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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:( Y* K: i' R4 \9 \* t
to do-business
" B$ J2 t% A! V/ {! ~* x rt random 360
% [4 Y: ^. X5 u6 m$ F0 ?9 h fd 1
: X( v7 f5 w( s ifelse(other turtles-here != nobody)[
, I' L% l7 K! s3 |+ s9 Q5 l" E   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.
5 a8 Q) s4 e0 k5 i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ b8 P9 j0 S* q0 [1 K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: D) P) I, ?/ {( c
   set [trade-record-one-len] of self length [trade-record-one] of self
! [6 ^, `( E7 I& U   set trade-record-current( list (timer) (random money-upper-limit))! t1 |8 U$ q8 f/ R& n
+ ]; x3 u, W& A6 g. I6 B
问题的提示如下:
0 D. X& h, B$ D4 H8 K% g9 w6 g9 v: _3 k9 `( z1 h$ B; B& t* v, d
error while turtle 50 running OF in procedure DO-BUSINESS0 ~7 v& z$ Q  y
  called by procedure GO
- K2 j1 e& R) m' E. W7 M1 AOF expected input to be a turtle agentset or turtle but got NOBODY instead.$ O' Y) ]9 z- [" Y; W9 u+ P
(halted running of go)
1 I; I9 E/ v# L) ^1 O4 b) O8 _! T% D4 o% c$ M
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~~
  n  ?5 V, O, R# x: I% J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 B6 d5 V( B% z
globals[8 k$ c$ i8 M" r9 @9 `5 |
xmax
, _% r! y) a1 S3 G; j  |4 Jymax
1 h& ~7 n7 N/ E+ n  _1 B# S! O) q! Eglobal-reputation-list7 D+ S& `8 b3 g/ A9 n. q( z8 a
  f. L' i$ ?- ~8 K& b5 |7 u# G( ^
;;
每一个turtle的全局声誉都存在此LIST
/ \5 a% l/ j; _; g1 `9 l7 Rcredibility-list
$ [# R3 V6 j6 [9 _;;
每一个turtle的评价可信度% i% ~+ r# e1 g1 f8 r5 ~1 y
honest-service
- B3 K% h5 N; V; }) F" yunhonest-service
! C0 Z; `  w$ n' I+ P, noscillation* y5 K3 s, e/ [, L9 g( \' V, _/ z
rand-dynamic
8 S3 j, e3 x" F: t]
9 u) E2 ~# o- Z# X# y; O7 T" c/ {8 n; q7 ?3 U
turtles-own[4 U5 \/ ]& R2 _/ O6 O
trade-record-all
$ K& V/ z0 V9 u; E8 x2 k0 o;;a list of lists,
trade-record-one组成
. ^0 {, A: b8 i  ~, [trade-record-one0 a3 N. g; Z7 A& _
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ _0 P% q8 V1 ~) Z1 N
( ?( w6 W5 ~7 O" e1 H
;;[
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]]2 `3 h  b2 S; q: |9 @9 |5 Q
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]
. T2 u! l4 X+ Y0 o( q" D2 w" s' Lcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list6 n2 a# M# Y" o- m! B
neighbor-total
. F  t) o( A' S5 n# I9 x6 u8 R$ O;;
记录该turtle的邻居节点的数目
: f9 F8 E. v: Vtrade-time/ }# _4 ^# E/ C+ B
;;
当前发生交易的turtle的交易时间
/ m( c! s6 d. D# Z& U$ C1 n  k) m$ kappraise-give
9 b  u0 e: h( X& t+ `# X2 D;;
当前发生交易时给出的评价
6 X( l0 z8 V3 E: ?appraise-receive
9 w: ^4 W$ T6 M; E;;
当前发生交易时收到的评价9 A) R% q  b$ G- s. n
appraise-time8 o3 z3 w& P# R4 d
;;
当前发生交易时的评价时间
) @* x) o8 d" P0 U& L9 m7 l2 qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& Z& j# j1 s2 z, z5 xtrade-times-total) _( F( I2 a% I5 d) k9 U8 q
;;
与当前turtle的交易总次数: r& _! F8 A; f1 y' \5 G2 s8 v
trade-money-total. r# h* b5 O. Z: Q
;;
与当前turtle的交易总金额
" o; T) S) x: I1 S; [4 g; i% p5 Mlocal-reputation5 Y( Q& v* f8 F& Y
global-reputation- q4 s- s, g- u0 R. O- B, Y9 |4 }
credibility, O) i$ w9 c6 A. |7 n
;;
评价可信度,每次交易后都需要更新
, _. W# Z3 w+ A$ `2 e1 D7 x) ~% icredibility-all
7 \9 o( t5 H% D+ l0 i;;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% w/ ^$ i+ X8 R6 k  k+ S

