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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:/ b. r) N, ^/ F# Z* z/ N
to do-business : G, w, Q! F- V: |* H$ J
rt random 360
0 _6 @, X& q/ [; y7 q  i5 ~ fd 1
. W3 K, H( l7 n+ a ifelse(other turtles-here != nobody)[
% s' [7 f5 Z( ?  H* l   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 B- `3 ?  G4 v& y: I   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & Z  G  p: v; y) M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 L, L7 V+ ^) Z+ w* a2 y   set [trade-record-one-len] of self length [trade-record-one] of self9 Y' S7 O( i% d! |: t2 @+ U  h1 U
   set trade-record-current( list (timer) (random money-upper-limit))* a' t4 z& v. c: N1 {# y) b
8 x: t7 n4 n* d+ }8 D$ B
问题的提示如下:
5 g6 Z4 p0 `- y+ Q7 A- ]2 B" j$ t7 R
$ Q  E! F5 H# ?! I0 S$ ~error while turtle 50 running OF in procedure DO-BUSINESS5 y; R8 E& g' d" X2 I
  called by procedure GO
8 s# ^! v) G3 X  ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; n7 ]' Q' j( ]3 O* U! D
(halted running of go)
  u4 l  N9 ], |3 {  e" c9 \  n+ B2 Z0 G$ A( Y# 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~~8 S$ I/ q% m" R# v, n
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
0 ?* S, b* \3 v& T# W" W" W1 Oglobals[5 [4 h" g2 @: i
xmax/ e( s, _7 @( B4 r' Y/ b* \! Q
ymax+ ]  D7 Z. g. v* }
global-reputation-list
: w4 m6 s# \  H+ V; F9 Z  C3 o9 }6 ?5 ?! L* u
;;
每一个turtle的全局声誉都存在此LIST
2 ~% j' J, X% ]5 C5 jcredibility-list
1 t8 l6 d8 {( S5 Q0 ~% j;;
每一个turtle的评价可信度9 _- e& f! [1 _2 M7 Z
honest-service8 w0 O3 Z0 s' J& e: o) L
unhonest-service- R- R& \) S. s- E
oscillation
* S7 B9 v5 `( v7 u; g0 O5 orand-dynamic
( k$ ^3 V. `0 p  r]( Q0 @8 m# S$ p5 h1 F2 B( u

" e1 J7 p. ^. ^# z4 V6 eturtles-own[% c2 [; ^; w) h: N* s
trade-record-all; g- a8 X! v6 D) D9 j0 Z* p! t
;;a list of lists,
trade-record-one组成
" a+ H7 l3 x$ t; U  Wtrade-record-one, _: T1 w  i, a  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8 W9 Y3 X! y, T9 T' U' E$ [% ~

: o8 p, V8 U+ Y3 {9 V6 |;;[
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]]" o" q! t/ F0 \, F2 [" P2 `
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]6 h& C! e$ ?: T2 G! y' i6 K: R5 [- `
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list8 k( j. Q7 r& Q+ }2 o8 h
neighbor-total+ H( Y2 V1 b, N. g' J5 s& j
;;
记录该turtle的邻居节点的数目2 Q. N# U$ }% M6 l
trade-time
2 O& h. ]  T  Y! m% l4 W;;
当前发生交易的turtle的交易时间: i( j$ ~/ d4 t
appraise-give
  p3 Q; D/ l5 Y! |4 h! y;;
当前发生交易时给出的评价2 R( q3 c8 Q# X/ z1 P/ J
appraise-receive
  l0 P: m$ J  z: \0 v& f  ~;;
当前发生交易时收到的评价. u( h6 z" y6 V( W! |4 T3 A
appraise-time5 U- E: M- P6 N( O' n
;;
当前发生交易时的评价时间
* ?+ I* ~5 k2 C; e; C. ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 m, G1 t- e9 t5 E4 j: ntrade-times-total
  K. X& z! [8 P( f" ^) {- V;;
与当前turtle的交易总次数
) E: t8 f# g- s- Ktrade-money-total6 }* l3 b# r% f* b7 Q
;;
与当前turtle的交易总金额% m  v( `/ b' `  I9 q
local-reputation3 M2 ?+ j* y- S2 h' p+ U. \
global-reputation
4 n5 f) ?' ~0 V) C  lcredibility
( Y$ [* F) Z/ S;;
评价可信度,每次交易后都需要更新
: I! I! ?! d! v+ o6 u5 K9 Z8 d9 ]credibility-all3 t# V  B4 P# k3 ^
;;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  c7 D3 ^( e9 b" S/ w

