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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:1 `: k+ B  g# W% c/ S
to do-business
! @4 Z4 d: H3 q4 ] rt random 3606 u. S  J$ |+ a
fd 1" U( Z; \/ J* [. X
ifelse(other turtles-here != nobody)[
  P; x& |, s0 \- [5 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.8 V- m  T: e$ P( R% }/ ~3 E
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, s: Z( b+ k6 q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 M0 o, V7 |: I/ n   set [trade-record-one-len] of self length [trade-record-one] of self
" S+ |# D6 o0 \- z$ F" B9 e3 K8 X- l   set trade-record-current( list (timer) (random money-upper-limit))
0 d& G3 M2 P9 _* B. _. o$ @, a6 u& V/ i8 k
问题的提示如下:
! ~" E3 p4 w3 q1 a3 L- e, M; f' v! N$ D* L- ^: H6 e" Q
error while turtle 50 running OF in procedure DO-BUSINESS9 r+ e9 C3 W% V$ s
  called by procedure GO
9 S) T0 j1 `: r4 ?3 N: j; g+ IOF expected input to be a turtle agentset or turtle but got NOBODY instead., [* \9 M) L2 A6 A  @; S
(halted running of go)) ]0 s  }  q$ f) E2 D
7 g+ R( [% {% b' }" s8 I
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
' F; H  D& B# r! \/ V8 l. `$ G2 l0 U! H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, l4 _7 O5 K1 z
globals[
5 ^2 J. w7 C+ G. t; zxmax9 h+ c- G6 p  `0 B% A/ C
ymax
2 r( W' p5 w/ T- |9 ^' I1 Sglobal-reputation-list9 b. y! `( \  l" D% [

% L5 J& v/ h9 [/ D;;
每一个turtle的全局声誉都存在此LIST
2 m% d% A* u) p; o2 @: F& Jcredibility-list
: a2 Z, t: x# E3 F;;
每一个turtle的评价可信度7 `7 Y" K1 W8 t
honest-service+ ]& Q% w! m" w  Q7 q2 ?& b
unhonest-service
- A, c5 k/ {" I9 E  M, z" Voscillation+ L0 [9 o5 N4 P4 f5 y- P
rand-dynamic
- s* s; Q- t1 ?. t7 B]
4 ^6 P2 w' E0 m0 r; J
4 ?2 d( T( A: Jturtles-own[
* E; j" p6 f6 o5 m6 i. A, }7 ~trade-record-all
( I5 _1 U$ v7 J! l0 o. ?2 ]4 q& |;;a list of lists,
trade-record-one组成+ s& Y/ X% i& w4 R. Y0 j
trade-record-one
5 f- o& H8 E- @0 X% _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 ^! r* x* ^; M/ t
* g6 r2 q% E5 n8 M, i! T;;[
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]]5 y6 k- R- v  M2 p( E
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]
+ F( ^$ u! }. i) p0 Xcredibility-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list7 y$ e/ v4 @* z2 o0 g/ j
neighbor-total) n  W* `6 ]: M! Q0 U8 V0 W2 F& B. ~
;;
记录该turtle的邻居节点的数目
' P5 X* s$ A1 Ttrade-time
: F) W7 b/ O, d* |# o8 b: O# ^* |* M;;
当前发生交易的turtle的交易时间
( G: _) K; H& g. j# L0 j- Wappraise-give
3 W4 Y- F! o6 V- R4 w7 {;;
当前发生交易时给出的评价
2 }$ ?* u+ |3 r4 O: Mappraise-receive
9 e5 q, |2 [2 i+ p0 I. j; Q) };;
当前发生交易时收到的评价2 S" D% g, Q* Q& t
appraise-time
& G5 ?7 j- z! F% v# z. C/ u  Y. b;;
当前发生交易时的评价时间) J) @! Y( J1 e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ L: B. r( j( M. s
trade-times-total
, [( a+ m& E3 {9 S' y0 y9 H;;
与当前turtle的交易总次数
( i1 E) f+ v0 Z- ?- D1 Rtrade-money-total- Z& g! ^$ n- x+ I' |: ?' w5 x
;;
与当前turtle的交易总金额
* l/ d" ]7 [- L. h" S, Olocal-reputation
0 e3 m6 Q/ O1 H( b. rglobal-reputation
9 w, D0 w, Z" R; J" J  I0 zcredibility
  _. v9 b/ o) q! ~/ Z* ];;
评价可信度,每次交易后都需要更新
1 I0 h4 S# ?; n  Qcredibility-all
9 i4 i0 Y* ?" h9 f" e9 @4 |;;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) q' i# h7 q0 `8 \" n$ K2 s9 w

