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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:8 b2 J: F  c2 }5 u% O8 P& m
to do-business $ f  @- r7 ^# g6 U9 {' E3 E4 v
rt random 3606 y" N* B& Y+ R! Z3 V; K+ _
fd 1
; e/ L# R" H5 g; w ifelse(other turtles-here != nobody)[
/ v2 ?# n8 w( r2 d9 d  V   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.
2 U' D3 F, {! m7 @$ o. A! M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 y4 k7 T' C/ A/ X   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. s: ?' t3 m8 @7 C7 C. I   set [trade-record-one-len] of self length [trade-record-one] of self
$ z" n2 H7 t- q& }* t) z* A   set trade-record-current( list (timer) (random money-upper-limit))
6 o: M0 N" H+ L8 m5 g4 o4 j' X) W/ \/ Z/ [6 i" a
问题的提示如下:
2 X9 o$ R, D9 O0 o1 e% O# h" ~. D( d; @& S2 _  I$ `; [/ E
error while turtle 50 running OF in procedure DO-BUSINESS  k$ Y  H+ K9 l9 _2 k
  called by procedure GO
) N0 ~8 `  f9 I/ b% ?# rOF expected input to be a turtle agentset or turtle but got NOBODY instead.  _# d7 e# j' b9 g( G5 l6 }5 ~8 A; D; i
(halted running of go)
+ l7 Y+ k6 w, y
) e$ Q  T& ~% 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~~
9 T% i% w* C+ C9 H) L4 P: [6 y4 I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 U) P/ f( W4 hglobals[
2 x: b  n7 O. f2 v2 _xmax
2 F; J- Z: k, Z/ rymax
7 A; g2 w0 _. P9 _* Nglobal-reputation-list
9 [" p8 \% o0 F; A- w% \
& S/ I% `, s- z' @3 U2 z/ u;;
每一个turtle的全局声誉都存在此LIST
7 B+ ^0 H# B+ ~2 M( V+ u5 V3 gcredibility-list
% `) m! r6 ^$ A$ C;;
每一个turtle的评价可信度  ?; e% U: Y) g: ~0 ?/ h
honest-service
- g! V! I5 D* R0 Wunhonest-service7 f! D" Z) l, S) Z: m2 ?
oscillation
6 J% H% m4 ]9 a5 y9 I3 O4 F6 `6 Wrand-dynamic
! q9 e' Z' l& d& Y9 Q. J]
3 N) l3 w- m1 E8 @" `+ q
+ k. A# f3 ?" c% ]; |0 Yturtles-own[
* e# s* x+ r1 s) Ztrade-record-all* m2 }6 F) A  t5 S- L' K: t; @. u2 M$ E
;;a list of lists,
trade-record-one组成% N& h( s/ a! k* n/ w6 k' ]$ Q
trade-record-one6 l4 w0 z3 _9 N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ X1 S% S* r5 J" d  U7 z' z1 a/ \* {0 m! D% x
;;[
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]]
/ Y/ U& s: `7 u' R. C6 atrade-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]
( l9 J$ W5 e! d! `/ |5 wcredibility-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
9 b" p& {- k5 @. Gneighbor-total
9 q" d* q& b. S3 v  i% [;;
记录该turtle的邻居节点的数目* o# n" D$ h/ N# C) V; _0 ^9 s0 \
trade-time/ L) `8 n+ K0 [
;;
当前发生交易的turtle的交易时间
2 q8 c' ?3 q3 f+ d& qappraise-give$ m  `+ H! R: }; @6 U7 D3 |
;;
当前发生交易时给出的评价+ ]1 M7 |3 i( X5 g' M
appraise-receive7 Q0 @1 |: _) G8 n+ u7 v$ r
;;
当前发生交易时收到的评价: u5 k; b: \5 ?# o/ T
appraise-time' v$ w6 Y9 U6 B7 C
;;
当前发生交易时的评价时间8 s7 [4 S: w/ i  z; x
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 n' u- r7 b4 I, G8 |' u6 S$ S
trade-times-total
% z, S* r- |/ j7 Q* H) I+ z;;
与当前turtle的交易总次数& R& o; A" F; f
trade-money-total; T8 a" i' R& Z+ a- u8 N5 O
;;
与当前turtle的交易总金额
! X3 G' n$ \% |# ~- R8 ^local-reputation7 Y/ ~& s. M& Z0 H8 H7 O3 l2 D% a) u
global-reputation
/ W% z) Q5 b% h  D. _credibility& e5 _" ~: J& b& }: P2 F
;;
评价可信度,每次交易后都需要更新( s7 l3 f6 `( D! R) y
credibility-all
$ i7 c0 L' e: @' y  S+ J, l3 M1 l- m# ?;;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- c9 G' l. S- b- g# V% v# j