# {, o5 i' u, K- q) y/ ?! d! A* P/ B;;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
( Y1 H; K: x/ m( |$ tcredibility-one9 \7 t! A) y9 R; |; N# Q% @
;;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people1 o, ]" \) C) H+ ?( R* H
global-proportion$ D5 K$ U7 m5 [' `5 ?3 c* @
customer
5 \8 O2 s( a) e: t& G- P. Ycustomer-no  P/ l+ S; e5 z& Y) b8 m
trust-ok. r1 s3 }/ C$ V4 @( s! l# U) Q
trade-record-one-len;;trade-record-one的长度' l: X3 B+ t/ P+ M: u5 n5 y
]
; B, O% a% D- c% J6 b# z0 T
5 Y% H% x+ N( V5 Z1 q$ k% E;;setup procedure
- \- c* r* |2 w! [) p
( z% P, |8 f6 M+ \to setup
# R' a, j+ t* y- j9 x+ J2 K- B. F5 Y" G  o
ca

# j7 g$ h" f: ?% R. \
  S! f! X& S7 m1 jinitialize-settings

, B5 C2 C$ H' I. i( U3 R3 M% t, o. M5 H7 Z/ M3 G
crt people [setup-turtles]

) E# A! t4 P7 V5 L1 l! Q. ~, ~# o) \! L* K
reset-timer
- T* n8 Y# y* {7 ?! X9 S

  r0 l$ r4 Y4 w  w: Y6 Apoll-class
7 d  T7 z+ N5 H
6 B; w- M4 D! p( S$ J% r5 p- q  _
setup-plots
# Z% C2 Y8 m$ g
# Q" a/ |1 ^+ \
do-plots

# h$ K! S) y- O  Cend
# w* s9 s5 e! x! @9 Q* \; k2 w* h* K% ~8 A0 W1 d6 i7 U0 x8 \
to initialize-settings. ~5 D# O2 M2 ?) @; M

7 U+ [& o, C1 y0 e9 _1 @) A; Uset global-reputation-list []
6 o4 x$ x8 a  h9 K

' V  e9 Z. s7 G0 ^! T  fset credibility-list n-values people [0.5]
4 X$ G6 e2 Q  ~

