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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:
; f0 x* U/ l2 a$ A8 s& Vto do-business 7 h/ K; c8 [% |0 z/ ?! h9 C
rt random 360$ m  E# d6 _# P6 h, \
fd 1
( F' i. T+ L7 g% ?# D% P3 D4 e ifelse(other turtles-here != nobody)[
0 |/ T( _7 g: S' Y   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.9 E, `$ [+ ]2 B  J
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 E  J; ~0 H. k) W- Q  B. T
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 m. {) E4 ]. [1 T; S: `! T) y   set [trade-record-one-len] of self length [trade-record-one] of self/ o* R& B# y! K; q. [
   set trade-record-current( list (timer) (random money-upper-limit)): t& N7 V' G- P( a$ T6 C: {8 G/ I

% L! j  I  q6 l( p4 b+ K问题的提示如下:; E  `: x9 |5 k* u7 X

( A1 Q" k$ k5 v6 Derror while turtle 50 running OF in procedure DO-BUSINESS5 k6 r. ^0 \, C! r; \& o, Z2 K
  called by procedure GO
( A( y  Q" Z4 K, a$ n1 HOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 [/ ?$ d6 p/ n$ S* [$ l
(halted running of go)! ?9 w: V: [, O

& o0 @, X; I2 C5 Q$ S% h9 H7 T2 K这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
4 p8 A- ^% _. Q1 V( h# \- g* A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
! V" i# h/ T2 v$ x: ~, P3 rglobals[
# }# C! N# ]: s- n, I6 `6 d9 Sxmax4 [+ [- v- O: q% I+ U) k5 Z
ymax9 S: E# d) O# Y7 X& T+ \+ B
global-reputation-list
& h/ O  y  V4 Z" l0 u
* ?; Y& n2 D5 w* `;;
每一个turtle的全局声誉都存在此LIST2 o+ {2 N. J6 v0 j  m
credibility-list+ K9 O" k" @: U! w5 t
;;
每一个turtle的评价可信度
/ V$ ]. J. Z' A# ]honest-service7 c+ d; v, {+ q9 P
unhonest-service
) y# A9 i7 b) ]+ D' Soscillation7 M( }. K- w0 [0 A9 ?$ _+ F
rand-dynamic
0 G, N5 h  O) n) M2 {- v! }) P]
0 q$ e* T4 R: Y, d
3 S5 w( V+ F* wturtles-own[  N4 K- g/ B) v- d3 L! F1 b; `
trade-record-all
; u' b( P( a! Z8 ];;a list of lists,
trade-record-one组成0 H0 |+ M, W: }, k2 Q
trade-record-one
" g! e% g; P: O# 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+ W, D, H; \8 k3 D
4 O% w4 D2 f8 @( ?( U9 q
;;[
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]]. l5 M3 z; A+ T
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]. r0 c* \8 A6 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% e/ c% a$ B* B. b6 b
neighbor-total" ?3 O) D3 z  X# h
;;
记录该turtle的邻居节点的数目
. m/ u# h! y$ Q% @& i$ Ttrade-time9 w" @* r+ ]) m
;;
当前发生交易的turtle的交易时间
' _% Y+ l0 C- d& k! g+ B0 @+ Bappraise-give, I7 I6 b, u; i) e, |5 {
;;
当前发生交易时给出的评价
9 h4 y, t8 S- {. e$ Vappraise-receive2 w* B9 K+ c% Z
;;
当前发生交易时收到的评价( H: D1 m9 J# s' W3 N
appraise-time
, A0 t% e8 E# R* `( s5 z;;
当前发生交易时的评价时间  j9 z: p. U3 H5 {" h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 h/ [, Y9 X6 u9 O
trade-times-total8 @  l) ~* b" W9 n' |8 b: z
;;
与当前turtle的交易总次数
  F7 s6 {, |. o  K9 M0 ztrade-money-total- J% ^0 G. e( c& t
;;
与当前turtle的交易总金额9 q. Y  m8 ?. h8 ^# {6 G' J3 w. w
local-reputation) E) {$ b# U# L1 T" k( ]
global-reputation5 k+ [4 k7 m$ j
credibility" v  X7 J3 s: c0 ]: B/ n* L
;;
评价可信度,每次交易后都需要更新7 \. N$ ^+ f# i/ R9 l- ?/ U
credibility-all, ?5 x6 F6 t0 n" h. z2 g, B" H
;;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
4 c. y9 B# ~( T5 ^4 ?& B; d* |8 q. I" ~3 X; m! L0 v
;;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
/ K1 L) z, ~! s: Q# Hcredibility-one
" w- G, ~4 B* H% s1 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people7 j3 G; X! N( i  k4 Q1 q
global-proportion' j* V$ O7 f0 E5 m& P  M( `  S' c
customer+ Y# j3 q# _0 F1 A1 g! p3 G
customer-no
2 T  P$ t, f; l$ htrust-ok
; _# }; J2 e5 G6 D. X7 r* D5 u* ltrade-record-one-len;;trade-record-one的长度# z/ ?! [5 o. R# G- }& J
]. N* x* e/ {& l, k