9 k" w2 _& Q  w' u) w* Q7 d4 b! x* i;;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! l7 ~# T8 L' ~6 X. }
credibility-one( Z" D2 _+ X7 M
;;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; Y: b2 z9 @5 w$ {' G1 K6 v4 z' }
global-proportion
' y% D6 K* k( Z8 Wcustomer
. v  F+ N! b3 z6 ccustomer-no
+ ^' q6 `! P: p( jtrust-ok
* C( H* |% g1 ^" D7 U; W, ntrade-record-one-len;;trade-record-one的长度" J6 E. o8 a5 y' U
]
% ~1 N( @2 `, G: T, z  b& F. r! Q! u* v+ ]9 K7 w2 X
;;setup procedure
$ W6 e/ q2 J! B- o. h! @7 S, [1 W" G; ]8 `( s# g/ S6 n( ~/ j
to setup
* F- V& \4 t8 D* E7 u! r" c$ e7 R0 `
9 O2 r0 O" t5 T  m/ Ica

7 i. l* n* b( H* ~6 u5 u1 C
8 g! O( i, i: W3 W. ~* Iinitialize-settings
$ Y2 V/ Q0 i: _

+ \: {6 n& g$ e' _/ Scrt people [setup-turtles]

) ]$ |, p3 l+ U" T  S
9 ]& d3 U; u* K( u0 H% T7 greset-timer
0 n; f9 R7 d+ y

# T; W7 C0 W9 \poll-class
6 q& v/ d6 v9 P5 k! V. g2 A
& w" Y/ h% f* ~+ d. X
setup-plots
  I: R5 ^  q" c

9 k- s/ J) \- a  `7 d* Z' Sdo-plots

$ f. ]8 z! Y9 t! Y5 Xend
& K' D2 ^. `& l- c% F8 T' b6 C, Z& M, z+ U" C
to initialize-settings
' I3 H5 V7 ^# B( z3 E- b# v4 D
/ T3 I3 I: m! L" c% `1 P; _set global-reputation-list []

" \9 H5 t5 Q" @6 ?" t
' x4 A8 v3 j/ v* {* B8 n$ m& oset credibility-list n-values people [0.5]

  d3 S  {% [7 `: c$ a' Q8 _
1 Z3 u% T" a8 L( Aset honest-service 0
+ W' x4 t, c3 c9 |, \
# G7 B0 [( S4 y' q1 T
set unhonest-service 0
) j/ Y$ Q0 z6 h% E. N
* T# M$ H' y9 n& J+ L. i; i
set oscillation 0
2 ]+ W$ Z. b2 p& t1 M- ]

, q4 ?" d0 v; N- Uset rand-dynamic 0

: C; \6 X3 W" ^1 k' o# D& v) F- gend5 Z" ]' @9 p' C0 }3 C9 g; G) Q

/ r0 H% |) D' G5 bto setup-turtles
/ B$ M5 ^9 q6 f( C8 lset shape "person"/ X( h. ^) d: D
setxy random-xcor random-ycor  S1 W0 ]  q; \$ I( M8 K
set trade-record-one []
! t6 u8 M8 M/ J$ Y. i