% v' \, r' q4 o/ p+ 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
, Q- x( Y4 [5 d: ccredibility-one( W4 w) L% t, s1 w* l' e
;;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$ A2 q! f2 t' r/ [4 X
global-proportion; C5 |4 K9 z# L) l5 g
customer
" x8 M9 H. |, B* P3 @( _7 Ecustomer-no
+ I2 f. S+ q8 K, ^( qtrust-ok
$ `1 o# o( \+ M- \) {6 C- L; T1 @trade-record-one-len;;trade-record-one的长度
" B7 E2 P: D  h]
( n3 E1 Z7 }0 _" c% R6 ^! E- N4 s; O% V0 c* [3 R
;;setup procedure+ k) ]. Y" P' ]1 V+ a  Q

6 H4 M. K  W- n" \7 ?to setup* \6 |% ]0 S# B' H* I1 T; X+ x

6 @9 C+ z! H* w2 J7 k0 Hca

) ?7 ?; k: X$ P3 Q$ D4 P" j% ~; q: V+ R# P2 j
initialize-settings
; l, w' e9 K( l3 Y6 f, {
1 ~( R* z% N0 J, N
crt people [setup-turtles]
/ }. u2 l% d* q; |3 P* S

+ [; {3 [! K1 R+ \% Treset-timer
+ I5 B( }4 i" U( ^7 A' B/ a9 K% r! o3 b
% C! U) e% M* v9 c  [
poll-class

( ]' e2 S' ]. W! y
+ [0 C; |+ S! g2 f' Nsetup-plots

8 G! `8 v5 M- I  i7 Y1 t
* v2 x1 L1 R0 m0 k! b- sdo-plots
9 ?( p& s4 A/ ~: B- p# H" H
end: t$ L$ R" w, e. S( f( W

# S" L0 {! c6 u& v1 tto initialize-settings% Q3 d/ ^/ w% c/ l) Y7 ]  X2 k

$ f6 G7 j, S. x. d& y* U& }! y/ Tset global-reputation-list []
, k3 F# D+ h7 X1 _! y! S2 V6 k5 q

' j" k$ V! u7 K0 k2 Wset credibility-list n-values people [0.5]
6 X' P& e9 C# D2 h2 Z) G
5 _" P: O2 J/ G5 ~0 O2 }8 k
set honest-service 0
$ q+ ~" R( ~& C
: K0 j6 L3 }* {/ S1 D
set unhonest-service 0
& ]7 N  e, O& z  [( [, u5 Q

+ t  E% q( n+ F& {  k4 g( {set oscillation 0
7 Q7 Q- v. n" a  M
% w4 g; i% M: d( e
set rand-dynamic 0

/ j" z- u0 O) j- yend( b8 D, [% B1 w6 d' ~* d. @/ j

9 P) U% B- Q7 M: }to setup-turtles
# h8 Q" Y8 n, ]' C5 x0 ~set shape "person"
& {" m4 W* T, D( bsetxy random-xcor random-ycor$ ~4 R- @6 h' s
set trade-record-one []
! p4 t. Y. l7 |5 K4 v

) v3 D  i& a& J+ o: R8 E1 }set trade-record-all n-values people [(list (? + 1) 0 0)] ' j8 L( t3 c! f6 c1 |9 J) ]/ ~

