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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:0 [' i4 n7 {" y: T9 M. m
to do-business # M0 D+ i" f# r+ M) V! e* u# K$ C
rt random 3600 l. G, W* q# c5 G
fd 1; X: B. x5 M- ~, c0 X+ ]
ifelse(other turtles-here != nobody)[
# r8 B- ?. F8 R- \   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.+ A- n9 D! f; {' E3 ?% T4 O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 }% Z4 ]% N# f1 L4 J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* C* Y: f( Q# I0 Q% X, x$ K5 n   set [trade-record-one-len] of self length [trade-record-one] of self
8 }) V/ P! B6 `4 L3 }2 Q8 c   set trade-record-current( list (timer) (random money-upper-limit))
, @! K; B9 ~6 f8 @6 v( ^& g8 u! P4 |8 S. Y
问题的提示如下:1 ?4 _( u. C  H% H
, i8 j! T- s/ i4 Q& \6 Z& O
error while turtle 50 running OF in procedure DO-BUSINESS
- r* H, ^" z1 D! |; L$ q1 Y& i: l" `+ p  called by procedure GO8 Q( @: c9 }: F: W9 [  A
OF expected input to be a turtle agentset or turtle but got NOBODY instead." m. k1 k7 D( {% i+ X9 P
(halted running of go)
" G! f  L: |# v, k& x& z& a6 E' l' f) d: P) f
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~~0 [; X' f! r9 L1 g& P8 z
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/ e3 }6 v( [6 a* |' f/ H5 ?, c
globals[' l) X: B! {7 ~: m" }. @
xmax! K1 [  y& z+ }0 j
ymax
1 ?% E% s3 a* w- g9 }global-reputation-list
2 B/ T: z5 L0 C- y8 O
0 T7 E7 z9 T2 \! P# F- A6 j;;
每一个turtle的全局声誉都存在此LIST, H9 ^! S( z- W0 J4 R. l9 n8 g+ l
credibility-list
( r' w% f4 F' c; [3 r;;
每一个turtle的评价可信度- U& k  \2 q/ d
honest-service
/ G& }+ ^2 l# Eunhonest-service
$ I/ ~6 I) B- W  poscillation
, H8 d- g$ V8 k  T( `rand-dynamic
# q5 ^7 T% n9 j1 D( K- ]4 C8 {9 l  Q], l: V9 ?7 e( s4 m9 p
* F) Z8 i# B9 h# p8 Y. r
turtles-own[
8 e# u0 C8 W) u# {, Qtrade-record-all
8 ?' `: h: \% L% ^;;a list of lists,
trade-record-one组成
1 o# Q4 U4 s1 |+ }8 ytrade-record-one& ^+ n  F: `0 J! _8 Z: ~8 w
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- e8 H5 N; |3 y6 p
8 G3 S# }$ d. y+ w! _' a" K;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
2 L* Q% r! h, w) S5 i' E# M. P6 \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/ A: J8 d* |; u/ B# o
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
6 o" j  v2 X7 O5 Z/ }; D6 Rneighbor-total
. h1 m; G' ]- W3 X& F;;
记录该turtle的邻居节点的数目2 t3 f8 A8 W: Y0 K$ Y/ C
trade-time0 C9 z9 O+ S+ ?2 ~4 G
;;
当前发生交易的turtle的交易时间
! G" {8 u$ j/ J6 K5 ?2 L- A( K, R- G: tappraise-give
+ P) n: X" i, Q;;
当前发生交易时给出的评价+ x6 h) s- }# {; N
appraise-receive& _/ l1 Q! G2 a# Y
;;
当前发生交易时收到的评价
" a8 b+ E& f- _4 j% a$ Mappraise-time
6 A: A5 ^& c6 F! e! }) R! X  V( j7 _# V;;
当前发生交易时的评价时间
- n; G' j( G8 R/ J# E- L. ]9 g7 T4 v; @local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 f+ q3 S1 L8 m5 A& n# ztrade-times-total
! t1 g+ F$ s) e" O;;
与当前turtle的交易总次数1 j- `5 X# h4 j* W3 @* C
trade-money-total
2 l2 ]; f4 O+ t0 \;;
与当前turtle的交易总金额+ |; v; ]( P7 N4 s
local-reputation% I7 U( |+ l+ Z$ t2 `+ ^; p
global-reputation
8 A! [  K( G0 [) r+ d$ ]6 ^$ ^& A4 Dcredibility5 }; G' m! g) U$ D& r) V0 f
;;
评价可信度,每次交易后都需要更新
, P: P! q+ O. M4 f4 W. ]1 Lcredibility-all! K( c" T9 y7 n, ?2 Z; z* G
;;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
4 b$ g6 q1 l: y7 h* f* i- ~8 u$ y# g
;;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
3 Y8 I8 Z: y3 A. z9 B3 Qcredibility-one
' a3 j1 D' C' B/ I( p  ~;;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/ u& e9 c- H( Y: P# M
global-proportion
! ]9 Q' P0 z# {. V# Lcustomer7 t8 J4 F( @, P; {3 y$ b9 V3 q
customer-no
0 P( ^6 `" W3 r  v9 k8 [trust-ok6 r/ `7 I  L6 s2 C0 ^
trade-record-one-len;;trade-record-one的长度! y9 q% x( |: L/ ]* f7 b
]
$ w4 d7 f0 Q* e& ?7 j
- j( c+ e* P" q' X7 p;;setup procedure# o  l6 m9 P' C5 E: b. U