6 b! H1 v# w  r& s3 p; k;;setup procedure6 X( l7 r$ f5 I# F
8 ?. r+ ^( c1 J; t8 P/ g) p
to setup
- H- W6 a; Z* s" Z
; f4 Z( _! B, P5 m( Bca
* I0 ]1 x# K, C: l" v* L
, a; ?$ |* N% T# O1 ~1 v; O9 w
initialize-settings
( U# Q" V1 O. _! n" f* `0 T

+ J# O4 N8 o3 G% B; N, g, v7 o2 ucrt people [setup-turtles]
; q. H/ o1 {- B* p. o) T

) W- x% @( |% Z, Z# o; ^1 Jreset-timer

  m' ]; E! u4 q6 A4 q6 |, C" K; X/ t- r; E
poll-class

9 h) N5 i7 ~4 v1 s  R& p# p5 f3 `6 A: C8 p  Q( q
setup-plots
. }6 W  i, X- h6 w$ d4 D) f" G! n/ {

# q0 Z1 C3 P. i) f; xdo-plots

/ W: L2 Z" C0 U! o0 W2 ?, j* uend8 ?$ |+ a. X0 E# \( [7 i
! W& R$ {1 r6 H6 v
to initialize-settings, r9 @& H6 O4 ~+ H' w# Q* N

0 h2 Z1 X5 j; D: l9 W* r/ k" _set global-reputation-list []
% o3 G! ^) K" ]; y3 r
  `5 `$ _" n& y* J0 A+ D
set credibility-list n-values people [0.5]

* \! W' {( U' b
  C# r+ M) M( n! D1 a  yset honest-service 0
8 U1 z) {7 w+ Z% @
2 y# Y/ d1 b9 `7 F$ ~, Z
set unhonest-service 0

  z( T3 K6 _3 A+ U1 w* f  J5 `: ?, j' ]! f* \
set oscillation 0

( Y  e% L3 i2 r3 _/ j
; g* j6 v( H. E7 |set rand-dynamic 0
* x3 Y) ^, r% u
end
- Z: I% n8 S# n# ]- G; h/ X: |; r& Z
to setup-turtles . `6 n% G8 q9 u3 n% O) B6 U
set shape "person"
( ]' i2 e4 |( l4 W0 {/ \& gsetxy random-xcor random-ycor4 T+ @7 N4 }8 b- G8 t
set trade-record-one []3 H) c! J6 ]5 J

& }: l( U" T+ q  s- \: R! Lset trade-record-all n-values people [(list (? + 1) 0 0)] ( v* H, o! p: X4 W- g+ y3 U