7 X& P1 W+ H8 K! k. Pset trade-record-current []
! x7 K6 }6 y! k6 O" O+ ?set credibility-receive []5 n. z; R4 Q% _* m# j
set local-reputation 0.5' o/ w+ \6 H% Q3 z# r
set neighbor-total 0
! h; n( f; G- a; T4 fset trade-times-total 0
9 G" j# M4 s3 K7 \0 z4 n$ g( Jset trade-money-total 06 g$ V1 j. J" w6 |
set customer nobody
8 e  x% n) q/ Z& Mset credibility-all n-values people [creat-credibility]
+ D) x; E7 T+ O0 b  W: @. z6 X' kset credibility n-values people [-1]
( g$ G5 }: c, ^$ j3 E5 l. v& G) lget-color
' k: [* K% @' z% y* I
8 c1 x) R8 m( x8 b: d1 B
end$ m* w9 q! s* a% M: i4 F7 w

* X5 t( z: l' m0 r. ~3 _, c) @* {% nto-report creat-credibility( d1 b: p/ [) e- V! _5 }% ^
report n-values people [0.5]% l9 H+ y9 W( l  b, J. `
end
: P' ?% _% c/ e0 g1 Z
" g' E  z: A& L( {( r0 fto setup-plots$ |$ r1 ?% v; h2 ]( o" n! l
) p# _4 F2 i7 h1 D' R
set xmax 30

6 D; m  g9 j& k# _; X3 P7 S- W8 N' T- W! c- g0 w. @- Y' v4 z# z1 E7 E* v! v
set ymax 1.0
# m( Y7 W+ u) E

/ r5 _1 t9 `; `! l) |* Vclear-all-plots
# d7 t& k: U# s9 N  D, t9 F) O4 y
* d  Z3 k, T; e6 L" E$ H! k
setup-plot1
$ _' _: ]: ?- T0 K

' ]; H# L! S/ i  c* tsetup-plot2

0 }" L) l- \# u5 b9 ~+ Z% o
3 j6 z4 t9 `- ?setup-plot3

& l! J! U' b. I7 a+ t" f6 send
0 t' [% p% B. O$ L! s# f$ t  O
5 d: P- G% t: F& R  n: H;;run time procedures
. X* ^8 ~+ Z, D" |4 D/ z
4 N' A; P9 R9 D5 ^& l' Yto go1 R0 ]' Z1 P6 _9 V/ k4 r
% D. `; A: w9 v7 H
ask turtles [do-business]

/ a# o, h* D! p$ c3 x7 S8 Yend
; [, S3 J* \: q9 [- M. {  v3 l  b2 o' d
to do-business
8 E$ e. d( {4 Q, R$ k

2 m+ X9 {7 O1 k8 Y6 W
. p- K( F( b: H9 q/ p' h9 Mrt random 360

8 w( O" q1 I$ M" C' `
; f6 l) N' Q( C; @. X2 Q! Rfd 1

9 z- N. Z* _0 i$ S6 N) m! Z' U2 s6 N' f: u2 Y' z2 n
ifelse(other turtles-here != nobody)[

+ f; b) l. Y" h; {0 @! Y/ O
. P% O5 Z/ t: y  Z" [set customer one-of other turtles-here
8 S, s& P$ @. x1 H" x; W# }" X+ W

1 L3 h# r+ E! W5 \( F, N4 d5 z0 [;; set [customer] of customer myself
, C2 p5 I9 C+ }' E- |/ @, ~
9 m( n- I: X! k- k, n) Q& O
set [trade-record-one] of self item (([who] of customer) - 1)' F, {6 T* u+ B9 K
[trade-record-all]of self4 i; ~  s9 B7 @$ \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 ?) b9 p! T# _+ `2 `( Y+ i  z/ t8 p' M
set [trade-record-one] of customer item (([who] of self) - 1); q' P# e& [3 |% D" H
[trade-record-all]of customer
# t! z% E9 A7 ?3 X. @( o( h