; m0 I8 f  I  u$ |to setup3 G7 ~3 }% `7 g. ~1 X

6 W7 {; b; w1 S, I3 G0 s! |ca
, Y0 f9 ?! J: T
% V. x- `/ U% B  r  T0 w
initialize-settings
6 M! k2 [5 Q$ c) u8 G$ |# Y
4 {( Q7 k& V/ V. U6 X$ R
crt people [setup-turtles]

5 L0 M) @9 ~- i- v& F; s1 H- P. r' _8 v# V* K
reset-timer

: I+ A9 e& @4 Y1 h% b4 z8 n- l4 H* P4 A! y
poll-class
6 W$ c7 V7 T. y# F- ]

# U' @6 K3 V1 h% M% Lsetup-plots
4 H; I9 j* n+ y8 u4 [% I

0 v8 S2 K. b; M: Ydo-plots

% M: {; U; {1 ]" ~) u6 aend
! U/ y2 D) V3 y1 F, _, I! q5 g: c, z* T; B" \
to initialize-settings! D) f. }) s5 k3 @5 R
& w1 j; _3 O5 r. w0 e
set global-reputation-list []
8 L2 v2 T. y3 c6 p$ t* t: Y) Q
- H; s" ~! N3 V8 c, p& h. |1 l
set credibility-list n-values people [0.5]

1 L0 I/ U: c% x: l2 X
# K4 G0 k9 o- y. mset honest-service 0

; I6 U/ d0 a( r& {% O5 h( t2 W! Y* i( d8 l# r$ W  s
set unhonest-service 0
- w; Z$ P! U( |; m7 N