* x" g4 [. G3 D$ jset honest-service 0

' D: m; R9 s* G. m: Z* ?( j6 T- g# V  d3 @, g
set unhonest-service 0

- O- Z! {! j. P: r+ X$ A6 L
, I9 ?! y& l$ zset oscillation 0

+ T0 ]2 M0 Q! X$ o9 n% M: c
; f. B6 U* I# _& E8 Rset rand-dynamic 0

/ E+ M7 W$ _6 V! p& o# Cend* o$ r% h9 W$ q1 g+ K( G/ Q
7 i; X! ]/ ]' Q% O2 v) v2 ~
to setup-turtles
$ A6 E, }0 m# V( D% b# i8 Uset shape "person"* P5 B5 o, k0 w
setxy random-xcor random-ycor/ T; e. g$ I" |/ c% T5 b9 j! P. E+ @
set trade-record-one []6 ~1 s- e8 F6 S" A
0 ]/ d, K. N* W; G; |% s
set trade-record-all n-values people [(list (? + 1) 0 0)]
" l! y! I+ o' T. |
1 V  n+ g2 \+ h# W$ v6 W0 T- f
set trade-record-current []' S1 K/ v# S  w$ r0 P' `4 j
set credibility-receive []
  _( T) x' z! y( X; ]/ xset local-reputation 0.5/ o; a* p( w9 {5 b0 }  P
set neighbor-total 05 W0 o  g& K% K, \% @
set trade-times-total 04 {5 M/ P' [% _$ X
set trade-money-total 0  l% o- v8 {2 B. X, U
set customer nobody5 Z# n& i7 E- u9 ~: o7 T2 F: w2 h. v6 p" ~
set credibility-all n-values people [creat-credibility]
% Y5 b  e2 Z- {+ ?' I" Wset credibility n-values people [-1]
5 m% h0 W1 i  u' ]9 t8 a" P' J. |0 sget-color. |/ p5 b# Q4 r: S( D
- q+ y4 n: h8 |+ v& x
end
/ j; Z. o, k! q/ t1 P7 ]5 X4 D, Y7 \  z" J: k! h
to-report creat-credibility4 Q% e5 L; L+ M& x! Y
report n-values people [0.5]* j4 n0 V+ K$ `/ ?2 R$ e' B
end
! i  w8 S% o$ P+ Q0 z- Q# y4 i9 W! W) @% }) z5 @7 Y' X5 ^
to setup-plots$ v& d5 ]( p: z; h& L

( C. X' {4 D; }6 x9 O* P  rset xmax 30
* l7 L! T5 x  d$ m; Q. s
  u1 R& R  l8 h' Y
set ymax 1.0

2 X. G  Y5 n  B7 b/ H  k8 ~# I- k! j0 d) d* t9 x7 ]6 f
clear-all-plots
5 W. G! a* O1 B, K

2 q9 K5 b1 j" S0 Gsetup-plot1

4 Q4 c2 V& t) f5 a
. D) E* a, d* J4 v3 P' w* V( ]setup-plot2
7 J3 v+ a/ Y. V# n$ D3 F! ?5 L

! r* n% h: U3 M! h6 esetup-plot3

5 c* I! [, \9 G" J8 b3 j# \end" n7 g) G6 K5 b& G0 W
% ]5 o3 K7 m6 m) V
;;run time procedures
8 g0 e0 n& |0 I+ {- v" J$ w
8 ]. e, R6 s6 M6 o- I; ], \& c5 jto go1 Q3 T- [( f# Y0 _7 ?0 Q

9 Y3 s$ R2 G: F& @ask turtles [do-business]
( s! ]8 s  o% v$ u6 J" x# k9 l
end* m3 w" v- q; U/ x' ^
9 {+ J& g& O# }) s: r# l1 D
to do-business 0 Y; u4 F" O) E( H4 o; C* G, P
2 ?9 Q! H4 _5 C! P, \

+ v( J; D$ ^' L* T. j& B$ h: Vrt random 360
5 w+ i4 S' G7 I! x
. N  b* Q9 h! d' `! b* R
fd 1

' W" ]: F3 ]! b$ U  q0 _7 r# {& ^' Y
ifelse(other turtles-here != nobody)[

1 R' C$ ?, k; b# L1 v/ ^4 D2 l# z5 }. N2 d9 E1 S# }5 S; c
set customer one-of other turtles-here
  k4 }2 Z8 n; r* @  k+ r" @; i
, Y* y; @1 A$ Z: y
;; set [customer] of customer myself
1 v1 h3 O) @. n8 L8 U
" w: c9 i9 l0 h0 N4 s
set [trade-record-one] of self item (([who] of customer) - 1); B& o2 `* v) x$ r( c
[trade-record-all]of self
5 A% ]9 K! w1 G% ^: [6 d9 C! r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 v* A0 z% d3 W7 w& ], ~3 ]* |5 W# u. K
set [trade-record-one] of customer item (([who] of self) - 1)( O! S% }4 V8 J1 A6 ?  l
[trade-record-all]of customer

