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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:. E, c+ g2 P" `! l0 R
to do-business % J; S# @5 k* z
rt random 360# M8 J; ?* M& ?9 w" r- L/ x5 R
fd 1
- W6 T) G( |/ X2 K, ~8 a" ^ ifelse(other turtles-here != nobody)[
- j* a5 F5 T) z$ h8 T   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 _2 Z. r* S4 G) c! W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 |5 y) X* q# v! _9 `4 ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ [3 b+ z" ^- t! c   set [trade-record-one-len] of self length [trade-record-one] of self
9 `: Z2 w9 d& J$ n9 N  W8 R' J9 t   set trade-record-current( list (timer) (random money-upper-limit))/ K- B) k8 B& O
" m- U' w# h$ b' [7 [2 a
问题的提示如下:
+ @6 n4 g1 A6 J( x. ]  q6 d4 z9 r4 t9 @9 f4 l; a
error while turtle 50 running OF in procedure DO-BUSINESS
6 k  g' ?4 S6 @% P* T2 D+ m. j$ C  called by procedure GO
0 h+ F) O5 z0 Q4 F, _8 S% ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 U6 n5 q2 @+ B# S) Q
(halted running of go)
9 c' d" Y7 S, P" v5 n
9 K$ O" K: X( C8 @( H这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~4 W" b. M# U! y4 M' k3 }; 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" L( ~& X$ R7 v3 \% K8 ]$ b
globals[
, |  L: D" U8 Y" I) Oxmax9 t* b7 E3 {9 i( n
ymax$ @& {. w: j! B0 S; L
global-reputation-list6 T5 r9 ?2 O1 }9 m" L5 ]3 ^. W$ l

1 p- E- E  l' @;;
每一个turtle的全局声誉都存在此LIST
- j9 }; x; Y; v* Q9 Dcredibility-list
0 a  d( I8 d/ A$ E% X' u1 O;;
每一个turtle的评价可信度: M* _6 i  g1 C
honest-service
# e0 @5 y; f  C4 \unhonest-service; c8 ]( ?; p. d4 f6 k" [
oscillation
0 p. G- V8 ]" Y/ {rand-dynamic2 N+ I8 m: q: c0 f6 x! F$ w
]
& y( T3 T) U) i- n6 p
" E" s+ B0 x. m: aturtles-own[! o. ?7 D1 V! A8 h
trade-record-all
3 u4 e  I1 U' `4 C: g;;a list of lists,
trade-record-one组成+ e. x* R0 h2 v7 p! J6 s0 e
trade-record-one8 e5 E# V  P9 l1 ?, T, g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, y; `; \* A; v9 |' b: B6 ?