+ _$ n8 a* T! P1 T+ X0 K3 }set oscillation 0
- r0 U' j& o* g& g' Q

9 Q/ l2 E6 z" h" t; w) Q3 L; @) Kset rand-dynamic 0
$ X" A- A! N  l* b4 V: _! f
end
. k( j5 V3 N  y; K9 K$ Z# g5 n+ D& r' u$ J( t, k
to setup-turtles
1 Y( E8 t# ]+ }4 @3 R" _set shape "person". }2 ?( K6 ~# |+ M. r, s
setxy random-xcor random-ycor
! C! Q- e4 ], g( P8 r0 }set trade-record-one []
! h" s! z+ w' g) Y$ _
, J% T& w" n: f. W& U
set trade-record-all n-values people [(list (? + 1) 0 0)]
  k" a  I( G/ P  `
: R) O9 P8 A/ L
set trade-record-current []
5 L3 U& g8 F% V. \, @, Hset credibility-receive []% p$ L& o# w; z# j/ V
set local-reputation 0.5$ u/ e( @# m$ d; l) l
set neighbor-total 0
2 _; x6 M5 B6 eset trade-times-total 0
4 A+ P% Z; h5 i6 `( q9 e" s3 ^& Qset trade-money-total 0
. }( D9 s" s) P# U; _set customer nobody" @% M4 r- Q7 W6 p* {5 E
set credibility-all n-values people [creat-credibility]% R8 k4 W2 g: v0 R; G8 ?
set credibility n-values people [-1]
* t. l7 j# J: d3 m. }: Z4 p) r, Dget-color3 Z, c" p# j+ J" S& X
4 W# _1 ]( E4 N
end! w2 e& A, d! J5 _9 o0 {( X

; F4 y: e3 r5 U! M* |5 wto-report creat-credibility/ e# m0 Y; Y; T
report n-values people [0.5]; `: _$ F2 H# D3 ]7 E
end' i0 N% j2 a2 u" |& m5 y$ n! n5 q

& ~% u6 w3 D: D0 `+ L0 r) @0 Bto setup-plots
& o# n7 C1 w# n$ D+ v
% C% z# z: l/ F8 e9 l+ Gset xmax 30

1 P6 V  s( ^' ]" y3 ~) O9 v2 S# z# t5 j# W( v( V
set ymax 1.0

7 Z6 a6 [+ C# C) u* M: ]# Z% x
6 F6 h# d+ g) E1 N; I. Hclear-all-plots

: R4 j* b5 y$ L
+ r6 C: \+ S  t; S$ _  Qsetup-plot1

' \  D0 l# B$ }' Z1 s/ d& {$ o+ M
/ [* u4 w7 r' ]' Ysetup-plot2
: l& m( L3 M4 T/ n) {
3 R* C6 |: P5 x; \: \
setup-plot3

; F; n8 n* [% f9 _& T' send
- T8 `' r! x- o6 I  I1 b/ B9 P" o. x0 d( ~0 B& W
;;run time procedures
+ ]4 b) k) k# d$ N5 f  C6 k. f
2 ^& u: s! F! e8 I% Kto go
8 ~( b9 b* M+ d, W. Z
" j2 I: \5 @9 u2 E9 b0 Oask turtles [do-business]

! C5 O1 W) M* D# p' Z7 Y! B& T/ Uend
4 m# K0 ^1 r8 `; w4 W) d% }( ?# g+ J# g
to do-business
  q6 o5 {7 L% G& c; s  y8 b
8 u6 S/ r* |+ v1 ^! \* H- G+ T

; C- w. v' C6 ?* W+ X( |$ ]9 ?1 w# Frt random 360
$ K; T% ]/ |* W/ [
( c6 D; S$ |  U
fd 1
2 E& ^. V- S" F
8 T! g$ {* E) E2 Y
ifelse(other turtles-here != nobody)[

; k; A+ k. s! i4 @, i- T7 v
+ a3 _( B- v* G2 {- e1 aset customer one-of other turtles-here

4 @: i0 f5 x/ h% ^2 F! N$ c! K
$ P! Y2 |* _% m( d% |, b) ~;; set [customer] of customer myself
4 [0 f( T, A2 }1 t- m) I

: I+ ?$ x7 _5 i* x6 [1 K. eset [trade-record-one] of self item (([who] of customer) - 1)
- h! G/ z: H; l2 ?  O[trade-record-all]of self+ Y  W- Y2 Z" P# T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  B9 i  o0 k8 @" }. q4 s6 L! V; u
  D4 N# m- ^: z0 L0 |5 Kset [trade-record-one] of customer item (([who] of self) - 1)) m; x- h1 D3 N: E3 r0 g
[trade-record-all]of customer
( y( s8 s6 n4 E0 h# u; O& ?2 n