7 h" m; u) Q6 i: b9 `! ~5 |0 vset trade-record-current []
+ S, W4 t" N, v* x% {2 Q% G9 F8 u& nset credibility-receive []
) W, j; E8 X4 m9 g5 e" G: G% Zset local-reputation 0.5
, I$ ]: W/ i, ]  Iset neighbor-total 0
7 o) m/ S( E. ~% y' |  k, `set trade-times-total 0
1 Y- m. i( n5 I* ]: x' P% n- ?set trade-money-total 0
) O7 z" q) d. o% Uset customer nobody# R, v) i% k% `; h$ Y
set credibility-all n-values people [creat-credibility]; R' Y" O8 b( v: ^! t6 W2 W1 h
set credibility n-values people [-1]1 _" }$ M3 q& t9 |# Z7 l2 E1 M
get-color$ M3 }+ t9 |( {6 @8 _3 N

. w% Q6 ^% V( M; s1 H0 Vend
9 v& |6 I/ ~: l6 A5 e# S* t
8 E2 O5 w3 Y* V' {' V$ ]to-report creat-credibility7 n+ F. b( T* l) T# w7 p/ o
report n-values people [0.5]
3 t2 C- Q7 Y$ w0 H3 D" |# F/ ~end
, t4 o. `. W5 [! @" o
% Q6 }( r- E% ?! Q" [& ?" p: cto setup-plots
0 L! M" ]. e, c$ `
& B- J# D7 O! [4 y) w* i3 k' H& |set xmax 30
6 p% L- E( J5 n: K% U

* L# r. D2 k9 F  g( u5 R( d; bset ymax 1.0

5 K9 o* U7 z% G' S0 h$ g' M+ d7 A* T* g
clear-all-plots
5 R" S" J* ^# U& _, u* _0 b

) ~+ n1 q* s4 Wsetup-plot1
4 D% @3 D5 Y7 H( ~7 u8 i
6 \/ f3 h1 V& j2 ?* P( ?. C
setup-plot2
! y, L# T8 S3 N

+ `" q; j0 w  r$ Nsetup-plot3

5 j1 Y5 e& y8 r2 x$ @end
; S) Z0 r* W9 A) `5 v7 C" t
0 I. c- v; ], s5 S;;run time procedures
* Z& H2 ]7 e; s2 q$ V8 g* ~
3 u) R4 n& }( I4 f$ [2 Y8 |to go( n4 m# p# Y& s' H  B
$ f9 F2 ^; N/ _  z
ask turtles [do-business]

  Y, c; m4 X) d- H$ uend! [  s$ m4 p2 a) x) ]9 q
/ A9 h' p" U, A% z$ Z
to do-business & K9 ]( R; H' `; v, X

$ J1 ]9 y/ i/ k+ d8 R
' e( }" p8 |/ o! m* q* E" Zrt random 360
3 c  U- J5 y. w) ^
8 {- E: {9 Z6 a3 @) l4 x
fd 1
4 H2 m# e5 T( a4 x' d! F

" r  j* x" t- \1 Gifelse(other turtles-here != nobody)[

7 w7 M, j7 [7 P8 n7 J/ ?: V
* D( ^% _8 b. m4 d3 kset customer one-of other turtles-here
7 d; g# D) u' P% z7 X
1 C0 }- r1 z6 p( \$ q0 Z
;; set [customer] of customer myself

, e4 [; E4 I; ~+ R. D) I2 b  ^8 [5 Z( D9 {
set [trade-record-one] of self item (([who] of customer) - 1)
/ R+ R/ G! F0 f[trade-record-all]of self- n" {; i5 y, v0 X. U- U% R$ e
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! h  [, l0 D. u2 U6 L( k) I# U$ |& U9 ]
( R: X) q# r/ k% a) ~  oset [trade-record-one] of customer item (([who] of self) - 1)" O, `, ~9 P6 y3 }) k
[trade-record-all]of customer

" q& C! ^- |6 J, o  h5 A  C
  H, Z6 _% U2 B! Tset [trade-record-one-len] of self length [trade-record-one] of self

" B! p- j# t% L! i
& `* F+ B; t( o! }& A5 N3 p. a3 w, oset trade-record-current( list (timer) (random money-upper-limit))