7 U' ]' b: o6 _# O; d7 t  w;;[
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]]: ?7 e# g) S6 W5 o! d) g" x
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]; w: X4 \! z) F8 |; M  E
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
0 ^4 s4 n( g; k- ~1 T' w# ~neighbor-total$ ]$ ~; A  M5 }" n7 Z+ K
;;
记录该turtle的邻居节点的数目
8 d8 T* I: `. }# ^' \trade-time
. J, U/ w( a0 }; l+ O; J;;
当前发生交易的turtle的交易时间  W# B3 P  [# v, {! z: X5 }
appraise-give
1 f5 I9 J& j: `2 i  {;;
当前发生交易时给出的评价
, I# }% a; A1 G. Z2 Mappraise-receive% W* V* B* \& h* `. l( ?* C; B
;;
当前发生交易时收到的评价  ~2 N3 K7 y% U1 T* x( E
appraise-time
: v" V* e# u5 X0 @;;
当前发生交易时的评价时间
0 P5 p" u1 _# G) C7 P* S! hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 c0 n+ ?4 A' C6 otrade-times-total- k+ P" S' x9 p/ O
;;
与当前turtle的交易总次数& f7 ~% j. q; f! y; ^$ x! p, B& G. D- c
trade-money-total4 Z4 A& U4 S5 r6 ~9 r3 `+ @7 y, c
;;
与当前turtle的交易总金额" [$ c; t5 {. @& L7 I
local-reputation
6 O& N' q) N' ~7 Y) V* f0 d- Wglobal-reputation$ x9 }" ?" H1 c$ e5 R/ H
credibility: ~/ _' t/ z& p, E5 U
;;
评价可信度,每次交易后都需要更新* \" p! F) I% C& v/ J
credibility-all
- I0 m. N8 P- }7 Z;;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" @% E, L  {1 N# |7 x$ c1 i2 y
; [/ K: `  f$ c$ h, Y3 Z
;;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
# I5 g$ `7 r. j) |% A: o. Ecredibility-one
2 F/ D7 P! g$ E0 \: @: T- a;;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/ U4 U+ U* B8 {2 E0 G& b
global-proportion& L+ I9 h3 `2 m8 A- u" d
customer; C" S6 |& e3 q/ o2 V
customer-no
0 x/ `/ c; _3 a, N  S3 Atrust-ok: S# O: n9 Z# d# T  O7 C/ ~3 Z6 k
trade-record-one-len;;trade-record-one的长度* n3 `% M/ i5 L1 u5 n
]9 E+ X# j5 T# f# W+ L
" E7 G2 c7 [; \8 Y
;;setup procedure
) @! _! Z/ F9 G: B0 x) }/ m% b" V8 [+ O# n5 R
to setup
$ U0 C9 `/ x. o( E) }3 a: L/ r% m" h: W6 @) s' b$ p
ca
# d7 z, d  t; ?
- Q1 o  z9 k9 P8 e# F2 P
initialize-settings
1 j/ A2 ]4 ~9 S; `

/ P, Q9 q- H, |7 i, \2 c) rcrt people [setup-turtles]

+ N( C1 f1 G6 }4 p2 _4 [' v' }
+ }1 J: C8 L6 b( c2 Jreset-timer
  W* l( j5 E) f( z$ m0 S6 A

7 E+ P0 Z" k/ opoll-class

9 T# A- o3 N9 P& ?  D% M3 x# X+ R! G% c' ]
setup-plots

$ K2 t: S8 M+ N% ~* R5 }0 q* L& \9 v0 f. |* D
do-plots

: d* U( \# v5 e9 E) yend; P+ p1 Q% x5 |5 g" y# \

6 X% f7 F* _0 y" }' }( f7 pto initialize-settings( d2 k" ?  A0 j; K1 C' w0 ?( b
2 M1 w/ x& e/ w+ N( K
set global-reputation-list []
" h$ Z' H  ~/ l! s2 _/ \+ G. n
1 n( X" r' x+ `2 T
set credibility-list n-values people [0.5]
+ L! b5 ?6 m# _( o* [' n
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set honest-service 0
6 t: e+ ~9 G' l
1 N# {6 k- w; d) G( ^. D! `) ~( u/ B
set unhonest-service 0

  K! l5 ?3 o) y( E5 N( z( `
  h" C- _% J* Rset oscillation 0

5 v' y% a( O8 N9 Z8 k) K! \, F* _$ M" m: A9 q
set rand-dynamic 0
; @" k7 F5 j5 z3 g
end% ^2 {( G  D1 k0 Z5 Y; A' h
9 Q5 a8 D' @0 g9 J
to setup-turtles # E6 ^" `+ o  T
set shape "person", X0 F, n8 \6 {/ ?# D7 I  O
setxy random-xcor random-ycor' a. U! `+ j" l+ b
set trade-record-one []* y- H; s1 u- I" [

: F0 L3 A% s$ f0 P1 w0 o" kset trade-record-all n-values people [(list (? + 1) 0 0)] 4 ~# f) q5 J7 i$ V