7 ?% G7 ?+ d' v+ J. C- [3 Cset trade-record-all n-values people [(list (? + 1) 0 0)] ' n( U* p# B( x( G" m4 s! g& E- L* F
7 k' }' Z3 |. `' l" ]0 W2 a2 Y* V/ t
set trade-record-current []6 g! l1 a3 q8 f- M0 ~3 K- J% A  l
set credibility-receive []6 p0 d# E% v6 f
set local-reputation 0.5
: o4 U. b5 O% \8 Qset neighbor-total 0# a! H: \5 j! A- ~. v# G: G
set trade-times-total 0. \% S: J# b" V  m8 ]
set trade-money-total 06 r- l& H6 @- V( a- |+ [$ P6 e8 L
set customer nobody
! |* O( q; G" Z5 }9 xset credibility-all n-values people [creat-credibility]
* B5 a8 K: K$ X( w3 Dset credibility n-values people [-1]7 Y; E% Y1 F7 ]( Q
get-color* u: v' S# ?& j& t$ ^2 ?; X/ R+ X
) R: A" {  R  z) O! i6 T
end+ |! p$ u1 i- K5 ^

3 s  l# w8 W) c' V- uto-report creat-credibility
# D! }* c  d1 \+ K3 t' B! `) greport n-values people [0.5]8 {. w: w  N+ x" d( X% F
end
! ]+ X( R8 n) F0 S& g* A, L9 [- D% ~* U
to setup-plots
9 ~" I' A" I6 \
4 q5 _& m/ b0 Z7 m* y3 fset xmax 30
: ~  B0 h3 c3 m9 L

/ a$ |7 N2 m3 i. ?3 [) f1 |set ymax 1.0

7 D& E' R: U0 N5 s$ c, V# l" r; F
; z$ K/ X8 F' W  q% f- f1 Iclear-all-plots
; A% h- `8 ?9 v5 P  {( m" P. B

# n4 Q6 d/ A4 _setup-plot1

+ w: x. i" O+ y/ z5 W, N: v; D) O
9 |# j  d5 U4 v' x9 ]setup-plot2
9 l( R" N7 n( }: b. t% Y
8 r) K. p$ }" m) K
setup-plot3

5 W8 i# H9 N$ }8 z' @end5 p: L, i2 ]" {1 b8 y& }! P5 h

$ n7 p: B$ w8 M- f" y;;run time procedures
: l; ]- ~# }+ x* n1 r" T* u8 ?& u; [9 b! J) ^; P/ n# Y
to go
1 s& O" b+ T5 }# k3 Q
) m1 t9 z) m0 C7 jask turtles [do-business]
2 _) [2 R+ S1 q# A/ \1 U
end
9 p/ x, O/ `3 {3 p- ~# r3 h
" d1 d5 d2 @' Q7 Z$ T  [& zto do-business 9 W! }) ~4 Q1 `2 t' q% g

$ K8 Y1 M7 T# ]8 N+ D1 A9 D2 L7 C: O2 N  M! i7 T" v3 t4 z9 J
rt random 360
3 g5 D  k: C* Z+ m+ r

$ p3 n/ q4 e: q! ~fd 1
; G0 |0 ~3 f4 ^

# N, \# o2 N6 h  K$ J7 r" g0 sifelse(other turtles-here != nobody)[
* p1 b% E; u4 o0 i' o8 G

" f* ?3 S/ p) ?3 _, X8 _  h* E8 Hset customer one-of other turtles-here

# G; E+ b$ x: X( I
& O* b+ X5 O( r;; set [customer] of customer myself

! ?$ W8 S0 s' }* V3 A) J" o
- `' C% e. J) L& J2 S9 j( i9 x% |set [trade-record-one] of self item (([who] of customer) - 1)
- ]4 J$ D) G. V[trade-record-all]of self2 L+ Z! ~* z# Y* P# k% W! g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 O8 ?% h5 j* X