) o2 M2 S) M- A6 y, o9 {# s- T9 I0 x* L( j/ Q! y1 f# F/ L( F
ask self [do-trust]6 t( O; _* j: C) x$ u# q
;;
先求ij的信任度
( b4 L; `! n9 w: \
  o! W6 e" k+ A( w" r% sif ([trust-ok] of self)$ @7 }* d/ ]9 j3 H
;;
根据ij的信任度来决定是否与j进行交易[
* |8 ~0 @+ H1 e2 i/ Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 n6 O# }/ a, T5 B6 ?
0 Z4 T( `! Q0 _6 R/ N9 {% J
[
. n# |+ q1 T9 e. Q# [1 L4 y
. [* |& |+ E3 M' W
do-trade

" \6 Y4 c2 l$ T+ O$ W# U8 Y# _( D& }
update-credibility-ijl

1 C; {7 b6 ~( o6 k; o  k4 k" G. Y$ S8 i; D) v! C" L+ B
update-credibility-list
8 h5 q% ?  v: [5 n5 j* Z

, \4 c) X6 w# P. q
, H2 G  E* S% F! T2 `/ V1 iupdate-global-reputation-list

" _# Q+ O) K- L. E8 m5 G3 Z( t. C2 T; v& q8 j$ {
poll-class
! @/ p% v. P6 j) L
( {7 x) e! Y! N/ q  B
get-color

. ^9 ^4 p- E7 k1 @) N1 {1 Q
8 A! e( z4 M5 r2 I7 c0 m]]
- M$ r+ d3 Y5 c/ \8 B5 w( e' W0 P$ R: t, m$ k/ e; `
;;
如果所得的信任度满足条件,则进行交易
. h) O; Y: Z$ }- r7 g( h2 O- R. _/ I: e* a& C' C! E$ s6 }
[

. Y1 P! e- a3 D6 `- ?% _0 z3 y; U% v4 _6 ]: P- j
rt random 360

  b0 p0 W2 R$ Y  V- `. h$ l! \) Q9 E5 t- ~: ^, t; P- i, Q
fd 1

" C; q& ^, \0 g& {* U
4 F2 J! g* i7 e- y4 w]

' X! Y' T/ f  Y) o. R3 s; d) S6 e% ~9 X/ i) [
end
8 U8 e/ ^7 J: b! f/ I0 _+ p9 S

5 W( ~3 h* R4 e9 }7 ^- Ato do-trust
! s8 ]5 g" t, x" @$ tset trust-ok False5 ]3 ~3 N5 R4 J5 t
/ s8 ~3 A4 ]6 g: i% F: U
' a! A) h4 X1 W
let max-trade-times 07 t2 V& v. m" t( V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 S. O7 V( m! p; u8 N1 ?/ ^1 Q) A, I7 zlet max-trade-money 0
" V% ?" h8 t. o4 Q' ]/ I) ~  [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( E/ U: \+ Z, N! t" B, L. S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 O, U. H( d8 l* z) w9 j+ t5 g" @# n0 F8 I$ e+ b4 r
9 ^% R' o, E$ d% d9 S
get-global-proportion
; z/ s1 p. P6 b5 k5 L$ s; B6 ~8 llet trust-value
' N, P+ k. R' |- J6 c( Z( Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! w7 {- ~" @7 P7 s5 \' Y# F
if(trust-value > trade-trust-value)
9 s' L& E" b' E( y' h& b[set trust-ok true]8 p7 G5 U/ b1 Q+ K6 Q; ]' h
end2 T+ U, L+ Z9 i6 ]- @

; i5 V# B8 t7 b, ~1 Hto get-global-proportion" y* y" O8 w$ u( b) \+ O. S6 k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' w3 b4 U  ?1 G% `( f* a( a
[set global-proportion 0]" }; b) t$ A8 K5 C; n
[let i 0
: P& @" t% x# K$ t- }5 rlet sum-money 0
+ q; v# n/ H5 `9 }! hwhile[ i < people]1 C3 _' J+ @: @, B) S
[) n/ n5 t- b! ]( n0 A9 Z/ o3 ?( t1 z
if( length (item i
5 z( ?0 G, x! z* }2 b( v4 Q! i[trade-record-all] of customer) > 3 )