/ X# X  x+ G% lset trade-record-current []) ^6 o1 D% G9 {" V/ c- ?
set credibility-receive []
: T& z* l4 k& J0 N, \set local-reputation 0.5: f6 g, b* Y& }4 w! e+ ^/ z
set neighbor-total 0
) P. u% ]- ~( tset trade-times-total 0) J2 m* N& Y9 H8 g" @1 x
set trade-money-total 0
1 j+ [) V: g3 ]: w1 Sset customer nobody4 z. k2 ^( H9 x: q( f+ l; s
set credibility-all n-values people [creat-credibility]
% W6 _' l( k9 I; y  a  ^7 t9 b" Nset credibility n-values people [-1]. O& B2 y( U7 d6 T: r+ M
get-color9 s% s: }. ~" ~1 V3 s

( H7 z9 |/ _" h  ^8 t0 d/ Iend
: J$ N; n# G) {6 d! Y
9 s0 ]# I& W1 u6 ?  E! Vto-report creat-credibility
+ d9 V/ [3 _9 L* k) L' @report n-values people [0.5]) T" e: Y% T" z  U
end) }! f% Q: w" p( |1 ]. F

4 K& Y; H  `6 A! U1 [1 V8 yto setup-plots
- I' \: d: M) h2 w
4 J$ O2 }0 V) ?/ z9 Eset xmax 30
8 ]  h  ~0 j/ m0 Z( A( y5 B2 i  H
* M9 c0 g, \. @. T, a, S7 [
set ymax 1.0

0 ^% H' U! B$ X( I, y
& K% ]$ i% m. e: t2 sclear-all-plots
6 T+ F$ J& M) H+ z4 j: m
8 Y8 ~; J  o' o. ]5 o) z& S5 e! i
setup-plot1
3 p8 a8 F- d; V" b3 o2 J3 U# v9 ?' s

0 {! ~2 k' u6 U2 c, Ysetup-plot2

! k& p4 @2 q! y% k& q9 O, o0 s$ W" t# I4 _8 u2 Q9 ^  w! S
setup-plot3

, s3 s3 R. ~" Y7 c6 Iend
* s/ G! \. S3 s( }  |2 f/ q0 B9 A+ B" N+ g0 H
;;run time procedures) x. w% N0 c- J/ G) M% P
% Q9 [+ G: y  d8 X" s. r; A4 A
to go
5 ^3 K" X" M9 B; G
. P/ _9 e3 b" Z, k# ]5 ~% aask turtles [do-business]
5 Q4 M! o" u0 p& ?! s/ a
end
; W8 k! M: P5 N% z7 C' p; h( o* P1 U
to do-business
6 B3 p+ Y/ ^) y; r

- j" }1 G" Z- w. h" S5 E* C
& J' l7 }- _/ R) v6 Trt random 360

1 m8 x; B( Y+ k
" p# v  q$ p$ dfd 1

7 M& }, b$ F: E' m" k( S8 C
, H8 l6 }: y0 ^+ g3 [. C' Yifelse(other turtles-here != nobody)[
  U* x* w; _5 Q  B$ f+ s
; Q: [: r+ }! `0 q% Q
set customer one-of other turtles-here

0 r) q! y! g* i6 N1 v" s* q
4 x) l; @/ t, P; j;; set [customer] of customer myself

6 v& |1 [1 d4 a/ i) K& A" B  F% ~5 p; {  Z3 T5 \, G' u
set [trade-record-one] of self item (([who] of customer) - 1)
; c5 ^+ }! k. A; W3 v0 M/ D$ W8 m[trade-record-all]of self
# T8 a* K9 E# K2 F9 F& l, Z: P$ k0 };;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 w% N$ G* ^# z" k" ~( L+ t
* M1 b5 ^5 u7 T# A+ N' Z# b
set [trade-record-one] of customer item (([who] of self) - 1)
( ~5 ~# k. |; x; ]0 t[trade-record-all]of customer

# I. ?( N; @' K
5 n& @' |3 n" P. Wset [trade-record-one-len] of self length [trade-record-one] of self

, Q' E6 a" J1 j1 I7 O( w. C
1 F9 f; I9 @; a0 R& n/ y9 R, [set trade-record-current( list (timer) (random money-upper-limit))
6 @" L# ~8 l) g* d( _