3 V: K( v. E6 @) z! p: x( X1 t- ]set [trade-record-one] of customer item (([who] of self) - 1)
# y4 A2 V) d; S8 J[trade-record-all]of customer
2 Z' @6 @! X* }. I
4 \' n* l9 ]; A  G) p0 k5 s$ ^
set [trade-record-one-len] of self length [trade-record-one] of self
  X5 X0 o4 K: G- L! Q3 p4 C/ l' `
0 ]1 b  X$ c) e7 l6 E9 L+ S! [
set trade-record-current( list (timer) (random money-upper-limit))

7 d, i% {+ R1 b# C0 E: x4 o
; v5 L$ i( t2 n: Vask self [do-trust]8 @4 q* w+ M: b
;;
先求ij的信任度
7 C6 e( o4 X* E; x
1 ^1 U: G' g6 R1 T# jif ([trust-ok] of self)
9 l* @* d6 p  b5 a;;
根据ij的信任度来决定是否与j进行交易[
  l; H' A0 N" U3 m# qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, I4 n. B& r  t* _
4 g  d2 K1 L7 ~' `9 B$ o( v7 }
[
9 |# j5 n8 H  |0 N6 }

) Q2 {8 f6 @* j9 }8 W9 kdo-trade

: w9 I1 X! C5 G0 i5 F" V8 e! |3 f1 M( z+ s' F) ^/ p
update-credibility-ijl

' P7 F' n& F7 b) u4 D6 y4 i' `
( C9 j* J: P: [7 E$ ]% |6 Zupdate-credibility-list
$ e- v4 R# b4 n7 ^7 v% B9 @7 {

: j2 Y$ n6 ~) |  G9 u% c7 D' h
' a% v; o# ~$ \2 L) K' G' K6 Iupdate-global-reputation-list

: N5 Z4 o% ^  y# v; i+ e4 {
5 f3 Z: I! I  I3 V7 g( s& X8 _poll-class

; r6 W0 B+ k, n' b# U0 M5 F$ r6 o- k1 c$ S% [+ x
get-color

+ W- i3 A( m7 a, V7 V( B5 M6 X/ l& R$ T/ d2 H" K* L, F- M! }0 h5 S& k0 q
]]
* w3 N6 s( |1 o% a( K- Q4 W' \1 K( r) y/ J2 w$ A; V9 I
;;
如果所得的信任度满足条件,则进行交易* Z, N& F1 V+ Z7 M( G% j/ v+ D
* P0 s  a& t& r$ S- R
[
: _; R7 X" ^6 }* M
9 S) J& c& N. g( f
rt random 360
1 C! ^- e* w( A4 f
: x" p0 z" M: J+ S% |% R7 O/ C
fd 1

5 h/ P! K' V; _+ f. J1 x
$ h# f" \$ K# v, }7 N]

) f! r+ R( {: @* ^: @
7 M1 {# j) X/ r0 d$ u" Tend
1 D2 F9 `3 y/ K9 k' Y
; x  f. m* }( K) Z& U. ?+ Y. l
to do-trust ( [* g7 P7 N" S: s1 o
set trust-ok False, D8 C1 m+ C9 p0 [9 x

' `! Q. z! z/ {" b$ [9 y# \% Y/ U$ j
5 W5 ]- \, C! |$ B6 `( h
let max-trade-times 0
) z  n; E, T9 v! b. ?* i! }' q5 H9 rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ ^; \. |' `% ?4 }+ rlet max-trade-money 0& i, K) w  y9 Z9 P1 g, A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! J# y/ c' S: k7 w4 L
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 r. E: }* o2 i) X# ~1 P( e: \

( H( O9 N3 K; S1 ]
; m0 F/ i8 X( L: U
get-global-proportion, {1 i! n1 U/ n1 s1 F3 J7 l7 @; B
let trust-value
% [% ]3 z0 M( `1 F6 v7 ]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)
4 P$ q0 m& I  h  Q; D4 S' T
if(trust-value > trade-trust-value)/ l- }& Z7 U- }- @$ m3 C9 I
[set trust-ok true]
! W( C$ @9 h' c5 ]- K* k& R7 _end
) b  ~# u/ |. s
2 `8 ?( p4 _) Y& W+ g- Ito get-global-proportion* E) N6 k7 H1 F. v+ m7 ^3 ]0 r+ N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; g) O5 e! Q3 {8 o/ y[set global-proportion 0]
. C8 L2 s$ f- D! P' l[let i 0; e4 N/ k/ k, }
let sum-money 0
: L) B' V- x8 X! L/ f# V7 hwhile[ i < people]3 M7 A# R0 z* i" n6 a
[, P8 P6 s  D. p7 q& G  n% m
if( length (item i
6 j, y* y+ J/ |# x# I8 m$ p[trade-record-all] of customer) > 3 )