2 m' ~$ l' v; }; g, rset [trade-record-one-len] of self length [trade-record-one] of self
! U3 c; W& W4 s$ W3 ]9 Q( ~
2 |' O) y' w: }
set trade-record-current( list (timer) (random money-upper-limit))

. D7 ~" z" w& }4 z3 Y9 R/ {
) v4 B* b/ I$ {' U$ F' eask self [do-trust]
8 E7 f' [0 q* G+ };;
先求ij的信任度
: q4 M. M& N% s  u6 M8 B% J* P- c. s! E+ F9 }$ T
if ([trust-ok] of self)
4 [9 g- \, ~& E6 t;;
根据ij的信任度来决定是否与j进行交易[) z! K0 L' z, M- [: x* k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, |5 j9 A$ s) g1 a& C' t% a* u3 A3 J8 ^+ D, r: N- v
[

* ~* X# Z" Z; C" }4 L: u: z4 f" O# |7 P4 U
do-trade
* y% Z% @, F; x) ?  d! [* U8 O& ?
. `9 P( }% f! `1 \' Z
update-credibility-ijl
/ o' ]- p& d) R
. P' p0 n* \8 V* O$ H
update-credibility-list3 u, ~- e4 K! R$ v# @$ g7 {

0 G8 Y1 d1 g+ e% w) {6 `/ ^5 v
& C% K& w' z9 r' y& V% b/ z' T9 Jupdate-global-reputation-list

9 R& t" j0 C( A& o+ \& m5 f* B! \7 K2 r( Z) u2 w. @0 ~* H
poll-class

$ T2 t/ z$ U9 ~+ u: A
; E$ ^7 s9 n( kget-color
8 g3 u0 r- e- ?
( N  T  T! t# z% d" e- r( [7 ?
]]
7 F) h' g1 I% c; s; }/ K  ?/ O1 ]- N8 D( r) U) |+ y- I
;;
如果所得的信任度满足条件,则进行交易8 M$ j2 M& u* `8 {/ E- E, e
8 G# ]# P& G& P5 Q0 d$ H( J
[
, n* U  D/ T% o2 _) Q4 c
, e1 b* Z6 j5 }" r; x
rt random 360
$ |% F/ I5 n, I( o

; j0 R; A# J5 Q& W1 L) ^4 Xfd 1
8 }( O% z1 h" }" Q3 b* Y& w
& ]# g+ x- o: h1 b4 T
]

% L' S8 {; S6 j) b/ ?) e! S; R4 q
end

' s' e( g+ b4 g
1 b+ Z- A8 r) \0 u1 A& M* dto do-trust
& l, G2 |, Z% Z5 nset trust-ok False
# K9 S3 r- b/ q9 `! }- Q- q, Y0 u, n