# }! `5 |/ x  Z' T. ^5 c) Q" u5 G% P1 p$ V$ |2 M1 x( x- n7 W5 [& R. i
set [trade-record-one-len] of self length [trade-record-one] of self
; ~( C' H, A( \5 D+ H3 q- B" @, ^

1 u0 K: n) o: C4 wset trade-record-current( list (timer) (random money-upper-limit))

- |4 _3 n6 e  E& J$ X
: D4 I9 v% j9 L& p4 _0 d9 rask self [do-trust]" o( |% K# p4 [6 P' P
;;
先求ij的信任度
( d9 ^9 V, c. ~# d
. u7 p8 X+ \- B. P' U7 ^) ^if ([trust-ok] of self)
& j# H9 n; V: }, M9 [5 s/ J;;
根据ij的信任度来决定是否与j进行交易[  a- n) ?/ F" c- @9 V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( {; I7 i" R5 m& X

( ^( n# N* k" k3 E% _! n[
& n5 x% `$ S% L
, v" o- d" [- o. v& O! I; P
do-trade

2 j& H' b( M* T
1 w; `8 P' z) B4 vupdate-credibility-ijl

9 M( M: w2 N) Q" r4 Z+ x2 y+ s, x$ H& S! R/ w2 S7 x4 a) N( ^# |' E
update-credibility-list1 v) F4 T; u5 g3 D1 q5 {4 {
- a+ D9 }( O6 n0 z; B& P9 B

6 p, ?  t: C8 _" v$ }; N" wupdate-global-reputation-list
1 t# P) i6 h6 T1 d' Q; `# z. _; \4 X" w) G

2 \% J5 |: a- wpoll-class
# H1 v& Q  o4 a4 L0 H" I* z: }' r
! O8 f( ?% l' j: [7 d( g) A4 G
get-color

% A) l5 p* C8 Y2 c/ [
; @( q. s# s( a3 B- c4 _5 S]]! E. g9 {0 ]8 d1 l9 s- w
4 ]( c" ]+ o0 E) x' b& X6 x
;;
如果所得的信任度满足条件,则进行交易
; w! P6 }  u- i, N- \" E& K  u& \3 O; p( ?  f) U9 Q4 W0 y
[
& E8 e+ m# y& o8 f
6 k6 y! O( {  q# K
rt random 360

9 O9 o$ o: m% }5 `2 M  K' g0 M8 q
, L4 r" ^: Z1 a  Efd 1
3 m7 `9 o( z* b1 L7 j; h
6 M6 @9 U8 k% ]3 w/ E
]
; F, S( o. i; Q) R
3 y8 M+ I  n/ R4 L- K
end

' Q$ r* S% r- ~! U. V# w
) r$ h0 s/ O+ i% V+ Z: ^0 Hto do-trust + @. ~7 }$ ]$ F8 e& {% P
set trust-ok False* G8 H. c6 l) @
6 e( c9 m! C- U7 E/ `

) h1 f4 p) t% z9 Klet max-trade-times 0
( c# H7 O* Y2 |; eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 V2 o( U9 c: d2 @6 x, d+ Q
let max-trade-money 04 I6 H+ {& j, O% t9 O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* k- ?; H/ ?: l' h; t1 A# x0 `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 ^9 K; B  U2 z6 L$ u" ?  c, Y# D5 X# v# Y' a* V/ C2 ?
' L6 M! S6 @! G* k9 d
get-global-proportion- n$ h% f& ?+ ?
let trust-value5 x+ Y( f! ~; {% I$ j
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)

' a* _6 x! {' O/ y" e. A% Wif(trust-value > trade-trust-value)
3 p; M1 f4 J7 ^( G6 \) g* j[set trust-ok true]
& A+ J; |7 ~7 L9 X1 Cend
# O3 D" p2 h6 O& o3 S# g/ C4 P' Q$ p$ V' Z% n- N; |5 v
to get-global-proportion: Y* p5 K& W, h8 x) ?9 C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' g. h9 E" I' t; q[set global-proportion 0]$ q/ n2 Z( h) t
[let i 0: x6 L# W) D$ @; i  z
let sum-money 0
5 V0 E; {5 E/ P" t. Rwhile[ i < people]; C1 J0 I2 t0 a$ k" M5 J7 i7 d7 H) N
[) G* W5 W% [  u/ _
if( length (item i! l  A1 R. L6 e- S$ c
[trade-record-all] of customer) > 3 )