$ m& p" Y* z1 v7 `6 F# _4 t6 Zset [trade-record-one-len] of self length [trade-record-one] of self
; i( y- q) `+ k4 G' W

  [; C' n) l& a+ e+ N& Hset trade-record-current( list (timer) (random money-upper-limit))

6 w6 k2 y8 p7 K. y7 u( @* p) a5 Y9 ~/ [/ e+ U8 @
ask self [do-trust]! L4 d5 d1 Q+ H; f/ R$ W
;;
先求ij的信任度
- F3 F9 T- u3 v5 L" v% {- ]) C
, I7 n. E+ b4 ?; X& o4 Sif ([trust-ok] of self)3 }" K% r0 B  `" M) A; O# A( |
;;
根据ij的信任度来决定是否与j进行交易[
& t# m" }1 A4 B6 Q# l/ sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 v- H- j9 e+ L) T9 S$ E9 A

7 T6 A. M8 q& I  I. U[

6 S) d; G/ a6 Y: k1 q# B0 n; A0 n3 F; W' I
do-trade

0 E- L0 T7 y3 x: u9 S& z0 S& l6 F% }
update-credibility-ijl
8 c% d/ D0 a+ }# [2 t; G2 {1 G

6 Y6 l" E- U3 L( h6 Q$ bupdate-credibility-list
5 }- @: T9 L2 G0 w" R$ w6 A" r) G) r
, L$ I) K/ F$ u

* R' C* M9 S- F5 \! uupdate-global-reputation-list
! d/ }$ e2 O/ |7 L: E
0 C- A, x' T& O+ ]. j5 I
poll-class

8 }% p" w; `' z5 H0 R
& D. `0 m9 c# g+ Pget-color

5 m  s$ N. c9 d
- [! }# z8 T$ q1 j' \/ ]* ?]]& T8 i' p6 x& k3 i# q# K  t

( \8 B7 f9 i. [* S; x;;
如果所得的信任度满足条件,则进行交易
5 V' I1 D6 G9 I+ ]1 y: g: c3 t: m5 R, y' R1 r
[
2 H: K8 Q/ S  T' l0 r0 Z

( E9 o$ r. A( g# g* R+ urt random 360

- I7 s8 h. y+ c+ n& c) i+ T& r' S! a  u9 B1 u. G+ J0 ^0 y6 [
fd 1

1 M' I9 }" E: t3 a& T% M
, a. S2 F7 @. P  E* e]
3 Z, U8 k4 s" O+ V
4 @! Y3 {" ^& o- r  d0 E- A# `9 t
end
1 }- k$ @" `' k' i
* @4 R$ f7 ]' ?* f' l
to do-trust
4 i# B' Y  ]- i) h/ X* ~1 Nset trust-ok False! |  q4 u# X' h
. `7 E- ~" l1 [8 v5 z+ f, N, A
6 X! I( q$ [1 F2 R+ r
let max-trade-times 04 D# N1 _1 X+ b: D0 `+ P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 H: E. N7 H( I# e) elet max-trade-money 0( {; d4 u, F7 Q: z) v5 D
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  r% D, x: K! r
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), c1 N+ E+ W6 K, S; }/ |) a
+ }- v  o6 I; `& [% A: Q

2 v% [9 n/ O' c& oget-global-proportion
' Q. e5 w5 H9 E1 }. I# A/ Y, }let trust-value; x8 i3 p- n( y2 y- c* Q, B" O# h! B
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)