  z7 ]  \3 X% {7 R! X;;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
& l6 M( ~6 l5 {0 kcredibility-one, `" a) `' i- j. R
;;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+ B  [/ E: E0 L5 Q8 X( q
global-proportion+ D" X5 I2 `* {3 N
customer9 b1 Y6 t! F$ B: I! x
customer-no
8 z# k: m* X" h: u5 Otrust-ok4 @/ ?% t- \$ m& z7 L
trade-record-one-len;;trade-record-one的长度6 U# P9 z, k' L' {3 W" l
]
8 l9 A% Y: U1 ~7 [* |, X0 C6 T( T2 d3 ~; }4 r! Z
;;setup procedure" J1 h7 R5 b+ C; Q
' g& a0 [5 J5 J* J
to setup
! P0 z& J' [& v& K
  X/ u" B. X9 C* M% E% n+ mca

$ I& n3 O7 T' W8 K! i, X! M* Y' t8 [) e0 [: t' @
initialize-settings
: |6 ~, [7 C; b1 f/ @

0 i8 ]& d7 c8 c4 Lcrt people [setup-turtles]
* ]3 d0 ~6 W) j8 {1 m2 B+ a; E

/ d' f3 C. X( I6 Wreset-timer
# W3 A( a& ^' r( q
6 A7 [8 Q4 H% n  k5 S
poll-class
( D8 V6 e9 _! h
: Z# q+ `4 `5 y; l& R# e
setup-plots
7 M: ]" c8 b; S. h" o( A

0 G& o& `; M, i% n: h; sdo-plots

, z7 H2 y, O$ uend
% [0 d; ~0 r" a" D" y* z2 h7 y7 _* R$ y  F5 c1 r6 y
to initialize-settings1 F. a3 L; Q, f
, ~8 T! T& g* F, f8 a8 O# y$ j
set global-reputation-list []
( g, ?/ Q( V0 M1 y3 w& U
) F8 T: E( O3 F
set credibility-list n-values people [0.5]
+ Z4 \( O8 y1 V

4 E0 ^# c  N2 Dset honest-service 0
( S! W# n; P5 H6 T( D9 a" J

5 l% V7 g9 X7 b" C! Z0 l1 qset unhonest-service 0
! w4 T0 {( ^6 }

2 I( x) {: A2 Y: l, P# Lset oscillation 0

* T5 ^- m( r& y3 u" p3 n, i/ d
! C0 V+ ?6 y0 T# n! |" {set rand-dynamic 0
! O, `# S. M: K5 v& V0 a3 w% S
end
  r9 n# i9 ?% d* I8 L
& t2 O9 t- k8 ?$ [  Z0 K+ Ato setup-turtles
! g: |: Y6 c0 A. ?% z+ cset shape "person"
/ R& l. ?- I9 L  f: l" Y: q! Dsetxy random-xcor random-ycor
. C/ B6 h& h2 p) i7 Kset trade-record-one []8 n. ?- ?* t# x: [$ b8 [4 u( ~

6 @/ O$ b0 U! i( h/ \set trade-record-all n-values people [(list (? + 1) 0 0)]
/ y7 H- [$ p) k: W1 q2 c6 x$ {