0 l1 T$ U' e9 P+ Ilet max-trade-times 0
" n# s& w. _3 e5 a$ Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 F7 `, \  Q% O5 S9 Hlet max-trade-money 0
: ^3 K* O4 S$ W) K: {( F6 eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. b+ X4 J7 W# T$ [( K* g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ C6 B; }9 @* ~! m
" }, k+ c) n& ^1 h8 z) X8 C
/ O, j! B% Z. Q1 W
get-global-proportion! B! V3 l+ H) {2 k4 H2 o
let trust-value( o6 v0 ^6 v' r2 @' ]
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)
/ c! h1 Q8 [6 z; D) {, Q5 C( j
if(trust-value > trade-trust-value)* }  y, n/ G+ O% D1 T
[set trust-ok true]
/ v; o- C2 A/ S# Y! d4 U, _' I9 Iend
1 Z" w# v1 l! y  X; l
$ B& |! l% d$ D. ~to get-global-proportion
% k* w) m. }# Q+ t# D; Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* O# x* }5 `3 I; u% \) h[set global-proportion 0]
$ s- P. ^# c4 x" j# b: z[let i 09 P$ w$ M0 t* B
let sum-money 04 [( y* n' _5 n, |
while[ i < people]
# o9 q$ ^6 U" D[
& n3 o* i6 {5 E$ g  Dif( length (item i
" }# G" o3 L7 ]2 _6 F' I1 Q4 k2 v[trade-record-all] of customer) > 3 )
7 a% W1 F+ W/ n, Q: c0 b
[
* l# G7 M* Q9 h, ?5 f4 J" n% S$ jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))# s- ?( r. `; m( o2 v' i
]! |% F! @+ D) s1 r, N6 u# v/ m6 V
]- E9 M0 C0 E' x( A
let j 0
1 Q5 V7 Q& |( x6 blet note 0
: n1 Q3 ]; B& F' A/ iwhile[ j < people]
& l6 N) `- [$ M# H2 V0 N( B[) @1 Z( i: f) P' W
if( length (item i/ B: x; S  Q* F, B. D% \% \+ Q
[trade-record-all] of customer) > 3 )
) Y6 L" Q9 }5 T6 l
[/ A4 G8 L2 K9 B3 a( {8 `9 C9 b6 k
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! |2 V: @5 t* H; q' I- i! [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 g; ^! `2 I2 h! ^0 d! g! l! A/ K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. y8 U& C) D) K" d
]" P/ j& A! x5 x2 p: N, V
]! S. }* u3 E# x6 \( C
set global-proportion note
2 K0 P0 p+ D8 ?: T4 ~" p]
" V" `3 q( e9 L6 i; V8 Send
. ^# O( z! h  @$ l. `$ N6 g8 Z4 ]& q
to do-trade+ h4 o" Y3 |; v5 s
;;
这个过程实际上是给双方作出评价的过程
  ^. X( i' i, o  C# q9 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) f) ]+ e  _# g7 U8 O: Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 t, r+ s! \) K" C1 ]" o
set trade-record-current lput(timer) trade-record-current
2 o3 o7 r3 P; n& Z  I/ V;;
评价时间% i. x# S  s+ a6 F6 l. K" a
ask myself [, N2 [( c3 X. v4 O
update-local-reputation' M+ z+ D: s7 s! m+ w
set trade-record-current lput([local-reputation] of myself) trade-record-current4 L8 ]7 }: ?4 y6 j( Z
]4 r! D) Q5 n1 _$ h$ m- u: c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) Y  l" E! m, ~5 v* k; ]+ l, d
;;
将此次交易的记录加入到trade-record-one
2 H+ }2 j* S5 L4 H7 zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& R& h8 @6 x& X' n, j4 M2 W3 Xlet note (item 2 trade-record-current )
7 g# B/ ^+ {8 }7 h9 Kset trade-record-current6 T" U+ l+ U4 A1 ]
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 Y9 @' f7 \, a
set trade-record-current
6 ~. j+ O3 ^9 O  ]1 Y0 R(replace-item 3 trade-record-current note)6 g7 b" v' ^) w1 T
9 c. M0 g0 k0 w8 O( F" u  E; B

( b) X4 _" h$ o- M! J2 G" J) Oask customer [
0 B6 D! p( X9 \( O! Gupdate-local-reputation" F6 J2 b4 I* U# w
set trade-record-current
: F  K4 d: n9 G4 }! i& h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ }. ?" _, V, m2 ^3 ^
]
8 b" l/ ?7 v' F$ f; W
  u( ~$ t% ]; C7 W3 }. b7 @