$ Z9 z# R3 t: I. Q* h' j[9 g5 a' Y/ O, U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! q  z7 i0 H! S+ ~3 G
]+ p1 U2 K) n$ ]; v( n( g' ]
]
1 \8 T% ]) V1 S1 A* b2 xlet j 0  q3 c% r! N( t) `2 x4 p2 ~: P
let note 0
8 a# Y; u+ X" r2 E- J  K2 f- M- j8 uwhile[ j < people]
+ i' _3 _8 {) _( Q8 ^[" ~8 X( w% k' I6 w) c+ C
if( length (item i( w2 [: L( D1 d
[trade-record-all] of customer) > 3 )
9 o- _" ~4 ~( b# a% x7 R9 e. A7 M) N
[6 ~1 |( A8 c- q' `8 r: B# V7 E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 O; x% I( w) A. [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 ?; j: s7 U# @' v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% n9 @7 X" k4 |3 O  r- v
]
( d9 u8 g. C% k]
1 b5 B/ d3 P7 S1 S: S4 `' m3 ]# Uset global-proportion note
( o0 w+ G1 P7 W9 E. {]
2 ~3 \; O5 _+ q" {end; r  K9 p  C% a8 l
+ l: C. |; x! }6 O' q
to do-trade
  _7 K8 {$ j+ u1 ?" m# X+ w;;
这个过程实际上是给双方作出评价的过程: Q( s8 S) s: g  E: O6 V: D9 [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ p# T3 {* G  D: n" w1 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( k: D" i4 u4 p0 ^# k
set trade-record-current lput(timer) trade-record-current" b0 P7 u: \; X: Y: G# U# ?; e
;;
评价时间
. F% r0 |( ]4 G$ Hask myself [4 t) `6 @( y$ a1 H( j
update-local-reputation
  T: E8 I  x: `5 y4 {9 @set trade-record-current lput([local-reputation] of myself) trade-record-current/ s8 H' a5 r% d7 Z; s6 b  H5 k
]
) O2 Y; }2 x0 ]9 O. ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( D0 y4 k3 Y4 [% s2 a) u! G;;
将此次交易的记录加入到trade-record-one
$ m% y, a& k; C0 a! Z, K* _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* D& n9 G6 Y9 K  s0 q6 T
let note (item 2 trade-record-current )
# i! _4 M- ]. U) [4 Iset trade-record-current) s1 Q& k/ ]) `$ m( L* N) E" R
(replace-item 2 trade-record-current (item 3 trade-record-current))

7 T, C; l: z$ ~set trade-record-current
4 J/ m6 u- m) N4 Z+ P% i8 x(replace-item 3 trade-record-current note)" i: n* w( T1 k/ F% _; E

) r' c+ X% x0 j! A% Z2 d1 r. d
2 k6 x4 P) q" r; f
ask customer [
1 F# w1 _+ l# W1 `update-local-reputation7 P# b2 x/ n/ E4 x
set trade-record-current$ n) }& t; [8 R' ~+ w" M
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% I( g/ x/ u% _, q- d7 S/ Y# e
]/ `- l" c+ T3 H# z5 ]
+ y8 y& }9 y# ]8 l6 o

2 P7 C6 V+ [& K+ v# Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! f4 o- ^+ _: ^, `0 v/ ]$ U
: b2 ^6 C: F% a/ o
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& U7 Q* H2 y& a! E! n' w
;;
将此次交易的记录加入到customertrade-record-all
; y% ]( O0 j- Mend
9 S! |5 |/ V  T6 q5 G% R5 z5 h! |  O/ [& k7 s; m' f
to update-local-reputation
3 o7 O: v: X' ~! ]$ _: aset [trade-record-one-len] of myself length [trade-record-one] of myself
% e2 a) X  a$ x! B4 j: |+ Z; @' ]4 r$ J( J. ^