1 v) i( J& O* S8 ^1 Z$ nif(trust-value > trade-trust-value)
/ u2 S1 A* l9 Q[set trust-ok true]' I8 _+ {& I1 P, _% u
end
, M3 I0 W: @# o' l( {8 m) z" v2 n) S
to get-global-proportion
& X, p. s% F- ]. D; t4 @ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), t- W/ a2 m7 R% Q1 N2 R# w
[set global-proportion 0]( ~1 D8 x% e5 U2 \% R
[let i 0
6 i: ^, M" d9 H4 P: a- f2 _1 Olet sum-money 0
6 W9 O  L! f4 u8 Y0 f! r6 Qwhile[ i < people]
3 R4 G$ v. q! |- [. }- Q[2 X) m; A4 J0 d. p' x
if( length (item i6 w* }, E) w4 D
[trade-record-all] of customer) > 3 )
8 }# y; @; n* v) i- n: _9 c' e
[& i. A" r& ?2 k4 D# O0 j, K
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ m' c0 [- {% q! {/ d: o]* o1 A0 D! g2 W4 z% B$ C
]0 l3 I/ }/ X$ {: U) Y8 ^' X. Q
let j 0- ?. n" e( U0 z8 q+ K
let note 0" w! \7 X$ H7 |( I; `
while[ j < people]
; @1 F; @/ i) m3 G7 d" B[8 Y! Q% K" R) G$ X4 v
if( length (item i
' r+ Q& j7 R: Y7 Y% S- }[trade-record-all] of customer) > 3 )

' p- T! I2 g6 Y% p8 J* b; h[4 `! X. t; i$ }1 Q& y( T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" E5 w4 U* g! ~5 C( A& i% U0 x, R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& [$ ~# c& ]0 |3 Z) l) D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- ~9 x# J  x4 m, r- X]
& B* E9 ~2 b9 ]* W- j( s]4 F! z! p6 h8 G% s/ {( I
set global-proportion note
: r* l) F: O, b! O]. `% S. C& x- c8 T- T
end
/ I+ F5 t! @8 F% K3 ~
0 ]3 B) T* e* d4 M/ q% H& fto do-trade
' l: F6 j5 t4 r;;
这个过程实际上是给双方作出评价的过程
1 _0 l: W+ ~8 W% ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! O5 H! K% T. n. f5 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; I4 s& ~; l( U* cset trade-record-current lput(timer) trade-record-current
  j9 S. C' O: E  w9 Y# \;;
评价时间4 x3 a8 W" T% ]! C
ask myself [
7 `* N: r: T6 q/ G  r3 @update-local-reputation
- C' n5 A) G" ~) c0 H" d; Xset trade-record-current lput([local-reputation] of myself) trade-record-current
# N/ r, q* g4 b: d0 B% ^]/ A" h) `; M" O+ [  ?7 i% ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& A8 T  \; s7 z;;
将此次交易的记录加入到trade-record-one: P* E6 i) Y, J# C# S
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 l" [) a/ L" a% {, T# p
let note (item 2 trade-record-current )5 [& ~$ N% u% f9 V7 o+ U
set trade-record-current
2 q  o. A) {  w, U9 |: ?$ `5 u(replace-item 2 trade-record-current (item 3 trade-record-current))

5 Y0 Y  d1 L2 b  ^" k+ i' Fset trade-record-current
# t* [7 y2 ?* l# q* N4 \(replace-item 3 trade-record-current note)/ d" {6 o9 I* v7 L8 k# Q) P

% |4 R1 X( ]+ y* I1 w+ Q
) z5 J) X% p) S5 h) N  Z
ask customer [
1 _8 r6 z0 ]$ E1 nupdate-local-reputation
. j9 R$ k, p  ]" {set trade-record-current
  Q0 n! p( Q$ J) ?. Y1 f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- w) `, E. |7 d; \
]
& M; e) y* ^! W! D- S2 n' g/ {2 |$ ?) w7 i* ^5 W% Y2 `% O
- y& U3 l1 G& @( M5 r7 S, b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) n) r6 V# t! ~3 p3 G
5 R# ^$ A5 g0 {. P- X! e4 e, I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) \) W, {) x) C# K( y  g* G;;
将此次交易的记录加入到customertrade-record-all' f/ G8 S2 y6 L2 Q! U9 O
end' `/ h' j; I/ A7 N% c

