' k4 ?3 B: {% {7 _
to get-color1 n9 u2 S( u+ S

$ M" A/ q# C9 Z1 ]* a" Eset color blue
* Z! V+ _2 `, a$ T: T
end) q6 R7 A( @9 G

1 Q% e2 n# B& A9 \$ Hto poll-class1 Y  `0 m5 D5 v' J& R+ }, ?% w
end
6 h( z( p0 X. M0 |; A+ N3 X2 f
2 y5 k) d) ]5 K8 Rto setup-plot1/ C9 x0 N7 U0 p, [
2 n! Q- L5 G: l% C1 t- _) ~9 [
set-current-plot "Trends-of-Local-reputation"

; Y" w. \; I: r' i, ~% K4 c. Y3 L$ e; i
set-plot-x-range 0 xmax
: }. P/ e1 w7 Y  U9 I
6 T. A1 ^: A8 _: n7 }+ b$ Z  G
set-plot-y-range 0.0 ymax
9 f" l# q7 f8 q3 N
end
8 B- Z, K5 B4 d4 z) t& `( @/ ~, {0 I
to setup-plot2, a$ m! `# o* i5 Z- Z/ E7 Q

. _6 Q3 I# v' |/ c! u1 R( a$ Gset-current-plot "Trends-of-global-reputation"
3 v) \8 W" {) [7 i% y
2 _1 Q, V! M9 c8 m: m
set-plot-x-range 0 xmax
. k. q; v2 \; L8 ?; b* O/ M0 d
  z  }/ _% d; W& ~& _# ?
set-plot-y-range 0.0 ymax
! }% }  z1 Y: k2 P- B6 j" q# @1 e
end
- V4 `* \  q$ `" \+ g4 G: J/ C: G# j7 L6 y
to setup-plot3+ T8 z  L! e+ F' {
3 N* r. M) L& E2 S5 ]0 i) D
set-current-plot "Trends-of-credibility"

; _: S$ i) F2 x8 b' P* X8 J
" h2 N' D( _) M9 Uset-plot-x-range 0 xmax

7 L. Z. a; d& c- e2 e. G! y" H6 t6 E
set-plot-y-range 0.0 ymax
0 [2 Y4 d/ m; d& A
end
' N3 T+ [  m, N: U) R) Q4 E1 y; |4 A% p) X* L! n
to do-plots1 r6 F0 b! g+ D9 f; q
set-current-plot "Trends-of-Local-reputation"1 X- r) P8 K9 ~
set-current-plot-pen "Honest service"5 ^# P: c# c0 A$ Y0 a( _' j3 }
end
' p1 }# Y4 L$ V& l3 B/ d, ^0 {+ L3 C  @6 @5 n& f5 N6 ?6 N
[ 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.
1 h- P, l2 W4 [# R  d3 A( J+ r0 `& Q% g9 H) i) Z2 z! J" z9 N- e; M
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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