( Q: N, e: M2 r$ s. |; |[+ I4 d: ]2 X+ V! V" d! T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" v( A. z/ o% ?/ \. {
]! n. q, X$ ]1 E8 N  t* i
]! N5 s0 E8 I% E  O
let j 0
- }; V4 W4 B' C" Rlet note 0
2 B1 _/ X+ T/ y4 o# \; y- I% i7 Rwhile[ j < people]
9 C/ l8 O2 z: ]6 [" F/ G2 I[
, R9 W$ o. K& k6 z- m; X& ]if( length (item i+ g3 e1 T% w  P- C  M
[trade-record-all] of customer) > 3 )

8 V8 Y8 G8 P) v0 x* Z3 q[
; E8 |$ w; x$ ~) v% b* Wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: m3 D9 q' {8 y* j# A: k+ d/ a) q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  g# h9 r+ \! |5 o$ X, R9 k
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" ]  |( O. U& W* D% `$ l0 H]1 J5 _* _2 t( g0 ?; @7 ^
]5 g/ B$ J9 v8 U
set global-proportion note4 ~5 r4 g1 G" X) j0 `  @9 v- |5 e
]3 W- r! w) H) w  L3 O5 Y9 \
end
& A9 v+ l  V7 O3 Z  ?* j+ x$ }9 d! J5 W) ]& O9 N$ i; Y
to do-trade" Q+ ^: n, B, v6 U. b* J
;;
这个过程实际上是给双方作出评价的过程& t1 s2 n  y. K$ M% w* F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; Y1 i4 W0 `3 z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  F3 ]' C' |' C- j# \
set trade-record-current lput(timer) trade-record-current/ K# T$ t7 r# s9 W
;;
评价时间- e9 h/ j3 T0 B1 Y+ O
ask myself [# C2 p" b' f- x$ X1 l
update-local-reputation, E8 G; B# G) G: r3 Y( a5 ~
set trade-record-current lput([local-reputation] of myself) trade-record-current
$ W& c' Q* ?. E2 U: u# W]  a6 U8 {5 v- `2 k3 {0 Q- V/ A& {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 g( \! M* X9 `( P
;;
将此次交易的记录加入到trade-record-one" ^6 r6 L5 H6 C. d& E+ W3 C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 B+ M6 S! L5 f6 L3 b& u
let note (item 2 trade-record-current )( p- z/ v8 E6 W
set trade-record-current1 e6 K2 m- }5 B* W' i
(replace-item 2 trade-record-current (item 3 trade-record-current))

# p& J* S# ]+ r; L* tset trade-record-current4 a( Z$ B4 H6 }# D+ e% j3 R( m
(replace-item 3 trade-record-current note)
8 A; M9 k  v: N* e& g/ ?4 s5 s+ m* c8 W4 Q& E+ r
, U: x( _8 W% E- Q8 e$ b/ {
ask customer [
( m% e# C$ ?4 U  x8 }2 r+ O: q4 lupdate-local-reputation8 M2 N, Q+ n& O$ X
set trade-record-current. C* {1 K" S% N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: F; L) _- @3 `( \5 s# F]
& T* I4 R' c! }' w$ D5 P; f" L  k9 g8 ^/ [9 A: \: P
" J8 I! @( d  a5 K0 }0 G4 h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 K6 L" j; P0 @  O: S6 Q
2 r' Q$ E' j3 F' P( Q9 i4 e2 h5 d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 M$ {% F4 J& C' V6 y( ~;;
将此次交易的记录加入到customertrade-record-all
5 f3 L  f+ s- p9 lend) V% K! v7 O" ?- s6 ?1 S5 T  b7 I
( b: g' h- L6 V7 v) ?. o+ h
to update-local-reputation4 `# ~) V& N8 e0 k7 _5 i0 s7 z  w
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 [1 z7 w/ i2 c6 b
) `/ g0 h9 t4 k( t' b- e+ s) C
: _6 M3 k/ ]9 C+ M;;if [trade-record-one-len] of myself > 3
1 |* [# A" n! _; x0 c# h# W
update-neighbor-total% x. n3 o$ R2 o
;;
更新邻居节点的数目,在此进行
" X2 P2 p4 w; c* Llet i 3
' ^  }) }7 {" m1 q) N' L  xlet sum-time 0
# J3 B) [7 J) L( l/ Z: Iwhile[i < [trade-record-one-len] of myself]: c/ r2 `( G8 v, {% u
[5 n8 n! V! Q1 u  p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- V* t# D0 o; u  t1 R
set i6 x* j6 j! {: c3 v4 I' ?+ Y
( i + 1)