' i# X" E6 h; a! D;;if [trade-record-one-len] of myself > 3

- I5 @7 J5 K/ [5 c+ w0 Vupdate-neighbor-total, L- r( R5 Z" w" x( z
;;
更新邻居节点的数目,在此进行
1 N- q1 a2 t+ G. W) b% elet i 3( ?  D5 r5 f/ w6 \0 a3 E: O7 i# H, P
let sum-time 03 F% F+ V: s& B; d7 b* Z1 u6 u: b. T
while[i < [trade-record-one-len] of myself]
+ ]" w9 f5 N/ Q6 a[
5 q7 d- F" V6 }6 [* v  Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 n4 d3 j/ Q  _5 Y% B* ^set i' L' b5 L5 ~1 b+ D0 E" O+ |
( i + 1)

+ X3 a+ ^/ ]0 T1 Z6 u]
1 K9 D2 W: |6 Q& t# hlet j 3
  o: v# S3 `7 Q8 ~# ?0 l* C' Elet sum-money 0  [4 A8 y$ a$ G$ A
while[j < [trade-record-one-len] of myself]
" d0 M$ y  \" U/ T7 e, `[
; U* M# Q% Q6 @( A! K8 {set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
4 m- J" g3 _1 z# ~! kset j
7 N# f* }1 T! Q( j + 1)

$ d) g- [! K  r8 A1 f]4 ^# H' V8 G3 _( s5 S* {2 Y6 M
let k 3
: M+ f, T# U; b2 e; {let power 0
% \7 S+ v4 F$ @$ G. W$ Ylet local 0! Z$ Y4 ?- m/ `# x3 ?/ K- h8 k
while [k <[trade-record-one-len] of myself]) D; h% K" J3 r8 D+ V# U& c8 K
[
6 L0 E; L8 \% v. w; X( h; k5 Eset 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) + V8 m' ^* M: v. b! {' W& d
set k (k + 1)
  O& h6 \2 e2 \- U3 H  x% w5 F]
" ^' u8 F7 v, }% {. Mset [local-reputation] of myself (local)$ i: _2 e5 s6 Q- n
end( V6 J0 ~* H6 V+ C$ K
6 |) \  |" q6 n) P( e" e
to update-neighbor-total; e" b7 a# V: b1 v
8 P. f  q9 H" F2 x' o2 W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! Z% k+ h8 t1 l! k/ K) B# ~+ _

- g* G  Z# V1 V% J; l; C

8 x1 D, b- }: R+ n$ j- L0 Gend
) X4 f3 Q; y4 e3 q* w! u& |( d2 u, C4 a
to update-credibility-ijl " u9 f5 q5 T3 @7 M3 E# M& J: P' |

& x: s, p- R+ `; K- N;;
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。- G1 P5 K7 a% W8 i
let l 09 ?1 G$ }& K6 I; H
while[ l < people ]
4 |1 B# O/ C* f7 l;;
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: o4 ^( |5 W7 Y[
. D$ i( B# J( O% qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 ^/ `7 F' D, S8 R# ^" H2 f2 e5 R9 eif (trade-record-one-j-l-len > 3)
0 y' a+ e' u( ~  K, Y[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  u4 P# T: y8 Z1 E# H% ^
let i 3
; R' w) t5 G7 ?2 }7 hlet sum-time 0
$ t- J6 y% a! b6 I! M+ N" owhile[i < trade-record-one-len]! e6 R0 s8 s* F5 ~' I+ D& y6 f1 G
[( y8 Q2 |- G# r  ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 Z$ Q9 |4 g2 t" i# h
set i" S0 p; v' j* q# A" e/ h
( i + 1)