) `2 b  n  ~6 F  C1 t: n& q9 c7 R. C[
# b+ N) F, a1 g8 vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 O/ {" Y8 u6 u8 d, l7 d- g]  [9 }$ E) f/ l3 l' |2 J+ r  T
]+ l9 J8 G, g* }( x% c  M
let j 0, c4 w: }1 J6 T  w
let note 0! @( C, T# ^* F. A2 H
while[ j < people]& ]9 C2 _: x2 H. H) T
[
% r& I0 i- j3 U9 uif( length (item i% f& G) r# w0 ?3 R( ?
[trade-record-all] of customer) > 3 )
+ A! Q# s" y9 b% ^3 ?
[  b/ E, t3 E. J) w- w+ }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- x0 f$ U* _5 L9 d  L8 {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 W) O' G) U$ n* A, Z. A7 M0 }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( ~0 ~. ^! N2 x" F
]" J# l( }6 B" J& e& H# o0 r
]
; H2 R9 R/ U" T4 s  uset global-proportion note
2 R) }- j- P3 l$ \]6 A7 h  n4 A4 ]  O
end. c1 U" v5 e, J' ?
6 e: _% R/ J3 ?2 ]; |
to do-trade
0 R$ {' L7 K. F;;
这个过程实际上是给双方作出评价的过程$ h' q# Q. G! n. P9 ?" n$ m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 p7 |4 @& E4 z) t) d$ ^5 a* ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 H. z- S- l9 q1 t' B7 @# _, ?set trade-record-current lput(timer) trade-record-current
& l/ A9 O5 p* a, L6 I8 ^# ^;;
评价时间# f+ z0 t" Q6 }# D8 M2 O
ask myself [
/ e( d- [! }! J& x6 e8 y2 ^0 cupdate-local-reputation" O& A$ F* n) c0 P( ]$ r
set trade-record-current lput([local-reputation] of myself) trade-record-current5 U$ M/ P$ a. N/ }% S( f0 L% L  ^
]) }! H0 x' v: Y; Z6 K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 G* }! L7 Q- J5 p0 V
;;
将此次交易的记录加入到trade-record-one8 a3 i1 b: y0 K2 S) b% `# Q  c' Y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& y4 X2 T* Y5 \6 k) {) J9 Y
let note (item 2 trade-record-current )# d$ M) [% n4 C: j" s
set trade-record-current
; P# w! Q( a, [! a# v(replace-item 2 trade-record-current (item 3 trade-record-current))
8 Y7 W7 S) x% O  [  ?8 c3 r
set trade-record-current
# x8 S2 l6 I! S- h# H7 J: }(replace-item 3 trade-record-current note)- W7 u6 |( \+ M, R% Z3 L6 x
7 p5 Z+ K7 O7 v6 U

/ j& b7 P+ A. j$ h" |( ?ask customer [
! H# T$ [2 P& S- F9 eupdate-local-reputation
' c2 A, s4 b. h5 V* ?% Q4 q9 j$ G3 Hset trade-record-current
7 x: M2 F/ {$ Z3 G0 j9 O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# w1 }0 {$ v& P]
1 N4 Z- \9 t" n- X2 `0 R. l" Q- G6 T( l1 Q
7 u7 I; G  P3 I5 r$ I* l: F6 r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( a7 ?0 Q% B5 q: [2 C( S5 G