8 ?8 H4 G8 C* E  V]
' y7 ?: I* j* X) x5 qlet j 3
, r) h( |6 W0 {  blet sum-money 0
4 z1 X- j& l+ Xwhile[j < [trade-record-one-len] of myself]: |! l+ j% e* j- p
[
% N! u% ~3 @' V  x" H5 {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)
( J. `4 P! P/ N  l( n- E2 W+ lset j
; k$ a' m' H# u, [$ h: `( j + 1)

1 G0 n" V1 E9 o]4 b. p3 K" A6 z+ O
let k 39 z% _9 @) r+ [- R5 n' x
let power 0
. m9 i. S/ l- f. z3 Ylet local 0  o: Z3 y& o  b5 j/ _5 P. V
while [k <[trade-record-one-len] of myself]* _0 _5 X7 D& ?* Y( u* g$ g5 \1 O
[
7 s5 e7 V* T/ y& j+ E2 D5 tset 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)
. U$ i' g6 Z! J4 {( Q% Aset k (k + 1)" d* G8 P2 R( D, i3 I5 l
]3 ^& A+ A5 K: |, f/ V! N' B5 r
set [local-reputation] of myself (local)
% F9 ]8 [- U- ^7 mend
% k4 u2 k8 G) {4 O0 ]( f7 ]
5 p' I1 j7 K& d, [1 I, v! Tto update-neighbor-total
) [: i7 v9 e; e6 ^: t4 x! Q1 ~  f/ z2 r- w
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. b8 I6 M  N5 J8 ?% R2 ^& b3 P; j# m
, b1 f5 x5 M7 `: M4 Q" i+ [, a

* ?% B$ \. K. B3 vend
' p! A5 F* q: w0 j& X! V$ T6 J6 ]  o, q1 Q8 {, J' |, v
to update-credibility-ijl + |- ]' m; t! B) U" p
: K* m4 C2 m, h1 l' ], I
;;
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 `; b1 o) ^: Z3 klet l 0
( R6 a6 W1 [9 k9 T9 Twhile[ l < people ]
7 E* N$ b/ A2 o% D;;
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
0 }8 |! z. C1 L[" P5 D& i  s; F2 E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 ^4 T- v, i+ d% b
if (trade-record-one-j-l-len > 3)
: l% k! A: I: P' d; I0 ]/ M) X: ^# s7 s[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
$ r/ n( @7 Q' H8 F5 k' J2 i0 i, [9 k4 zlet i 3/ ~. ~, t. V3 p: ~) P# c& C( T
let sum-time 0
# }$ g' e5 I* q3 Z' n: Lwhile[i < trade-record-one-len]  p9 |& t9 [: c$ j
[
8 X* B8 ]4 I" a( Y3 P1 Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% ^6 j. m. s* N8 A  d/ e# a% Nset i2 `0 [8 K# t3 \; C7 Q" ]
( i + 1)