2 z  Y7 D8 ^0 O1 Kset trade-record-current []0 }9 Y/ F# ^( X
set credibility-receive []3 i- y5 s' B  f& K# N; _& I( Z
set local-reputation 0.5
, }8 ?0 R0 g7 C6 [0 A3 R9 Kset neighbor-total 0' M; O% r' w9 x0 r+ L3 q. B8 k
set trade-times-total 03 ^. y" H5 n- s0 b( G
set trade-money-total 0! `1 `0 x6 b. V9 k8 r
set customer nobody3 a" ?, a- O! I3 e/ u% w
set credibility-all n-values people [creat-credibility]; ?" w. v, e5 r& ~9 T* @
set credibility n-values people [-1]) j5 F: n6 |4 u
get-color
6 M5 h2 M! r: _, y5 [/ @& E
! H# E6 D+ b- x2 F- Z/ M" }! V/ p
end
  x/ _2 V% d9 R3 q' ]! D5 [' }. Y% C1 [8 m6 ~
to-report creat-credibility
; ?& J' }' D8 l- m  v, L9 ~report n-values people [0.5]
( G8 L( I/ j2 B; R4 cend( Q- z7 G3 x! \

" d2 G$ p, B: b6 ?to setup-plots5 J# k2 }( {: \. W& r

7 g2 Q' ~/ I& d- {& G; Mset xmax 30
6 T5 {2 u5 U2 b

& h, X) D2 i, B7 k1 @! uset ymax 1.0

0 Y# ?8 b1 S1 a; p3 A( E4 o! g8 h! O1 m
clear-all-plots

; a7 ]. J, p' i2 @! S, P& ?0 O2 e1 m
setup-plot1
8 [3 |) a' U; c

1 `+ b9 Q* \  Z9 Osetup-plot2

! u( I. T* k9 v; F2 I6 _2 x& ~
. D3 y* z$ u" A. J- X: q; esetup-plot3

. i# D  g! k1 K1 b1 A4 x; Hend+ y$ M. J5 L4 ^2 y
8 b7 H/ ~1 @4 z
;;run time procedures
6 ?1 @5 x2 I9 Y2 D# a5 v  T" ~3 x  k8 H5 Y  G( ^6 l
to go
3 \1 P0 x+ i7 @: r& o: ~
6 s3 R9 ^6 J& L% a$ Kask turtles [do-business]
6 \2 G, h; f" r4 Y) y9 ^
end
8 L6 S8 F2 j. `# s% X9 o' Y& x
# T: D, ^8 v& |5 |0 h* A0 ]to do-business
. f) E0 H0 \7 J7 z2 X" E: x
& |" j# W# t/ @! ?5 {( u' m: {# S, f
4 `& P* D6 ~0 B+ \0 N4 k3 r2 o! x
rt random 360

* I" u- [' h" m, W5 ^6 B- \0 A5 g+ h4 i
fd 1

6 z( E3 |/ V+ \: F8 W) V
3 l7 b7 P5 K* A$ Z) T7 pifelse(other turtles-here != nobody)[
, F4 n( p2 I$ z" o# ?5 X9 }2 B: T& {
% Q, O1 K! F& T; B
set customer one-of other turtles-here
! T! b" K( G) \9 ?

, c+ R% C( A! z$ a;; set [customer] of customer myself

8 p9 ]1 T6 \% b+ ]& C: u& [# K4 U6 O+ V5 r" l/ k3 {: T
set [trade-record-one] of self item (([who] of customer) - 1)
) _9 W# _6 n& r0 N. g4 P$ @[trade-record-all]of self
) c5 a: D( f5 J) C: e4 X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 p. W* f5 j# s3 s
% n3 t3 \: Z: c2 K: E# n
set [trade-record-one] of customer item (([who] of self) - 1)3 Z! S( J5 `( ]0 ]
[trade-record-all]of customer
2 K+ L& N9 m' J0 H0 U
* A# k% Z: T8 W  b7 c' c) F
set [trade-record-one-len] of self length [trade-record-one] of self
, a; q5 q5 b& k1 B0 o( O& s3 i; u
& q2 x& j2 ~" J
set trade-record-current( list (timer) (random money-upper-limit))
' E4 }6 I' a/ ]# Y$ }* P
6 l! A4 b0 T2 ]2 P& o! ~, k+ K
ask self [do-trust]: D$ [& Y* G  Q. Y5 C$ Q
;;
先求ij的信任度7 q8 v6 [) a5 X  C$ c