  \* T( q2 q: |( |0 F# F4 kask self [do-trust]
. L+ H2 A: F  R;;
先求ij的信任度
8 O5 G3 f! u6 T
. H" E2 i0 I4 w( Z& b9 nif ([trust-ok] of self)
9 x- b) v5 y" `( v" P0 Y) S! e;;
根据ij的信任度来决定是否与j进行交易[: ^8 T" B: `3 M5 D( p3 [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 {; D- B( f& `7 ~6 o
" M2 q4 C& R+ U: r
[
1 X( c5 u3 Z: S/ S6 ~5 u/ Y: S
/ a3 p+ S* r. H9 `4 x- p
do-trade

& }% h& C8 h/ n! W, D0 M% j$ V3 v$ Q3 O* g+ o& |# D
update-credibility-ijl
  Z, s6 k% {' P7 ^

2 X9 \3 p# f9 G3 X. Y- k! C, jupdate-credibility-list
* K/ c  w) G6 V; e5 H! L
0 k, A$ D1 d4 Q+ p$ l
8 b* G5 @5 |9 _. U
update-global-reputation-list

- ^* n: W) _% p3 s7 D4 M* @# G( }& d$ H! i6 `1 s7 M6 v* O
poll-class

; \& n& t6 t, c2 ^  ?
' T' c, Q0 v4 R0 Bget-color

$ n9 \' K, E( D5 |; L; D5 C% G3 M3 O) K% E, s+ n7 v8 \5 x
]]: j  y9 _2 O9 d8 N8 Z. u& E

- t# O, _' C/ P5 B$ j; y;;
如果所得的信任度满足条件,则进行交易7 F8 j9 ?1 v! m% C, B5 J& p

$ l: B7 S: Z' ~5 \+ b[

4 {6 z! l8 R2 H. P2 q
3 E% N# a4 X; \) P9 o% Frt random 360
% h' D. O6 Z6 r. N. k

) C6 z( a* Y( T- Hfd 1

* M; A! l  C$ J  x$ M# ~5 m4 E0 G3 C9 U2 H2 \+ ?9 j8 g9 U
]
: ?* q8 j$ p4 C$ l
# C% n" V8 g  M0 h
end
2 z2 R& r+ e2 p; a7 @3 P; n& x

0 e, k% S3 @# Cto do-trust . W; P8 G/ m) Y7 [8 E
set trust-ok False, y6 k8 W7 a; \

, R: i* f0 t/ G1 @7 \0 }
3 X; `5 i0 G. w# I* A: j5 q
let max-trade-times 0* x! O! j$ x2 B6 Y3 ^7 P' b0 b
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# z8 m0 f. D& U
let max-trade-money 0
+ d( f* j" o2 T0 B; t+ O9 pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& N' i: S) f, E7 z8 W$ j5 J: k; T
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 r2 f' x+ j" z4 S  ~

" Y- |: ~6 r) I# C% ]5 _; _( I1 T1 W

6 E" W3 m, i4 D2 L- Eget-global-proportion
/ n, o2 t0 k" B" A: V8 Xlet trust-value
" E3 M# F  m2 p1 a+ clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
. a0 y& k  ]  ]. J+ ^# ]0 r
if(trust-value > trade-trust-value): O: ~  e5 {; I2 P3 T3 U7 {
[set trust-ok true]
. b5 F; a- K* E+ Vend5 V# n6 S- e; @# ~$ z% D! {1 a

% F/ v- m: f0 Z6 N. bto get-global-proportion# [0 ^. }2 S0 `% |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# ]) V, p' S+ \/ b, Q; \  O[set global-proportion 0]* r4 |8 T+ C" i5 Q# H5 g& }% a
[let i 0
4 b4 V3 O0 Q3 w6 N, llet sum-money 07 I5 U8 H4 w. Y; ?, S) Y* s! p8 P
while[ i < people]( i- I5 n: E, V; C, ]
[
. s6 j& E: D# f- Mif( length (item i; d$ f4 K' A3 Z% F- h! v9 \
[trade-record-all] of customer) > 3 )