8 x/ _/ {+ C: ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: q. C& }7 W. t  }& p4 g
) N9 s' P$ L% z4 u# @# M/ v: V
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* ]! i1 }5 O9 V2 }! b8 M2 w7 Y) U$ v
;;
将此次交易的记录加入到customertrade-record-all
' U0 R0 o' I2 H4 e- u0 vend
) a3 s$ z0 u, K' F. x" Y8 ]" X& N4 y0 g
to update-local-reputation
8 f. P7 u* P: ?# m) Bset [trade-record-one-len] of myself length [trade-record-one] of myself
8 }* c0 F+ p$ ^& S
" C8 j2 }" j* Y7 `- J0 B2 x; b7 [, P4 _% ?% C
;;if [trade-record-one-len] of myself > 3
; n' V  o+ e! g: @+ A: w( F
update-neighbor-total
5 E7 T- a! v, c: q% a1 D5 C;;
更新邻居节点的数目,在此进行
% R1 w+ D/ X& B  A" G+ l: Llet i 3
, D  `; d2 B! N, @! Xlet sum-time 06 B% f7 s! j6 V* m
while[i < [trade-record-one-len] of myself]
' ]/ c0 H6 _. h! [% _6 W( y[) N6 ~' m% k  Q, r- T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  [5 H% D8 C: Rset i% ~! H2 ~( D8 J) \9 w- r
( i + 1)
7 a; {, a& e$ E
]( y2 J9 F( y& H' w$ k
let j 3
0 R+ W0 S+ T& \* Y0 u. Ilet sum-money 0
" z2 s% H3 G2 Q1 {0 j0 Jwhile[j < [trade-record-one-len] of myself]
1 v2 o! b+ j1 h; A% @1 i$ r[, N' C9 c0 C7 k( m8 y
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)
5 W+ K4 L( m! m) vset j  V- T2 p2 n+ e9 o" s0 m, Y
( j + 1)
7 U6 O+ h8 I2 ?( `7 M  f" g) }
]% `7 R# M6 l. j; G4 ^- [9 ]) _
let k 39 l; ]3 Q% T0 s, \' Z
let power 0
! I: N8 d) ~; k& B. J% m" p  Qlet local 09 s# E3 N$ K8 s, K# {
while [k <[trade-record-one-len] of myself]- d  H9 s# ~9 E& @  G+ l1 v+ ^
[
% [/ @" H# S" Gset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) - k3 x, j  |5 L
set k (k + 1)
. E5 L9 {% l/ O, w9 i]
9 @& B9 f& Z* v4 J: Sset [local-reputation] of myself (local)' T1 F$ Z) X# Z* B+ B1 p4 \' r
end
# i, u- K+ k4 O$ p  i5 i0 L- z8 O' G( F1 J- Q& u1 L# e" S- R9 q
to update-neighbor-total( T# B' g  c5 o& G" ], {, D) W

" e' ^) y! o6 u' @( uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 o0 H! }0 n% o4 u; Q0 ?* }3 f/ B. ], A( h, c

5 K' ~( b. {' \7 j. A$ D) v' tend
4 U/ u9 \3 G& ]- g3 A7 L& h1 m3 B: \" d# f/ w7 B$ S- A# J
to update-credibility-ijl 0 }3 M5 c0 m7 g, F  n* k

3 l- U* ^. a- `$ }# |8 a! t" z) Q;;
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。+ p5 i" ^" ?4 u' X% N+ G
let l 0
4 a* o) r; n8 R9 h4 C' G6 y* ~while[ l < people ]
9 I1 Z* P/ I( 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
1 k, P( i) T$ N. h" h3 ^[* Y8 W, D. C0 k9 X4 C8 z. x# v- O
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 |2 O- A$ Q# ^: ~' i8 W) r! ?2 {if (trade-record-one-j-l-len > 3): ?' |# c. h9 p& C
[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
7 r3 k' @, ^. M: e& Y' Alet i 3
3 P- Z  E1 a+ u- t% d! W9 O- r/ Zlet sum-time 02 ?. Y0 ?: {: ?, u0 h5 {
while[i < trade-record-one-len]* Q+ x' l" c9 ?2 U
[  t$ v7 h( X, ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 G3 ?9 R6 x3 w
set i
2 {2 E$ @7 a$ x3 _( i + 1)