0 f6 X1 \% {# u9 uif ([trust-ok] of self)
3 e, A. B. E' T! S+ Q;;
根据ij的信任度来决定是否与j进行交易[+ U, }9 Y( i; w$ ?; T$ i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# B1 A, @  K+ k0 s' t; ~0 I/ c( Y8 }( @: L9 \
[
: U: w! ]3 F2 W8 i& m

1 s/ K' i- i( H# U' }do-trade

: J- \8 v! P% W; O& `! c! l% S% M4 A- k+ J
update-credibility-ijl
$ ?2 N( A  o  {1 Q" s* _
) \. W% u8 _! o9 Q' I  a
update-credibility-list  p9 h0 a# G- v1 R
+ {* E, a! s. @' H# o0 y

8 H4 q; L7 a1 ?6 }( N* ?6 w- Vupdate-global-reputation-list

) Q. L) |" g7 a  v) L  o- j
, p( J5 ?0 f8 l7 b- a/ ]# xpoll-class

, q+ i8 v4 M, q% L3 n7 y9 w7 \5 `( I# L
get-color

" |# [6 ]! }) z6 ?5 |8 K8 a% o
/ S# t+ C. ^3 Y# j, F' `" G* K]]# h& F; E* x% C) Q
3 O# V, ?+ Y. k3 K: m9 n7 V, p
;;
如果所得的信任度满足条件,则进行交易
0 N/ L5 n/ M- P$ E0 b/ v
3 ?# I3 @9 x# R( k[
  m! ?$ t$ q5 W1 X% i: M
: S0 Z1 l) t, W3 D/ ]# f/ d4 o
rt random 360
$ K1 V+ Z) Y) o  T
3 d; R9 q/ K! z5 J: N4 {
fd 1
; |2 E: e$ f" C. s6 e0 d5 ]3 q, `5 M3 F

3 @. j' a4 n* O; p]

2 o' _+ u# ~. r5 G$ c6 k
( ]4 y2 o3 Q. t7 G5 dend

, T1 W: s$ F% l2 m0 R8 Y
! r8 \! i$ P$ U7 i! L* B5 fto do-trust
! K( U8 s- x+ S6 [2 U( }set trust-ok False, D2 v" v& b7 T# b

& x) ^4 x7 @8 t. @% M

& L& n; I' n! N, [. N. H9 Alet max-trade-times 01 ~9 t+ n: s" _4 Q+ E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 w1 d+ N- t8 [* @' z8 K5 Y
let max-trade-money 0
3 p) E( s, b7 C! d* R( h! rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- W$ L& `9 u$ b. U4 t5 M
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ Z/ h# ^: J1 s% I, _, C: R) o' P- n2 O9 p5 {0 p! m  S7 x" q
9 u+ O# T. Q. q
get-global-proportion- `+ \) x9 b+ y. M8 F
let trust-value3 y9 j4 J6 j; m, O. 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)