* b  c4 F+ v" B8 Y5 \) Q7 yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! f, H& J$ ^7 D, e  W5 f
;;
将此次交易的记录加入到customertrade-record-all, T) ~' ^2 i. P( d0 c" O: y
end
2 Y/ o6 Y( W$ }- |9 F. c  m# m2 R9 |" x* o# @7 n+ Y
to update-local-reputation
/ `/ ]3 m# L5 aset [trade-record-one-len] of myself length [trade-record-one] of myself7 K& m3 o* l1 Z0 ^- {2 m

2 i7 ^* ~+ Z* L4 }9 r* v# N6 n- O: d$ R& N* _
;;if [trade-record-one-len] of myself > 3

0 _7 x# j, ~8 p, A+ Kupdate-neighbor-total
2 t( v4 M# [% r;;
更新邻居节点的数目,在此进行
. U- o+ o' [9 y3 t" Y0 jlet i 38 G, e. d& O0 G' s: _3 I4 V4 l, a
let sum-time 0  D6 `$ L0 |, H( K* C9 i
while[i < [trade-record-one-len] of myself]1 w& T1 U1 P# t
[+ c8 _# L3 V8 i2 W) c# ]1 M) Z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" T7 R8 F0 U9 Iset i- d: q8 t5 O+ I0 S' c
( i + 1)
* k+ X2 ]  J, m" h; D
]" Y4 h5 A: A+ V, [* _
let j 3
) P) f! t6 Q  l; q: ^+ u* w2 alet sum-money 0
% H& q0 }! R1 Z6 pwhile[j < [trade-record-one-len] of myself]# o$ L) Y: t4 e' U3 N* Z. q0 H
[
+ Q) W. J' }. a% Zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; |, @/ d6 u0 C  uset j2 G; `7 M+ y$ c
( j + 1)
( C9 A( r9 t3 W, I
]
- {; A9 E. \2 `7 h% Ulet k 3* @3 i  f/ n- R# n. u" L: X5 n
let power 0
7 H7 w. Q( f: F& w/ Glet local 0
3 E; \6 y( t# ~  \while [k <[trade-record-one-len] of myself]' ~2 _, h' c& A1 T2 H* y7 n+ I7 a; {
[
/ T' N; U6 S' M' |  P" y# |% Q  uset 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)
0 [/ W6 Q/ e" k- `) D0 q) m) Pset k (k + 1)
8 c/ {6 M$ a9 \! N( V- ]' [9 f]/ t& t' V" N7 h6 C! d. J
set [local-reputation] of myself (local). c/ Q! ?. y! U; n2 T& }
end
: u+ c9 L3 S/ ^  Z
+ @$ T2 u8 Q% F; A8 l$ sto update-neighbor-total# X# d" ]& p! @

" A9 }) s; H: e$ `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! b/ \# f, P( x) _' D2 v' W8 ]; }) y6 @- p+ b; E4 J

5 e7 E1 k! I. V3 l5 m; Pend
  R/ n8 u6 D, b* X# c7 m& U) g5 A1 z3 V/ O
to update-credibility-ijl
( V+ {6 T1 Q. x& d( F. R, Q
7 J7 {5 U, |/ v;;
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。
8 n" `) K) n% u' W1 ]let l 02 q+ [; [, W: J: n
while[ l < people ]+ W- k5 f. Q8 _( ~1 g+ n! e& E4 Y
;;
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: P4 }% D  b4 V! j# F4 s
[. r1 s! T  r( c* B8 I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 S9 s' w4 u1 f( K/ r+ ]/ W
if (trade-record-one-j-l-len > 3)
$ I) ^& U& V# H4 C* X[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
; Q7 [0 Z/ T0 g# U( O% Vlet i 33 ^* w/ G1 z: P- T8 P3 ?9 r7 A% z# M) h
let sum-time 0
5 T3 N+ N: Y4 o5 X5 y8 E7 Ewhile[i < trade-record-one-len]  ?9 Z" T6 `6 q" o
[6 g9 M% W  x; b  c! s  g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: B0 {: j5 @- M: d3 Xset i3 v6 q# b; J: G; E9 s$ y
( i + 1)
" F: {+ ]4 z$ ~% ^- H
]  Y/ e$ U4 Y# B+ R# Z2 `0 l
let credibility-i-j-l 0( ?; m$ R7 W/ w+ @1 c6 o
;;i
评价(jjl的评价)( z! M! J) u2 e4 D
let j 3& C+ T8 u7 x. q4 w( z
let k 4  k2 G  n- D/ N- P+ D: Y8 t: Y( T0 U. _  C
while[j < trade-record-one-len]
" Z6 F( |/ O* V$ l. y4 C[( k6 e2 E- _% M) z; E3 v
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
. {( u; l+ E; I* x2 v5 w1 K3 cset 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). s: X& ?5 k# i* {5 K0 p. U
set j
$ O2 K9 ?# ?9 i  _, Z+ _4 r+ o( j + 1)
, J1 v, J3 a# y4 ~* v" S
]
+ F  M) K' w$ P# Y2 d) jset [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' `0 G: N  V5 {5 n; n# Q
3 f* V) u. }+ e' x% q/ }