# T$ P9 @% c3 [6 W' v: bto update-local-reputation
7 V+ m) p; N; i! k. |set [trade-record-one-len] of myself length [trade-record-one] of myself
, j* A) A3 b) m' x; ^- G
% l) S6 X7 b' A' D# A" w- M
+ w7 [; T4 P' F9 i! A* j;;if [trade-record-one-len] of myself > 3
3 w2 y* R' I+ k, p
update-neighbor-total+ T9 c6 r3 |$ V
;;
更新邻居节点的数目,在此进行8 S, |( Q- g2 k' C9 M9 g
let i 3% F4 j! }* b1 J' l& j# x
let sum-time 0
8 f- z* w1 P8 Y  T8 swhile[i < [trade-record-one-len] of myself]' M" {% C8 s+ J' f
[- u, m" c  T5 J; _: a3 t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, z2 _/ t& p" o. O% e" Nset i
( U( W3 T4 E9 t3 f: V( i + 1)

% Q" ?6 S* f" _# G) ?/ \2 L" v+ u" z]1 U5 y9 ?; }- B0 X. w. L, E! ~
let j 3) _( j/ y$ f: c* Y. {4 b  x
let sum-money 0
' Q9 B% V  H, c& cwhile[j < [trade-record-one-len] of myself]
1 ~: H- g; f+ d6 g6 `- {[6 Z+ H# T. x5 Q5 J- m
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)+ r# A* I" U, c
set j
- B, R! S; ^, ~( j + 1)
' s/ s6 |. ]  g( v& m
]# N% I9 A# i, f% ]* z5 ~
let k 32 k2 A! {0 P8 o/ t
let power 0. m2 n- V3 S9 d, S* z- q
let local 0: W" Y* C! \; K% D
while [k <[trade-record-one-len] of myself]
" X: F" R/ B! O  j- v/ U[
* G7 S5 j" g9 cset 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) / \# X0 O9 P* F1 C' l( V
set k (k + 1)$ g! T2 j4 ~) l6 P2 @, U9 g. i
]
4 k! F$ `% y% s- y0 G  Tset [local-reputation] of myself (local)
" r; P0 F: a% ^$ Aend
; ^- V$ n1 Z/ T, W; J
/ y1 m6 p4 b- t/ p5 s! k9 ~to update-neighbor-total9 _6 }, P7 z6 o% K. u
5 z: e- f+ I: j
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 ~  s1 L' H8 B( j/ N' z. T8 Q5 R8 C$ L6 d4 t6 s) T5 c
9 b; F3 |" n; [. k# Y" M
end
8 e% h/ g' n9 j3 ^/ V) E) w# d$ p5 r/ n
to update-credibility-ijl ( J+ \9 o+ r# O8 f+ q+ A/ Q' G0 |

0 O# o8 I- N! V;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。. V9 _5 _* }, F) x) ]: r
let l 0. ~  `3 ?6 p% E( a" v
while[ l < people ]
* B3 E  L# g7 K( m9 Y;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
6 N  A5 ~8 N; L[/ E6 _. ?/ U. ~5 s. C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 p8 p2 B2 g# {! M) E  T! R% xif (trade-record-one-j-l-len > 3), ?; p7 c. s4 p$ p, ?
[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
: X$ _3 e4 ~- C0 ylet i 3- ^( ^. T- I) N: v) r. d
let sum-time 0
# G4 ~* N. `8 {& ]+ w* b: w4 \while[i < trade-record-one-len]; X* C; A' E& T* p# H  u: ?0 z
[
- p, }9 q* s  s- F- z( Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. `. A! o, _2 S$ eset i" @) m; Y* T, l0 \  w  |
( i + 1)
. a0 y8 |) u8 B/ D7 X2 o
]3 }0 L$ i* g' S* O
let credibility-i-j-l 0
! f( v  Y, g1 J4 |8 {;;i
评价(jjl的评价)
0 j' g/ j/ s) E, r' j: P5 G$ Jlet j 3
5 T) E- q  F3 s! o) Qlet k 4: i. `# b. r5 q% t& R
while[j < trade-record-one-len]: \: s* v9 l; a
[# p* B# f9 z# Q9 R, 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
& u. [9 J: j8 N' ?- }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)
7 \; r. v/ A9 x7 R& F$ w# g; jset j; r& z4 z/ x; K
( j + 1)