2 B$ ^$ o$ X7 q7 h2 f3 k6 X. k9 z' @]0 @! w# y6 i# c- z; r' ^9 M
let credibility-i-j-l 0
: l% q  H! v8 \( @- O; S;;i
评价(jjl的评价)
6 H0 `2 y; M1 i% T) E6 r$ I  s0 Nlet j 3/ x% P$ @/ S# L5 I# D
let k 40 j% t5 J: ?4 v  C2 ?
while[j < trade-record-one-len]
$ U2 p/ z/ I, `, s3 o! {[
9 U3 q; f8 ~) d/ a! Ewhile [((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1 y3 I( r1 N" J6 x- C: e1 L
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)
# U% U% L0 E3 [( w% Xset j
7 I9 G2 z' e' ?# j$ Q: F( j + 1)
2 s* e; Z3 V+ m5 X& t, r1 ^
]
5 D& P: D: D) s7 O& T# w8 tset [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 ))
' F/ C2 `% M4 d: _4 u, h/ r! F
! z' M/ h, U* f$ A, ^' R

. K' K1 |* w' n" j+ plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) Y$ \& Z. R, I; R& s;;
及时更新il的评价质量的评价3 e6 X4 t8 Q1 ~! I& ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* S; r0 \# l7 _% _set l (l + 1)
* c7 @  F1 G- L; N& U2 C]' ]5 h( C; F( ?6 Z
end/ g1 c, @' K/ Z" Z, m* v+ t' z

( _; M! C3 T  @' U6 O. uto update-credibility-list
' Y. \/ m# t7 k+ w$ \$ }7 A- p2 Elet i 0
$ `! m9 j% e- w9 j8 twhile[i < people]3 W% ~  @, l, K5 T7 S* q
[
- J, g0 I8 b7 p% N! a0 I; i2 m5 xlet j 0
! o  Y% G/ f* ?" u6 |0 n2 Z, nlet note 03 p9 ^: i- Q: [
let k 0
: n1 g# {* Z$ m+ {3 n4 |  T;;
计作出过评价的邻居节点的数目
# l' i: _/ v4 V6 k, z" W) C) jwhile[j < people]
& l" F' h6 C) s) J" s0 X9 M[
7 ]" x4 q, y- x+ F! e7 y5 T4 X( aif (item j( [credibility] of turtle (i + 1)) != -1)
( q8 `3 ]% k$ D# ~;;
判断是否给本turtle的评价质量做出过评价的节点
5 }, H, {/ c0 H9 `[set note (note + item j ([credibility]of turtle (i + 1)))6 ?' D/ z( N1 f" x' V. n4 A; L
;;*(exp (-(people - 2)))/(people - 2))]
  @1 c5 X! ~% a5 t
set k (k + 1)
9 V; z: [" _' ^6 g( K. e% y% ?0 U]+ N, \0 P* g% F: _8 X7 x1 P, r
set j (j + 1)
# X" V. T) w% ]]
8 w: \* C4 `1 q- T, @' A# Bset note (note *(exp (- (1 / k)))/ k)# K: N5 u+ h( D% Y  ~
set credibility-list (replace-item i credibility-list note)- U% H2 i& L! N0 j
set i (i + 1)2 L* ^- ^$ R# u5 W* n
]0 E1 L  j3 E& J$ T! e
end
1 g3 m3 ^4 Q1 ~1 d. ^4 S: f2 z$ R8 F" `# q3 M# @4 b
to update-global-reputation-list
! ^$ |) O( W% b( ?! A; ]let j 0
9 l6 @* V: F/ y& Dwhile[j < people]; @7 j9 I3 M; F* x6 L. p6 f% M
[
3 X/ A, ~% `* w: L6 s; K& nlet new 07 c# W/ u. s" w/ ?  ]% L
;;
暂存新的一个全局声誉
& l+ V0 @9 a. w! B( i  N* \let i 0/ o6 g7 k, O5 t" H
let sum-money 0: c" m- W2 a: i& c# x
let credibility-money 0
9 W* M1 g$ ^# Z4 v. Z. `7 w* q/ H1 Vwhile [i < people]
' S9 B5 R: R5 g  U[3 @, g8 B" s; X  v3 A) f0 M1 L, J0 a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 A. C# t$ N% ?+ s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 b' c$ G1 u! m* Q
set i (i + 1)
# G5 _6 I5 [1 D]
; k( _! f" i+ y, Zlet k 0
/ T4 [/ |' c2 ~! c5 qlet new1 0
& F- D- W; b1 C! M) Z5 R5 cwhile [k < people]
5 u, N; @+ w$ t3 ]4 t[$ V1 B$ G5 N2 z
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)& \# n" ?6 T' K9 @4 o$ N& d: C
set k (k + 1)
9 U7 {! w( E5 _]
" y2 {. u: W5 r0 z# a; s$ jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 V* s6 B* _' B; z9 T$ |, h& d1 ]+ y+ gset global-reputation-list (replace-item j global-reputation-list new)
6 f) ?# u2 \* h  F: jset j (j + 1). g& p0 ^9 u7 p: e0 w
]
. V$ C8 C( v4 [9 P: F- [; Dend; a% v4 p9 a1 u) m
) r) C: k( R& \' ?1 l% f