: k1 q) W7 s/ Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' V! y) U1 O3 X2 ]- G: D. O
;;
及时更新il的评价质量的评价7 h( `7 j* E4 \" [6 C, A4 T0 G# ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, C5 d) O# r4 [# i: rset l (l + 1)
4 ^- \/ e, @" g]: D& [( J+ B% O- m' N2 W6 p; D" S
end
% I8 N/ D: o1 T# p& _+ L. U3 D- w, _) }1 v$ c# `3 V
to update-credibility-list
! `2 b- m) B) W- mlet i 0
  d, ]' p* X0 a& Qwhile[i < people]# Y! T0 P( h& G2 j% y
[  G8 y, C1 N5 ?9 q3 D3 y8 o# P
let j 08 V( m) ?- N0 H# W5 j9 ?' ~
let note 01 \" r  l/ ]' p2 n/ o; J5 n) r
let k 08 s' \8 }) a' ~
;;
计作出过评价的邻居节点的数目3 w3 @" u$ i' w
while[j < people]
3 ]( a; b( y3 N; D[, j/ K9 q$ B; h7 Q- C
if (item j( [credibility] of turtle (i + 1)) != -1)8 S" p% k: ^9 f) I9 q0 E# K6 j
;;
判断是否给本turtle的评价质量做出过评价的节点
1 |8 s4 {3 u! R$ L[set note (note + item j ([credibility]of turtle (i + 1)))* X- p6 u0 l; j/ P" j* H
;;*(exp (-(people - 2)))/(people - 2))]
- m) c: `1 E& q5 G8 V$ q
set k (k + 1); G4 h3 Y# z3 b6 h
]( w# n2 |3 i: S$ f3 C6 E
set j (j + 1)
! C( s; a/ ^% z' P( N9 j4 c+ g- C]1 A) d! l+ U! f* L
set note (note *(exp (- (1 / k)))/ k)
; x: G8 ]9 e( D4 @; |3 M1 o8 \+ oset credibility-list (replace-item i credibility-list note)1 r2 a+ ]- N. @0 ]& e1 m$ }! R6 V9 K
set i (i + 1)4 T. S0 T! l9 H, a5 a
]
- r* P! K0 `# `, Kend+ |6 U7 a' M" T