6 H9 g# u; @- d$ C, nif(trust-value > trade-trust-value)  a+ l; b. H3 h. K
[set trust-ok true]1 Z0 s* \# t1 P& s4 C
end
. w0 ^2 L  ^7 K7 Q' [( U& j7 a* U. D2 N
to get-global-proportion
: v$ r! @* m+ p7 U# P: E, nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" e9 e4 ]* |+ c, g- r' L) i0 A[set global-proportion 0]
; ?( b  t0 p) q) V+ j# i[let i 0* S4 c, V$ _) ~, r- A' |
let sum-money 0
  K9 ~' v; m* h3 awhile[ i < people]! g$ N' G6 f& Q8 E
[; U3 ]" S( c4 F3 Q1 }2 {( ~1 B
if( length (item i
6 [, T# r" g: u" Q* R! w[trade-record-all] of customer) > 3 )
1 v4 w& O: I+ o# Q
[
5 o, Y# h/ k7 p1 X$ Y+ z( cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% D: T! N4 F# R/ K) L# Z! @; Y]! i! A6 c0 N, _2 `
]
9 x0 N% h4 H# P8 L$ Tlet j 0( P! ]% U; V' Y2 N' S
let note 0$ s5 q8 J2 K# O  {9 C3 m0 A( T
while[ j < people]
% W6 K: h  X1 H( _[
! N4 \. l+ |. P% D4 w$ J7 A9 g& ~if( length (item i4 j4 T" O+ u/ B
[trade-record-all] of customer) > 3 )
6 P0 Z( N( d, v, N
[
2 t: |# d) ]# D. B5 i8 s2 rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 b6 f9 ]. p4 ?6 `* G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: F& m  ^- R) I) q: m% X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 l% U# x) k" Q; n]
$ p6 f) R$ s# _! {]! P9 p" X" Z& ~- K: C$ V2 b& @
set global-proportion note
' [5 }1 Z- r7 j. e% Z  []5 n4 s1 l( ~- K# H
end
# C- E. ~- N" V2 |
: ^( L0 [" U) z5 _to do-trade0 S' d4 R; D- s  j( q8 D) n
;;
这个过程实际上是给双方作出评价的过程
; F6 ?  |9 g4 d: V5 s# Z$ Y# Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- Y8 N& u1 h: A7 E, X1 \& u" `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: [/ m* g0 K! J) }; g3 p- t/ xset trade-record-current lput(timer) trade-record-current
$ X: A$ |' w/ k; t- q- g$ o;;
评价时间
5 A" M2 f) {% L, qask myself [
* S( T; r$ U! G% t7 o3 L3 B: Dupdate-local-reputation
5 H+ l' ~. X( o0 L! A+ dset trade-record-current lput([local-reputation] of myself) trade-record-current
- t8 L9 R8 c: t  U. J]
9 J- R, M4 g' r# b+ p/ [set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 ~; h# R/ y6 `" `  ~
;;
将此次交易的记录加入到trade-record-one
% j6 x1 H8 @, \( T6 v- y, hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" V# I0 \4 w0 ]  K
let note (item 2 trade-record-current )0 G. ^# @1 X! }' A4 h2 \
set trade-record-current$ r* M* U1 z( c3 Q: K! {! h  M
(replace-item 2 trade-record-current (item 3 trade-record-current))

4 @: }. ~- l$ Aset trade-record-current
# N6 ^: k/ y/ P(replace-item 3 trade-record-current note)
0 ?: |9 Y1 Z2 X! a7 n- \  p6 L+ J8 K# G' ?0 f6 k# d. Y

. |$ b# ^; {" w. Hask customer [
/ _/ D8 i7 a, H9 Mupdate-local-reputation
1 D; @9 S7 T1 w0 Vset trade-record-current
9 z+ h* |# D+ u$ S( n: u# ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& P6 A2 F( Y7 p  f7 \( @0 U
]! [% X% i1 z9 ]

4 i" T3 }4 H3 N: e8 r1 r& {
) B# Z; [/ j6 x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' X$ d- e% M' G3 R2 ]  v3 U7 `

5 Z. d% ~& p6 Yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ e8 h  t. U* }' P4 f; q;;
将此次交易的记录加入到customertrade-record-all
2 z& T! i0 a( ^" `3 a  Zend, A6 ?* L( A- @2 x

- t* R& @( x0 I" |1 g1 J7 eto update-local-reputation
! {1 |5 B1 `" \4 Q7 Aset [trade-record-one-len] of myself length [trade-record-one] of myself
: a" Y8 c( E+ w8 }- D- l9 E
+ F& z% ~1 m$ I$ t0 x' Z( `7 l9 ]1 x
+ {* k3 C/ }& n6 F1 Q;;if [trade-record-one-len] of myself > 3