6 S: _$ A& a  I9 |/ t7 |: l: g
5 \# Z4 f0 f/ j. f0 dto get-color
" F. T& Y: a" J1 l; s; X! @' h! J8 d7 J2 A" }
set color blue
2 Z5 U) x- d/ b
end
) q, V- |3 T4 e5 H( v# s$ ]2 z" I# \! Y
to poll-class5 d! [( i8 }. `* D
end6 I# p8 K- y  X
, \5 @$ d; m3 k4 n
to setup-plot1, T; q0 B6 V7 L3 `- b
' v# c! D1 ]6 `( }. w* E
set-current-plot "Trends-of-Local-reputation"
9 k) W" r" ?5 x2 S/ n5 \$ l7 ~& _3 }
0 W- H$ x" w. q" ]
set-plot-x-range 0 xmax

+ c1 O% T0 B& ^% w6 [+ g4 c6 O7 J, e- n
set-plot-y-range 0.0 ymax
/ f. f0 e/ d$ V- i7 g
end5 L$ T  }. P' U% [; _' U6 ~

- X$ b( `- [' ?$ @to setup-plot2, N/ U- S6 S1 L, k6 a& v  ~

. q- y2 F+ ]& t& b9 Rset-current-plot "Trends-of-global-reputation"
& z% N. U# I0 `7 H9 a! o/ z

3 J) N( L6 G; H- z7 X  @/ x& n% }set-plot-x-range 0 xmax
7 V0 z: V. ]2 `; x4 u

8 z. z- I& o3 Y! rset-plot-y-range 0.0 ymax

0 W+ O, w7 Y4 F7 {8 ]3 {end9 h- k' D8 _' t
5 G3 A  T! z( D) s. I
to setup-plot35 s5 \+ E, ^4 j- P. Z9 ~
+ w9 ?* u2 J7 w4 d  \" D/ Y
set-current-plot "Trends-of-credibility"

% [0 ]. U# E5 V" [+ N; J
, d0 b* n1 H9 R: I4 x, B/ Uset-plot-x-range 0 xmax
  @, c1 L1 S5 g$ w8 `4 @

/ v5 B* D2 f7 w+ h* ^( [1 m4 Dset-plot-y-range 0.0 ymax

% b) ^1 ~0 Z6 B! a5 k+ s% d  Tend
' @+ d0 \8 d( Z8 ?
" y0 J3 a6 J9 i3 Xto do-plots) e8 ?7 P% H- [& Y1 `+ j6 p
set-current-plot "Trends-of-Local-reputation"' G, l9 s$ ]! a  _* G8 P
set-current-plot-pen "Honest service"
1 d) @+ X  m4 q% Tend
3 R" c1 {4 ?( @; j: t3 G9 x. G2 @
[ 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.2 t, ?0 Z* J* u4 T- l$ f+ V5 z

: f0 F" J' O$ d- \- ~5 V" y9 a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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