' M! G7 \! l7 w5 ?. n5 S0 u[
) c9 `6 H. W+ n8 Z7 `7 hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( ^) H1 }3 o; I" ~$ D# w) k
]
* _' _: h5 o" j0 T2 a: v& w8 d" f]2 W: U% U0 p& D+ Z
let j 0
/ u% Z0 o% a/ T. {let note 06 i  H6 U3 c  \0 ]4 {+ ]
while[ j < people]
  j# }& R+ o4 n[. p& M2 M$ ~' J7 Y4 v, u! h; g2 G
if( length (item i( n8 F4 G1 m( B- |
[trade-record-all] of customer) > 3 )
  K; o) J4 f$ T7 t4 ], @& ^- Y
[
8 ?; t; Y9 E+ X+ c3 u: N# [ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ C: Z& X; _9 ]* \% U* s7 i( d; [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 f; p( |6 V# `" s$ a& f5 K3 s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& W1 w+ b" x/ T2 C% Z9 a1 c]2 \: i- Y% w4 w. D" e. f
]( j! j) T/ G4 z; f# V0 {- I6 u; D3 `
set global-proportion note
# l" I3 I. C3 d/ w1 i4 g]
/ L7 k6 v" m! K' F: _+ Jend
8 ?) x( l  w0 t
8 N  Y  d& z: ?2 xto do-trade+ ^8 y) F$ _- _! u2 |
;;
这个过程实际上是给双方作出评价的过程
2 }) T9 g! }6 A4 \, m8 t9 }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 w  i- c+ y* S: r- Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 ~  t2 D. o" O; z1 [
set trade-record-current lput(timer) trade-record-current
, a; W% @8 T5 w  \) V;;
评价时间
5 ?3 j+ N0 r5 Z0 T" V+ V* B! Zask myself [
, N( [3 Y" n4 V" S5 Wupdate-local-reputation
$ q" ^; Q0 P. z* _( Z2 qset trade-record-current lput([local-reputation] of myself) trade-record-current
2 }) V7 a& A) o- {- k8 K+ `" A]9 I9 G' `& p/ W( J7 u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 A3 c* F8 a( H. `2 g) Y
;;
将此次交易的记录加入到trade-record-one, e& i9 K: y! K0 \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  c0 h6 S* E: s; ?, r) v$ Klet note (item 2 trade-record-current )
( d4 V9 p) E' h: I' C) f2 H: Dset trade-record-current
# d. r  p1 `+ @" I5 B6 P4 z- }(replace-item 2 trade-record-current (item 3 trade-record-current))
$ C" p, [, g/ o) y0 U
set trade-record-current* |5 P7 n- d. r  g) U
(replace-item 3 trade-record-current note)' U' a# U) e2 J  E2 ~8 \
4 I6 u/ w3 \2 ~# n

& o( x+ d& Z! w/ L% |$ _7 C- _" T) bask customer [
- y& _( ~7 C+ \5 \8 }  e: T& gupdate-local-reputation  e( i! Z6 L4 i; O) f
set trade-record-current! o6 w. ^9 c% w6 E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 J- E9 ~: h3 B6 c1 @. ]]/ \$ b; ~4 R$ [: B" ]- W
1 O0 V( D+ ?4 \# a

5 J7 r3 w0 w' \/ _, _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" V1 ?5 @1 R0 {7 D5 ~
9 j! M/ M, @4 v; v& g7 z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( J+ [9 r: ^4 [- a) N- g6 }
;;
将此次交易的记录加入到customertrade-record-all8 {+ _" g: Y/ s! a0 o; c
end
9 v8 S  R; K7 E* [& q/ W: R6 w$ o0 o  |$ Q- [# t
to update-local-reputation& a7 S6 |& }3 {# t$ o
set [trade-record-one-len] of myself length [trade-record-one] of myself1 i+ Y+ U! P$ T% {2 n0 P$ |( j5 r. \