$ s4 L9 U; E6 p! y' Supdate-neighbor-total
+ O. T" }4 \7 @4 w# g0 R; D1 \;;
更新邻居节点的数目,在此进行
3 Y2 i7 h) o9 w7 j5 o! tlet i 3( E0 A+ x7 @$ h8 q6 u0 n
let sum-time 04 A1 F. T3 d0 V& L" l$ G
while[i < [trade-record-one-len] of myself]+ l7 [% L* P% x4 T. {  W
[& j  a6 m, M5 O: a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) [! q6 Y$ Y! d
set i/ N& O! T( g/ a1 S1 K
( i + 1)

+ w5 N2 F  u5 L4 q: {3 B]/ a  r5 Q' S7 s; {( E
let j 3
7 y( z( j" O' w( q' ^/ g/ glet sum-money 0
5 M4 G; v8 U5 c, cwhile[j < [trade-record-one-len] of myself]
6 s. o  w8 ]' e8 {6 X0 |! v8 V. i[! s- x: ^2 N7 V, @# H4 W
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)- {0 T* u: M  B9 o4 c' w, S. Z' {' g
set j. N( X- S0 F- c$ q- b0 K! B1 W* _! F
( j + 1)

$ p7 W% n+ x$ n+ ?3 H+ ^]5 n. r; F, F; b& U8 j
let k 3
! E" ~/ e! u5 F3 ^let power 09 r$ Z$ I+ q" z* j9 L- R! a
let local 04 G  {4 f( H/ y/ M$ P* b& X
while [k <[trade-record-one-len] of myself]
' J7 Q7 B9 s6 V, R% m& f4 B- I[
6 e' I. h9 a! X9 a2 q/ c+ I# Wset 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)
3 Q, w( J" D* ~6 c8 x7 dset k (k + 1)% d3 J4 t0 L  L7 g: Y/ b9 Q
]
. A! \. y% a; M3 t3 @+ F- hset [local-reputation] of myself (local)
4 {0 x4 ~6 G: B* ?2 Rend, ?% }3 f+ O2 D9 L( y
* L# I1 {+ t/ ^2 t2 `6 R6 `
to update-neighbor-total
" A  o0 M' `/ ?+ m
2 E1 x3 P& ~' p6 T* h" Mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 ~: U, }$ P' _- P) t

1 L; }, E  J/ W
% M' A1 c) Z% }, R8 ]& Z
end
" T( U; D% B. Q  q. u3 b1 c
/ a$ z/ O' r. m" O* ~/ Tto update-credibility-ijl , y. I8 a; ]) f, n6 e4 a* p
/ z0 J/ [& j6 |. B2 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 ~, B+ D0 b; W4 ~
let l 0
2 H* J! t1 Y/ W1 |5 z: ?# hwhile[ l < people ]
: U3 m; G" [6 }' u5 ?/ I6 E;;
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
$ g+ ^  w, I0 u6 v6 ^[
* s6 k' i: B# ]) o' klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 f9 b4 d" M/ h4 G% I# R
if (trade-record-one-j-l-len > 3)
% f; E. v! \! J* 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
6 Z( d$ ~) F" K; Z* plet i 3
. b+ z# j3 c8 V, `let sum-time 0; _& E6 X1 n/ z1 R7 s
while[i < trade-record-one-len], f9 l$ U/ C) m8 P  V1 u7 k
[8 P1 l3 p3 W$ K( B( E( c+ j/ c
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# i& W% J& |9 j# s. c! v' d
set i
) L  o) T2 W) v& g4 z8 s( i + 1)