! C" O: ^8 U/ o0 m6 Y* q  v/ `]! ?* Z9 d7 o# k0 N* z" R% P. E/ t
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 y* T  e% O8 i2 U, H  \" ]% W9 \0 O- }  ~7 N
# d: ?% h# V% T# m7 ?( |6 P; L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: T2 W0 K( ^0 `; \6 L9 T9 U2 e) H;;
及时更新il的评价质量的评价
+ n" Z1 [0 s# g' l  F% o& mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ R+ P; U! ~8 tset l (l + 1)& @9 f, c7 L% h
]9 m% o5 ?9 T$ n
end
: K6 N; o9 O6 H8 E( F$ n8 n- S& d6 o* s+ h3 k
to update-credibility-list9 g9 _3 ~, L0 D* H
let i 0) U( V4 ^$ I) ^  o
while[i < people]  _3 O- |1 T2 X7 e/ n6 e9 P& A
[
" A, f# H# V+ Q' a- f( Slet j 0
: c* `- R, T# Slet note 0% ~6 Z3 V6 k+ J* K' m  }! N% r7 b- u
let k 0
2 C5 w& L/ S0 y;;
计作出过评价的邻居节点的数目
7 q5 |+ z6 N! r% \while[j < people]
. s0 F8 J8 ^1 l& g# i3 p+ W4 [3 @[/ N3 R2 f( `7 x! l% @0 G
if (item j( [credibility] of turtle (i + 1)) != -1)
* z4 q  w- Z9 Y# q) A;;
判断是否给本turtle的评价质量做出过评价的节点
8 |* d! l5 J& O; l[set note (note + item j ([credibility]of turtle (i + 1)))
) y6 Q; X! x, D% g6 w/ c% ?: d;;*(exp (-(people - 2)))/(people - 2))]
* H- L+ N! h" s
set k (k + 1)
' l7 x+ @6 j) z$ W9 L]/ K8 Z1 ?& k" l3 q0 g; ]* [
set j (j + 1)/ ~5 P  n2 o- v& A+ F1 D
]. [$ I3 ^: K: g
set note (note *(exp (- (1 / k)))/ k)
$ f1 ]* }' C1 i( t4 w+ v2 Bset credibility-list (replace-item i credibility-list note)
3 D* s# s# P6 B3 J! iset i (i + 1)
6 Y5 M+ Y2 V* e$ S$ _]
% x( a+ }3 ~  b: b: Zend6 R3 X: F' j& c  S! ]& M