( N, a  [+ M/ ?4 M5 z/ p" K+ M* g. V1 ]1 Z% C
;;if [trade-record-one-len] of myself > 3
2 N* B* [2 O, ~9 Q8 C7 ?+ }
update-neighbor-total: ]8 r7 w. F5 G  G9 U" G; L! U
;;
更新邻居节点的数目,在此进行
4 J( z- d- z, V' F  blet i 3
4 G7 y9 C1 o( q8 V! Vlet sum-time 0
+ q1 F6 X: T( v; x% Iwhile[i < [trade-record-one-len] of myself]+ m5 x6 M/ ?" Z& l% p' Z
[
: v& c' d- j- G/ z7 U2 k$ zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); z( g) \: T6 O3 i. S$ S
set i
* L4 n8 W5 v! l2 L( i + 1)

' R/ ]3 z5 p9 t% E' {* s0 N- @]/ }1 X  v1 B+ Z* @/ t1 I1 p& q  I
let j 3# [4 ~% s/ a: r6 l& D  L3 H
let sum-money 0
0 G1 y4 N1 o  S- C! Ywhile[j < [trade-record-one-len] of myself]* Y- Y) B/ `% X" V. ~
[: o- C/ d/ O, p
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)
, n4 t4 u. h. w5 c6 B/ \set j" O- T- u2 |( {7 S
( j + 1)

" t( R6 b! \* Y, e]
: f1 U0 T+ n" B7 c2 ylet k 33 D- B# F0 P% u; X. A% ^
let power 0/ |. R% v& A4 r2 _9 j4 _* j
let local 0* f2 Q6 g1 p% A% k) x! B, n, Q
while [k <[trade-record-one-len] of myself]
" z& |1 G1 H8 p- r- c, [/ H[5 s" R4 h8 s$ i0 ~  T
set 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)
8 ^, O/ }8 K& p2 _' F: O9 d7 S0 o+ O# Fset k (k + 1)! r5 o1 ~( ?) ~) S% y/ m/ A& A
]
) u/ A6 F0 G5 H- Hset [local-reputation] of myself (local)
& z5 S" @6 j1 f- Vend1 N5 h" k, K/ h4 i

2 r9 p, n: q3 a3 S2 ^1 Y5 Qto update-neighbor-total
6 Q8 I' ?& ~/ w% B
- i' q6 i. ~6 q$ [3 p* q: E/ tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  k6 C5 I4 J2 n

& F5 W1 U* z0 F) u/ K1 K4 Q$ D$ O
" w7 T" I( \1 _. w+ N& v0 S3 X  |
end
9 o. t2 T% U' V4 ?- F
1 I  |# S5 o. t/ W4 u5 P- @to update-credibility-ijl * b& h+ K$ }. {2 C
9 F. a( d* S1 _
;;
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。; u! ^' x6 H- @( P
let l 0
! Y8 S& a4 _5 H! t1 }6 {while[ l < people ]9 S0 v  L- B5 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
* A" ^! f8 E. @5 C4 F! C[! U5 }# [) o. o3 t2 z5 l  _( ]0 \
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( Z1 n; K/ U3 d$ n! C# hif (trade-record-one-j-l-len > 3)
% b* B1 X" v. e3 j9 `  V[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
' [. h+ \; @9 h4 _% flet i 3
9 y$ E& }# n7 u0 W1 a, s- alet sum-time 07 s1 ]! d' Y2 `( l
while[i < trade-record-one-len]- g' ^9 G1 T5 n
[: {( H# o1 I/ {! \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 n6 C7 O( }" }6 F2 Sset i* k, u9 F8 d9 H$ R6 K  o; C2 B
( i + 1)