( l& T, x. b7 ~5 O2 V; v]
! w/ W. d4 r* R/ Z3 ^let credibility-i-j-l 0
  X8 P  C5 k. u4 W) e1 U% n' };;i
评价(jjl的评价). N- }; g1 J9 g8 J/ H4 _5 A* o  _
let j 3
+ e7 K, s* ~5 G' M& ?let k 48 x  ], a$ w0 I  X$ g
while[j < trade-record-one-len]
9 l  }3 Y; W" i% c2 _! F. @1 Q[
, s* O$ j* {" G0 A  Lwhile [((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
% a5 k& |# e4 j  G' zset 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)& t6 ?  M+ j& g# c9 J+ x2 {
set j8 \5 w7 M, }- @9 [
( j + 1)

" F8 V, n" Y7 |& E]7 T8 R# i8 K% {
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 ))
" c; v$ r6 }2 ?0 x  h; C) d1 c/ V- z+ m  `# |+ J$ i

7 L' Y. l" w' y; ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) F! a( {5 F5 I0 r9 D; [
;;
及时更新il的评价质量的评价
/ {5 J. f1 v9 ]$ L7 M% gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% k2 o6 d2 j7 b7 C
set l (l + 1)% i/ d0 m7 U: D* U& W
]
0 |- P, D* n4 j2 e# d. A5 R; r$ gend3 h: E: ?$ V9 @

+ I1 l; i/ y9 ^# Y9 [  sto update-credibility-list
- b2 ^& J( q9 \. l0 K( [let i 09 |  s9 u) H# |9 O! s$ ]+ C
while[i < people]) X2 P. T3 F5 [2 {6 m! @
[
0 \" r/ m/ b$ j. L" w: tlet j 0; |( @* p4 N, n! b  c) e( Z8 d3 e2 f% t# n
let note 0( `" G3 q5 y% W/ I, [3 I, L
let k 0
# `  b+ u0 w* D: `;;
计作出过评价的邻居节点的数目  m- {, y7 N8 G- V5 x' v+ h% J3 j
while[j < people]
. _+ X! o( u: V- X0 G[- f" |' Z) Y, F. B6 u% i  g9 X
if (item j( [credibility] of turtle (i + 1)) != -1)
3 ?# o$ @) R6 ~" J;;
判断是否给本turtle的评价质量做出过评价的节点# c% j7 f4 ?2 ^% K; [
[set note (note + item j ([credibility]of turtle (i + 1)))( Q6 j0 w3 B9 M8 i0 c8 E, @
;;*(exp (-(people - 2)))/(people - 2))]

, U. z- K9 ]3 [+ Tset k (k + 1)$ R4 ~* B# ~) J, {
]
8 u' s! P1 X. a0 ^* N) J% dset j (j + 1)
% n& B6 Q8 T- M. }: z]
. c5 B9 Z% k# O3 i: G* D7 s7 Sset note (note *(exp (- (1 / k)))/ k)' m- n& X) H( k' h
set credibility-list (replace-item i credibility-list note)6 \: b$ F2 [* L, ^/ L8 |; h
set i (i + 1)
' [1 F1 y6 j) L. T, E% W+ f, c]# u1 n0 f1 ]* J
end
8 l) e' ]. p' j" B
! @$ S5 n- w9 i! \1 l( ~7 Kto update-global-reputation-list
; C) d, @/ f2 wlet j 0
8 p( C( Y; L9 X* j4 Vwhile[j < people]
- L! o1 i( @0 [: p" @[0 z0 r* |& u3 {( K' N/ a
let new 02 I  C9 [$ V8 D3 n
;;
暂存新的一个全局声誉5 Q' D9 h2 b! E; v8 p
let i 0
! `+ d/ b( O5 n# {. Qlet sum-money 01 c% U3 ]& [% |+ N4 Y2 O! G
let credibility-money 0
2 ~3 P9 A+ S; O" xwhile [i < people]
' V+ }; Y! I. k[- Z0 C1 R, V* b" I! a8 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" l6 b& T. G8 f* z2 x8 j
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: q5 {, m1 m0 m- I; Y* P$ Xset i (i + 1)
1 S- K# ~# I( w7 c/ g4 D  [: G2 D  `]
1 ^+ L& M# x( a6 a8 Z# z, t9 \let k 0
8 N, v7 K* o& Ilet new1 0
1 e6 v7 [. O. R: R: U7 Twhile [k < people]0 f4 n& a  J  j
[
: I& d. ?2 d$ _0 i- y% T/ {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)" a1 |8 N) V2 Q' T- T
set k (k + 1)
" |8 e4 R) e  b& z6 ^! f: Y: E]
% s& l3 V1 w2 X( Q- C9 _* C1 d2 \set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. [6 C( ~2 K9 p7 K8 {set global-reputation-list (replace-item j global-reputation-list new)! z0 M$ S- U" _* Z$ }5 h
set j (j + 1)
% Z. ~+ x+ q# ]! B7 a7 @]
6 q: J. k" l; Q0 X! O6 \end
, M$ ~  {2 ?6 t
* a  K% c. w8 J8 c8 M- ^* y1 O  r) {$ N, O( z+ F) N
8 ~% {; H% Y0 Q  b7 W+ t! ~
to get-color
( f9 ]% d1 z/ ?* d% k( I& ]" G
1 n' z$ ^' O( |0 f+ C) u/ `set color blue
7 e" ?* A+ R( }/ W" T" B
end5 \5 o2 s& G" t0 Q6 E1 E$ T: [7 o
" n/ b. g6 y% d7 X) p# D
to poll-class- ~9 C7 [  W: h0 G1 J
end7 L- u* F9 _! x/ ]# Y+ I