2 k. ?4 e% u  _" r1 p. B]% r0 d7 X( C: ?/ ~/ j) ?: Q# y6 V
let credibility-i-j-l 0
4 F8 v7 l  O' l;;i
评价(jjl的评价)& {; ]! Y5 E7 l+ K$ e! c7 Z
let j 3
4 `8 w1 y0 A+ Ylet k 4
! ]4 O" F& n, X3 mwhile[j < trade-record-one-len]
% B: K: O& N" O! ], y) Y, M$ F6 o[
1 |4 U: l* p# l. z- |: nwhile [((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
  I. v) v1 O& X) I7 T+ R% nset 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)) }. [( X2 H2 m1 H
set j
0 }! K9 W: Q! l6 E& a+ d, p' b( j + 1)
1 G7 J2 L: E% C
]7 t" d6 [/ a! b
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 ))9 B5 a) k1 \& c0 X- b& v
1 c( T; z# j- ~3 x3 h/ m% N

/ k3 w5 m: W3 [: ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ q4 `* N  {8 u4 ~
;;
及时更新il的评价质量的评价
( C$ Y4 {/ s" O, M: z, Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, u. X% @$ {3 A# d5 T" gset l (l + 1)5 v: x7 H) f3 i3 G" L
]" D1 a, C5 L  H" O1 w- P& k
end: H( `! O- ]$ a6 m

( N( e+ T  _! x5 k$ @7 _4 Nto update-credibility-list
/ i% G( X: P! ~- h) M  Klet i 0$ o" \3 r  r& R& d
while[i < people]& Q: |1 ~8 X: q8 z4 o0 s3 }/ S
[  v# D; U0 V+ q9 j- @4 g
let j 0
! J% M; J7 Q; _7 j9 C5 N. |! alet note 0
- v& q' h$ r/ `6 }let k 0
# A' S) L9 ]7 [. O;;
计作出过评价的邻居节点的数目
" e9 F" n8 K) @# P' i8 }, }while[j < people]" H& S, m6 D8 R% G0 U: C" ~
[
9 {, q$ M; ]" j$ i9 u: T2 qif (item j( [credibility] of turtle (i + 1)) != -1)
6 K# b) U! u  e7 x;;
判断是否给本turtle的评价质量做出过评价的节点
4 e+ L) Q; g- w6 A  l6 w4 l- h[set note (note + item j ([credibility]of turtle (i + 1)))$ |" ], h! Z2 W$ G" B
;;*(exp (-(people - 2)))/(people - 2))]

) C% I7 h1 J3 @/ Hset k (k + 1)/ {# \& y  z) A% l- G
]
2 u% Z& N- x( |: _* n% b) Y- Sset j (j + 1)
9 O/ [; E5 h  N- Q& h' u1 L6 Q% W]. n; L$ D, r2 X
set note (note *(exp (- (1 / k)))/ k)" |; O) b# A3 Z' k
set credibility-list (replace-item i credibility-list note)
8 D# p& T/ t& Uset i (i + 1)
% K% Y: X- \' Z/ d$ C- H! k. J# d: q]1 R! t# |* c/ J  \
end
4 b9 ~" ]: K, A# C- E. H  {6 ?. R0 \7 _5 a/ o( |9 E
to update-global-reputation-list+ j: a6 b& m3 {# ^; o. x( g6 |
let j 0; x! G+ x) D. S0 S4 k/ X
while[j < people]
3 s: h- V9 R& x  k[3 E  ~* U1 m! x; P: K3 }
let new 0
' ^4 y* ]  f7 M7 [# t* y. \; C;;
暂存新的一个全局声誉1 R: u) \; Q  i0 B" [# F
let i 01 I, P2 W+ C( G" b, ]8 y
let sum-money 0  `1 X( B2 m4 J. Y1 d- v; C
let credibility-money 03 B& }/ ~/ e2 @4 n5 S" X
while [i < people]7 {8 g! m7 r$ E" O+ G" p
[8 V. c/ V- m  v- n/ N9 D( u
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ K/ ?1 Z! T& J' d; k2 U, ^+ I2 w4 wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% I2 S4 p& m+ a$ |: P0 q3 @4 Q1 nset i (i + 1)) J& w* C4 n9 [  {2 ]6 [
]) C6 j* Y8 o3 w7 R# p9 I
let k 09 H& o$ [$ Q: ?" k, d/ {
let new1 0
) R+ Y4 |; e# \' Z# z  |while [k < people]: g* {4 z7 h- k
[1 s5 z8 ?5 n! k: K9 K4 r
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)
* u& x: A. `1 U& \, @+ y6 Rset k (k + 1): H, D0 F* z9 Y6 j
]
- |( `2 [( \- o- Q6 `9 Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 \4 `) k/ e- C
set global-reputation-list (replace-item j global-reputation-list new)4 ^1 Q! U: ]+ _6 e% {5 C
set j (j + 1)
1 Y- i5 @0 d5 u]
3 Z5 {) d& G! M1 @' w( o9 Eend( h+ A+ Y, I- F1 p7 r
. W" F7 G; ?+ I+ T3 Q
- E/ v8 i6 e6 N1 R
" k$ G% X3 V( b+ s/ i
to get-color
0 o5 s5 L+ m9 H7 h( K
6 k% l$ M) o+ I0 m2 pset color blue
! u' ^2 w  _' c5 J/ ?
end$ ]3 O) }% X8 c+ z