9 ]  G9 R1 j" S& B]4 X: t8 u& R/ e- i# F' }. D) P
let credibility-i-j-l 0! d9 C( o1 K- B
;;i
评价(jjl的评价); J$ ^; r6 W' V/ T, q# F2 h
let j 3/ j; O# X0 p$ J0 s- m  P2 D
let k 4
# v  ]7 J+ o2 Pwhile[j < trade-record-one-len]7 i2 r8 b7 u; ^% y3 `. r% {7 b
[0 P. z9 G1 t. L: M: H8 ^  |+ h; \
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
3 P. p' {' C$ l! Uset 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)5 ?  x/ h* w* F; A
set j. V1 ]0 t- I" Z8 [; p+ s3 q
( j + 1)
& @0 {0 y* k3 P2 R- M' v+ Q0 N
]' }2 v# Q! v* p
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 ))
) ^+ g7 }; I0 X" M; Q
0 G. t# L- ]) b4 F* P
$ u5 Z; n3 [" u* ~# B' G6 z3 D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 c3 F  L, l5 Y- h; D;;
及时更新il的评价质量的评价
* G/ ~9 O5 J) Q4 Z5 Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( O- {9 U5 L) M( W: P! R/ uset l (l + 1)* c9 B8 g; V7 `' V7 F3 z  ]" y2 b
]  V- D1 E; F: y7 f1 f/ J* H7 R
end
8 D- B3 L, O  k7 Q8 f/ \& [" U! a& U% |  w9 k. o& Z1 ]2 Y. L
to update-credibility-list
2 J" {% L5 d' _" \/ K6 T0 g7 Hlet i 0
% Z# Y, z: W  g2 M9 xwhile[i < people]
+ ?+ R+ J5 z3 N" S[
* B8 U2 _, O2 }: T7 B4 m. Wlet j 0( d2 _8 a9 a% ]; x/ Q) t% h
let note 0" @+ _4 ?7 ?- k5 r  E
let k 0- R5 \9 I" j" r2 i; D9 a9 C# Z
;;
计作出过评价的邻居节点的数目4 b/ y- l8 m# `5 b
while[j < people]; B/ @" l5 a% O9 Y& v
[
" Q: }0 ^5 ~9 b5 fif (item j( [credibility] of turtle (i + 1)) != -1)% m, N7 |/ s: Z; z4 a1 y( g+ [& N  S
;;
判断是否给本turtle的评价质量做出过评价的节点* y& T9 h, Y% M- b/ H! }
[set note (note + item j ([credibility]of turtle (i + 1)))
) `3 _! K: u) b2 r' v9 V8 O. i" x: T;;*(exp (-(people - 2)))/(people - 2))]

% g' Z$ ?, f! Z: ]1 Lset k (k + 1)
5 X5 I: _& N0 \" [0 c- P% r) z]( D/ I! F' x2 s! z/ t
set j (j + 1)$ Y, @4 j; A4 s: ]8 L6 X) i
]
8 Q% a8 ]" @7 Oset note (note *(exp (- (1 / k)))/ k)
' p  K& ~& B, x: T: b3 {& H3 sset credibility-list (replace-item i credibility-list note)
( H: \6 j! Q3 X7 |) f$ P1 Fset i (i + 1)) Z3 Z, K1 e4 ?
]
' C* t$ p- b8 d: Q3 S  Uend" ^: B# W# p8 J2 }1 x
& A1 }" ]$ p$ [4 ]2 `$ ?! f0 g0 e
to update-global-reputation-list
- ]$ V" b# Y9 J6 H- X$ k* Elet j 0  r  M% C" L( p
while[j < people]3 Y6 D9 J! i5 E. W3 J
[
; H! r; _: u. c/ Y) L7 p+ _let new 0  W* T3 U( q. l! \8 x. {5 Z2 l! O
;;
暂存新的一个全局声誉
4 G& k' b& J4 S  H% ]let i 0
! G$ i7 C, N5 J0 t& K2 r5 ~, ]' Elet sum-money 0
% m) l9 D2 {6 P) d# N9 F! Mlet credibility-money 0: R* W$ t* P( s
while [i < people]6 [1 b  b  E3 h% |, g
[8 N* f1 i& X" M8 J/ A4 g
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 W4 ~! G& d* X2 ?% P) D5 C4 Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& ^. T8 ~: a# yset i (i + 1)
! K' M; z/ |: m# E5 o]1 D9 P$ h4 P, J
let k 05 u: F6 B3 G* e5 ^
let new1 0
: n2 G* i. B4 R, y# Dwhile [k < people]1 l  }+ U# L! R* s* n5 W
[1 }* z  c% {8 b8 b, t2 g% V& e1 f
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)& l- v, e$ `$ E  W
set k (k + 1)
8 z/ [. k- |! b]  R; A$ n# T5 l+ m5 \4 {6 A
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , a6 o+ w7 L& h, M$ |
set global-reputation-list (replace-item j global-reputation-list new). O( o+ ]/ Z9 ?( Q" x
set j (j + 1)5 U' n7 Q8 r+ c
]
% p1 u- {" W& ^; z' b* l$ ~end
( L. ]8 T  o3 j: z9 @" l; e4 {) B# z7 \% Y1 L
" L" V& V1 m8 [& k: N; S, j
: [! d' |# J4 s3 q. n3 j( X: e
to get-color
. p7 \/ ~& C2 l9 G, X  c# k3 A6 K3 Z9 o9 ~8 y$ I
set color blue
$ s! u/ A; c& q8 w0 M+ X/ ]9 H! |
end8 x, }0 v2 I5 z# A& \* j2 y
4 d1 w$ g6 o+ v" T+ Q6 s/ ]
to poll-class
! S7 \+ ~& _$ R- I+ P# Eend" ^: G4 h4 v4 a. x! `4 B7 G