% m6 V$ G8 K' P. |; O! mto setup-plot1- s- d% a2 L% w2 T* b1 B. y9 p3 |; v

/ p  o3 ]4 a0 H( Bset-current-plot "Trends-of-Local-reputation"
3 m& |7 o+ o8 s7 U
5 N( O, r" s6 O6 m1 I4 I) _
set-plot-x-range 0 xmax
" p" G  r: Z& E

! p- v# X; p2 m8 y7 l. r2 i  Oset-plot-y-range 0.0 ymax

  p- P" X6 q, g( {# t% C  P2 Fend
* H$ x2 R6 W. K' _/ b1 `
/ d6 J& u3 H8 a" ~to setup-plot2
3 ~0 j; ]  @! e- K' }2 r% t- }8 j# b2 o
set-current-plot "Trends-of-global-reputation"
$ k: r; f8 D$ n) ?& L

. Z2 {, M/ B4 O4 sset-plot-x-range 0 xmax
/ i8 d: L: p' i$ _+ L  y& w+ p1 v
  i, K# n" G( \! Y) |
set-plot-y-range 0.0 ymax
; M$ v) U; p+ t/ ^& t) v
end( a1 A$ ^* K6 K, d& Y8 P8 Q/ V% K
9 M2 e, u: l' e2 d* p. [
to setup-plot3
4 r/ D1 T2 [$ M; \" V+ m' E
* Z# z) g. k: Q- y* W7 F7 L4 P( @set-current-plot "Trends-of-credibility"
) A+ u8 q7 o% I$ Y! e

- Q2 f. C' i. F) z: x. [2 i; O. Y0 q/ Iset-plot-x-range 0 xmax
7 \" h5 ]. L: T2 d

. Y" J$ V2 s) x8 I3 E/ cset-plot-y-range 0.0 ymax

$ u. D9 ~- |& {# \, N  N! Gend. z5 Y7 a% `; K

& ]5 `/ Y. W3 [- Mto do-plots
- f" B( \8 s* l# u, E* \- J- ~. _set-current-plot "Trends-of-Local-reputation"6 u3 ~  V+ H$ y0 f/ K9 X
set-current-plot-pen "Honest service"
9 L+ l7 U3 c+ ^; d1 xend
! ?: `' S: K! I9 L. j3 @3 O, n* x: [! R: F+ W
[ 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.% j0 e& d$ r; j, y

" f# k9 ~( d+ S4 K5 r. T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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