& [2 g4 l) Q  d3 dto poll-class5 a' S3 `, M( m" f# A3 `5 U6 m* C7 j
end7 h" }8 w) T. c) q$ v( f) L1 L+ a

' o) S& B) q- b2 ^# x* L7 z9 Tto setup-plot19 e: g9 q: h5 ~
* A  S2 v/ ~5 e( t" X
set-current-plot "Trends-of-Local-reputation"
8 {1 |- f% k  _- C! m3 [* Y* b

: q1 m# ~$ G1 X( P) A0 G# F; Yset-plot-x-range 0 xmax

  S3 r! l6 v! m# X$ B, b9 ^$ K+ f9 e" H' E9 e- n* m; }. R
set-plot-y-range 0.0 ymax

* H' [0 f( Y5 d: c) @end! J7 ], N: z5 E/ O" H, l( T# s
9 x0 s. O" N- V7 U1 W
to setup-plot2; H3 |( p2 L" A4 x4 H" d/ g

. O! N0 u6 p4 J. q# i1 Tset-current-plot "Trends-of-global-reputation"
4 R1 e- m) I. u6 g8 B

5 B& V' }# W+ B& wset-plot-x-range 0 xmax
+ L: y! m" c7 e$ k* s
( p* b- J5 R$ V0 D. ?/ [; {4 Z8 q  s, h
set-plot-y-range 0.0 ymax

9 b" v* F- D( {( ~& u1 }end3 F" p1 P; D: ^- y  N+ X, X
" ~8 G% x& J+ x$ i
to setup-plot3
( h; o2 h: Q) q) F
+ M. r/ e4 v; A" Z6 hset-current-plot "Trends-of-credibility"
% o; b# a% Z6 b
& C$ v- S# C& Y9 n$ B, i
set-plot-x-range 0 xmax
9 Q, r. d, `! E' u+ g, o% K
8 R8 s2 P0 v' i* F
set-plot-y-range 0.0 ymax
- n8 n# p  R0 x$ F- M$ A
end
  Z1 u- i( o6 K6 G" q( V- ~
) g  g$ B1 W4 Q: Vto do-plots
1 ^+ C5 i8 g$ K& I$ c/ yset-current-plot "Trends-of-Local-reputation"
( F: O3 k9 X$ }: K  M; E0 fset-current-plot-pen "Honest service"  Y* B$ c; q5 d4 G7 i$ ^
end
  b9 x3 ~3 f0 n! l
! a* e! e( v% Y* n- E" a[ 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.9 q; @6 _7 ]% B6 ]
) W, _0 Z  d" C) 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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