# k; f/ w0 c7 u% Hto setup-plot1
5 x$ P# w6 N3 @  h9 |6 }  P/ i, g' J+ @; G# V; i# O' K
set-current-plot "Trends-of-Local-reputation"
/ Z) p& c  v* Z
4 i( ?+ D. w3 O9 i* C
set-plot-x-range 0 xmax
" _( O4 j' \5 ~: E
4 x% M- G! S2 ^9 U( B7 }5 v+ q
set-plot-y-range 0.0 ymax
  v0 }( M* g: z& u6 D; u% I
end1 {6 Q" y- v5 m8 P

/ z7 S7 x' P3 l6 R- a: Sto setup-plot25 q& ~) h3 @& I- j1 b+ d
$ X6 P! u3 Z5 \
set-current-plot "Trends-of-global-reputation"

4 V6 l: U2 ^$ Y" z& ~  q' V* r4 L, l3 |
set-plot-x-range 0 xmax

- q5 z- D4 |) W( F6 D1 L: C& f, H% }5 c& ~; _/ Z7 L' ]: @( ~# f  Y- {
set-plot-y-range 0.0 ymax
0 b6 }5 @. Q/ J+ S  N5 A
end
% y- X! {: L0 p7 f. N  e- H3 s, @9 Z* }
to setup-plot32 y  A! d; M# @$ S% H$ I
. M/ s. m) z- u+ H
set-current-plot "Trends-of-credibility"

: ^- R: w3 w$ B9 M: o
& X3 j5 p! h  U  Y4 L4 Rset-plot-x-range 0 xmax

. N3 k7 A8 h  N+ c3 q! u( I
5 k" D9 R9 D' H1 H- Mset-plot-y-range 0.0 ymax

& A& r4 }" G% `: \' }* v8 }% Pend. z1 I! i$ R0 @5 ?2 f
& j' b6 \+ z. b6 i; C
to do-plots3 Y" E6 C6 @% {( G* D$ A8 g0 H
set-current-plot "Trends-of-Local-reputation"
4 M7 v4 D5 K, g) q# \9 r2 ?! Kset-current-plot-pen "Honest service"
/ d  Z, M! R) z# f2 }/ }, N5 f2 Aend8 I" e7 ^+ m. B2 p

, v1 _, r# [) O0 A  E7 }[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
7 C* I1 v% ~  E% [
  j; y, |0 D( t- Y/ t8 ^9 U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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