( l' @0 N3 L7 V- M2 Kto update-global-reputation-list
1 b2 D0 e) f; a3 xlet j 0# G# T! }: w1 S7 w: ?8 o
while[j < people]
9 D6 w, ^( T$ }: p' E5 i/ {' W[
* d; n  l$ B1 S; E2 Z4 U6 G& jlet new 0, H$ b" [$ Q1 b! i. B. o) ~
;;
暂存新的一个全局声誉6 X/ b5 W+ ?4 h7 w( p. O1 w
let i 0
" N1 ?- r+ P+ `3 u/ Z( qlet sum-money 0
1 q! e7 g- h' G, d% ]) rlet credibility-money 0
! d7 K; s9 f; H2 D9 _9 [while [i < people]" ~+ ^1 h7 g9 N1 S! K) r; ^
[
' z! K' X& L$ G1 lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% `0 D/ n- c$ @% P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 W5 U) n2 R. Z1 n$ B; P  V" Eset i (i + 1)
2 a, p' `, J" X$ J]$ v1 n" p; c- e
let k 0* F7 ~/ C+ @, O+ E1 n0 W
let new1 0# y, ?* y5 t- D. m5 X0 \$ B* b
while [k < people]
9 |; c, O* q8 \: X- c; \6 @- \! }[
7 t- H4 R) m  q* n- Q+ Wset 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) Y' [" v- k9 m) c* E  d* r  _
set k (k + 1)
7 q4 n6 N8 q: F) k' S( a7 u]9 Q1 K: h4 c( j- Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% ^/ X1 Z# P6 }  ?; |set global-reputation-list (replace-item j global-reputation-list new)
3 y/ c% J  d" z8 g% e% J! w8 _set j (j + 1)
* ?/ b4 Z8 {/ Q]
* c( j: E7 C: {# `7 y( M) _9 Z6 \end. \$ T1 C/ T7 K
* ^4 L5 f. _3 B2 n& T
5 d% {! ~7 w! @, }( P5 s2 r

! f8 r% M( u* V3 K! |9 I7 kto get-color3 f2 F: l- q- m% J' `% r8 {

1 @) A9 _) h' {) |set color blue

7 C9 k1 E; P% f% O+ z% Dend3 t& m" p1 Q. {/ V$ z. ~% r3 f! T

6 z" A; x: y4 [  a3 @' Xto poll-class# d2 U, U1 R4 k* D
end
& {+ u) g  ?) b9 M  |- R  I
5 G( g6 u" p/ t& c  Yto setup-plot16 P3 e# L3 A7 [: {' x* N

8 N  ~" s" W2 W- M# l2 \: `6 Mset-current-plot "Trends-of-Local-reputation"
3 K, u5 `2 d% w. [
6 H+ u; H7 {. d# `
set-plot-x-range 0 xmax
! F1 y* k& U9 }7 z* n

; _. z; X) ^2 k0 Lset-plot-y-range 0.0 ymax
! f/ M; c; J4 t' |$ @* i
end
' h6 b1 x; y; t1 G& z9 Z
. E% a: N2 x& L/ f8 H2 n$ Mto setup-plot2% y2 O/ N" a2 X) ]  S
. q1 p0 ^3 m) B% \$ J
set-current-plot "Trends-of-global-reputation"
1 Z' Q5 k. \$ d" k* D  N

, J3 h# g8 O( N# i9 {1 @set-plot-x-range 0 xmax
) l/ w8 @2 F' ~* b  k
  c% G. D( x; \) a: O. ]$ g7 J
set-plot-y-range 0.0 ymax
! X7 l# }' i1 }7 F
end) ^+ r% ^: Z# o! o1 u5 A
: ~  H* r. O  B9 q
to setup-plot3
- T/ ?% h6 y5 w- J1 q( s
- H+ {8 c. H4 d4 q7 e/ nset-current-plot "Trends-of-credibility"
  O8 X3 I# Y& p4 ?2 C5 D
  N+ I7 X# d2 U( R
set-plot-x-range 0 xmax
: Y- @- v3 _8 a4 u6 |

& f2 u3 ^( V* P# R1 pset-plot-y-range 0.0 ymax

* r* R. z3 P; qend
/ Y9 |8 L3 c: n! H( z0 E/ p
/ \* u5 V0 V& }2 k+ Z% c" zto do-plots* J. @4 B) G9 v& O4 D  X: J
set-current-plot "Trends-of-Local-reputation"8 L0 \! C, u# }! A, A
set-current-plot-pen "Honest service"+ }  m7 Y. Y7 a3 y4 r% S9 _/ c8 N
end: l2 i. Y* z3 B& O5 I

" _4 T% j3 V" f' {[ 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.# I+ D- S9 I9 \+ a( l

9 q: u. Z6 E8 J  ?* s/ z9 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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