! D9 l' v+ P0 k]5 A+ G9 o, Y3 y  k
let credibility-i-j-l 0
4 Q- V4 X+ t0 G# l# f;;i
评价(jjl的评价)
, @% l0 e  @+ Q+ Z* F# qlet j 3' W2 `0 d) `+ I, |) C# ?& f
let k 45 |4 H4 Q. v9 z% l5 J
while[j < trade-record-one-len]
4 g) D! L; ^  r6 e- t8 l7 P[
8 U1 x/ e% a# n. K5 k) 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" @) a: ]4 N: G3 y) T6 h0 C
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)9 M% [1 S( V2 {! O
set j+ f9 N  _5 A) v, _
( j + 1)
( I. w0 `3 M# `" Z' r* I1 X
]
, K* M2 C/ N, d4 ]( m3 o9 n- ~* Zset [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 ))) h$ X: k( V" u) b
; m# f  X% w8 O, C. E1 ~) Y) Q
* L* B3 r8 W* ~0 ~; Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ X% Z- _  ?/ R& b/ |;;
及时更新il的评价质量的评价; _" e- k! ]; `8 ]" g( k
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% C+ l* l! _# J  N2 u& Zset l (l + 1)8 A6 K+ p9 m5 @. [) C
]
( Y! s$ K$ N0 `8 f+ `6 v. Jend3 b" \) @) {/ P; Z) s

$ Z8 A9 s. `) \5 Nto update-credibility-list
1 Y: [; }- H! rlet i 0
# W6 v3 q) P" E) a$ Twhile[i < people]. g, x3 O5 h0 O( m
[
/ o, A6 M( x1 L1 h" H7 Alet j 07 I+ Z0 I  F* X
let note 07 b% W, G/ C3 l2 i
let k 0
4 I; V2 r1 Q" V5 i/ Y;;
计作出过评价的邻居节点的数目
! _/ b- r7 g) d* ~  ~while[j < people]
, Z& D. H( W4 e" G2 \- L4 Z' v[
; A0 y) ~- `) J- G: M; Iif (item j( [credibility] of turtle (i + 1)) != -1)
1 H  m6 q7 ^# j0 V: B6 j: s/ _. [;;
判断是否给本turtle的评价质量做出过评价的节点& j1 G0 {: Y% l; R
[set note (note + item j ([credibility]of turtle (i + 1)))! \( f2 c# }, l" I! Q: ]
;;*(exp (-(people - 2)))/(people - 2))]

% h# {# S# ]1 h5 s3 \/ Fset k (k + 1)
' v' A. T/ y5 x) @7 O# m/ E6 k- z]
8 q; b& l7 Q% w6 Mset j (j + 1), r+ g2 }% u) E+ d# R! y
]5 `. O6 H, l3 H$ ~1 h
set note (note *(exp (- (1 / k)))/ k)6 @$ {% [2 a  ]- H8 c  R& z
set credibility-list (replace-item i credibility-list note)5 L7 _9 j  }7 w  T. ?/ T: _) @
set i (i + 1)
6 [1 Y7 X! ?& U( w]
" A$ t; n) u8 ]/ xend+ v: W. r0 G8 C  ]
( I: Y5 Q4 G. T) O
to update-global-reputation-list
! A8 u2 r4 k6 N) N5 N) K) ^( f% m! dlet j 06 ]7 T/ w/ c  [$ @
while[j < people]" I  j+ M' H' \0 \, }
[
$ O" q; X0 ?% g6 u9 ?0 {: Tlet new 0" m5 k) E, j3 i$ Q* E8 Y
;;
暂存新的一个全局声誉
, {, }5 L7 B$ P* I) ]* ~6 Qlet i 07 }( I1 X3 e: ?6 g; a' V  C
let sum-money 0: Z, L. }3 x. D  t# ~9 K+ `
let credibility-money 0
7 b1 e# Z7 Z# U0 S: C% y/ mwhile [i < people]3 P. a# L; r+ P6 |' k+ `/ N+ I
[
7 ]% x' m, u+ d# \) h5 a( d7 Kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 d) F2 x/ i% A0 u$ C8 aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 t! y" t& y5 R' _, }& |set i (i + 1)* @8 p# M. D6 @& E8 d
]
, |2 i% c1 C. U, qlet k 0" q! T% n9 j9 ^! H- g' B, V+ h
let new1 0
" m) t( K$ m  Q, w; n1 V$ H' @while [k < people]4 w: ~7 V& s6 I8 N2 g, g
[
4 R, ~8 S9 R. \( O7 @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)
3 n. U0 J: a3 d  ^2 Rset k (k + 1)3 x4 H6 I/ t8 {% U
]
! T* b, p- Y2 i8 N9 Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * U3 _7 \5 H. j2 r
set global-reputation-list (replace-item j global-reputation-list new)
: E  E7 }! w4 n3 l7 g4 ~set j (j + 1)
/ j0 X; s' i, K) t1 Z7 r) k]
5 w& f8 ?7 l% q! w( }% I$ }* yend
" o4 W5 U5 ]) y6 I+ s) W! V# Q
7 L; R# r/ g) N6 z) {7 j
4 L. [9 V7 O, ~. [2 x8 y
8 a; u# x2 y! ^; ]3 l( qto get-color6 V& ]- o) b$ e' z+ p, n; j
4 _4 k6 J- P/ N. t8 y
set color blue