: k9 c' F) ^$ H7 U: E' y; V" [, `to update-global-reputation-list
9 \' Q$ q! S8 F: X; ?! flet j 0
" b; S' b. w5 P7 t5 Y6 d" Y; _* fwhile[j < people]; N# w2 {, a( ~) m- l# _
[
$ p$ w, J, S" H+ Y* w1 z" hlet new 0) `( H( h' m8 V4 L0 F" r$ w
;;
暂存新的一个全局声誉
) ?9 |3 K4 |' Q2 O7 olet i 0: G1 }* o0 }3 y* t/ l& L
let sum-money 0
! ?5 w5 O1 ~+ S0 A1 U* Vlet credibility-money 01 C: |% n! z! V+ V0 U9 Y" e* h
while [i < people]6 ?  i& Z  C* p
[
" f0 X/ N" j( {1 C1 Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& t. u& ~( b" A# D1 u
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 w! D) u7 x. V0 r/ h6 ?- b- [
set i (i + 1)
% @$ s7 B# Q3 Q0 x) ~. Q]
) z; F# ^7 X1 n6 n' G2 w3 G$ Olet k 0
6 z. \8 J* k, L2 u5 V0 Tlet new1 0- u: r6 i7 `* F; [- U6 ~
while [k < people]8 Z6 L. M' o% _' t
[! c, \3 w6 n- s+ @
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)8 P. X" a) _! y( z8 F, I5 V  U
set k (k + 1)
4 D( \: C) @9 _9 m- _]
8 R4 p# E8 `' o, _3 [6 Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 i" Q, |1 d  Q% b) J9 G" W; A
set global-reputation-list (replace-item j global-reputation-list new)
+ @; Y- X: x& U" `: b, o: @set j (j + 1)
1 \. B% X  _. G5 Q8 V- b]
' o1 S4 F7 A% C( n& K9 j5 \end
! T6 R  b9 c; ]( L7 ]
( H0 g- v, }1 d. K
: t; F) }! S& y+ o! H/ R9 m% v& O+ u: p) F/ T, _- J
to get-color
4 ~( U* h: L2 `" `8 ^/ N8 A  C0 R2 Y8 C% @; J# D1 a. z
set color blue
0 Y% |  V" q" l
end
: f) {0 e- B, I6 Y0 z: o
2 P* R1 T8 R  Rto poll-class6 f1 T8 h- _3 i, O
end
' j6 y, @* J7 ?5 v  W6 @' `+ V% k1 W. t! \- L+ h& D- o
to setup-plot1
1 E2 E, h% u7 Y5 D# P! E$ X: T8 R
- Q- @1 G: f/ D1 m1 gset-current-plot "Trends-of-Local-reputation"

8 d  Q0 x* k! y; ]) s2 Y# L& M
0 N3 w) z2 n* Pset-plot-x-range 0 xmax

& x& A9 t$ R6 w* ~. x# {* T1 s$ ~' f$ u# Q+ o3 w# }7 k9 Q) g3 D
set-plot-y-range 0.0 ymax
( L" W2 s! A7 m/ J. t% O' x5 `
end
3 c$ Q4 x8 u" q* ^# g
' H+ o1 u6 i* A7 Uto setup-plot21 N' r# \! F( W1 l" R6 W' c( G. W
$ v* z7 b' b* @9 _7 u
set-current-plot "Trends-of-global-reputation"

+ k3 `, o: h% _* t/ D' ?
* D' r7 c; W- I% j8 \  J# Iset-plot-x-range 0 xmax

  g4 k( z4 {/ g) z8 m4 ]: b' E1 B; j0 g% w3 U
set-plot-y-range 0.0 ymax

. Z4 P  y8 h1 F3 |. X) }) ~0 Aend/ @3 U2 F2 J2 }7 R
5 J) B. F9 R" V& w1 t# N
to setup-plot3# o- {$ ^: k# q7 I2 |2 W4 Z

$ T; W+ X% {* v0 h: s( Vset-current-plot "Trends-of-credibility"

& c; W/ p8 k2 N: c& Z
8 v- C2 x4 N4 _+ ?set-plot-x-range 0 xmax

$ y# C4 _% I# L/ \0 ?- c. r7 \
( ^0 U# {& X: h, Y$ I  N5 `$ R( _5 eset-plot-y-range 0.0 ymax
6 D3 X; }; U# `0 u( Q# ^
end
9 _; n8 ^0 I3 D0 W3 X
( O$ }0 \7 r5 U  @, ~to do-plots0 h  n$ {- s& q
set-current-plot "Trends-of-Local-reputation"$ _# T0 g5 {4 q
set-current-plot-pen "Honest service"8 c+ a4 x" ^" `2 z- L
end! k7 O2 Z; K! ~8 c6 [; I

( b! m) D* t5 {5 R[ 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.
4 f+ z# k: F, s! U' i
7 L  l2 u& [4 g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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