/ s" Y  c# ~, e" t' aend
# n* f" K/ t" E* \4 e$ B2 }  z
- F( v1 H) V. w, Y0 p$ Kto poll-class3 [* I5 j" j# T. d3 X3 N' v
end
- V/ j+ `9 a6 y4 A
/ G  B+ I+ E2 \2 r3 U9 `1 j$ ~to setup-plot1
' k  G/ ?% y, i
8 U3 j1 |2 t0 A& f+ l' {! Z3 J4 yset-current-plot "Trends-of-Local-reputation"
3 r& m. G" `; M3 z! P$ l1 D, m% ?

# B6 F9 ]# `$ P/ `# D; oset-plot-x-range 0 xmax
( r3 K0 f) H  P. H+ T: ~0 }
9 M5 w  s; h2 _8 X- v
set-plot-y-range 0.0 ymax
8 G( V6 N* d1 q+ \7 ^% d7 H9 m
end4 a$ W3 c; p8 M8 T& ~' b
8 Y4 p) H3 M& F1 e. ~; g
to setup-plot2, i( V8 e+ z: u; W: s# S

) e* V) b  \# Q) Aset-current-plot "Trends-of-global-reputation"

; T$ z; B( Q6 p/ P
, B8 h& _" E& a7 w6 wset-plot-x-range 0 xmax
; J+ t1 k; H- b! p7 D
' Y6 {: L0 A7 F7 \) v/ s6 a
set-plot-y-range 0.0 ymax

+ I3 N7 M3 d5 A8 `6 `7 |* L4 Oend/ r, Z8 f# l' X% F$ o
: P& R# \7 f6 F3 G$ ~% U
to setup-plot3
, w8 l/ x; C4 j! M4 ~% x  N2 X8 e4 u6 G& |, e3 C- m
set-current-plot "Trends-of-credibility"

$ j! Z, V& p  {- f( V' H8 D& x6 H9 w
set-plot-x-range 0 xmax

0 p" a8 \, g  I/ d7 s) l! c
2 b& K0 T+ K# A2 h6 Y9 Eset-plot-y-range 0.0 ymax

# a$ b& [5 g& ?; |( ~, ?end
  f3 Y6 N7 M8 B7 K6 b: p1 v7 v& X4 p, w- t* g/ F& t& c
to do-plots- U. L7 W, d; z% O; e: n. ]
set-current-plot "Trends-of-Local-reputation"
+ g: L! ]2 c$ ^. I# Z! pset-current-plot-pen "Honest service"
( A! f# x7 i) s8 P4 J; uend
0 m% a# U7 }* H
; L' \+ R6 p+ j/ 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.
7 n, z: F+ ~: A% A& p- B3 ?
. ?7 f* ~0 U. ~, J  q这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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