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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:: v5 p& K( Q) j! J( Y+ v3 a" G& t
to do-business ; F/ V, }" W2 C5 O
rt random 360. o' p0 j( {! Y- O" V
fd 1
1 G* E6 |! d$ X4 O( P3 G$ {, o ifelse(other turtles-here != nobody)[
' M% a4 T, h2 v: E$ c   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.
! S" n" M7 K9 a9 l1 N   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! W$ B! Z' a$ F9 {9 A   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 j# i0 N0 q7 V   set [trade-record-one-len] of self length [trade-record-one] of self
% ^6 {) N& s8 ?; n% k0 H: U   set trade-record-current( list (timer) (random money-upper-limit))
7 Q- s( |" n! n" y
4 q2 W& m  i! K  }问题的提示如下:. V  Z  \# ~+ ]4 e# Y3 d
' o2 L3 N" G& a  ]' |, T) `
error while turtle 50 running OF in procedure DO-BUSINESS
4 E( j# W; Y0 v6 a  called by procedure GO) R; u. ?; r/ ^( e8 T
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 Y( w( W, R. F5 x& A3 W
(halted running of go)
. O( b$ I, b& ~& A8 A5 P
/ m' i+ b, ?4 b; @5 b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~~$ s  Q8 X1 d1 @, N
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教# @2 M2 C3 u+ C/ d7 _
globals[1 G8 A# l& X  h9 {' v
xmax
5 _# k, f2 K7 S& V& ^+ Uymax4 `5 Q/ \; e* y% E2 K# q1 C3 b
global-reputation-list
- F) L# z' y# v& O# w( @9 d, i# m  A: g
;;
每一个turtle的全局声誉都存在此LIST/ e$ D  s  j6 z& v7 {6 Z
credibility-list3 \* T3 m7 j! ^; g0 v2 J/ _8 ^
;;
每一个turtle的评价可信度
. w; @- v7 l" d1 W! q' e4 Phonest-service
1 e! O. C  s( e' ^unhonest-service5 {/ v0 A  s# I9 o: x8 T) H
oscillation6 j  M2 E5 J% w) i7 `7 R4 l1 w: E
rand-dynamic$ [' i5 I$ y5 @5 W' M* i( K
]9 i) r( H" A0 j* U7 w
2 ^- |2 L+ B, E; W3 z
turtles-own[) u5 f8 \/ k/ w. @3 _
trade-record-all
- ~1 T2 b4 ~2 f, ~; c$ h;;a list of lists,
trade-record-one组成
1 C8 `5 S/ f* U, h- u6 b4 Btrade-record-one( S" h2 h  n  f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" h* B- q# w4 `; h+ P4 Y8 |; h/ e6 l' A9 z) Y9 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]]
! ~4 ~7 Q/ Y5 B6 Y% qtrade-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]
3 x; l; Q4 a: d; Z7 k4 H, B' i- H9 Dcredibility-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
1 X& x6 E$ S6 M* L3 K4 ~7 Xneighbor-total- t& `1 \( s% Y( ^% n8 w- {
;;
记录该turtle的邻居节点的数目+ c! E' ?7 O/ K- w4 G2 T5 X
trade-time
' p3 K& F1 t) V4 ~;;
当前发生交易的turtle的交易时间
5 b" M! l6 Q0 l: `! Wappraise-give, l) m) s: g3 P# T. ~8 d
;;
当前发生交易时给出的评价
& x6 `* B* e" }' r8 happraise-receive: b0 l. R: z/ j9 n/ d
;;
当前发生交易时收到的评价
1 J. x$ E. K, _/ Xappraise-time9 f% _* `; l# j; T8 z
;;
当前发生交易时的评价时间2 N4 N. n/ J7 |$ O$ K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( a! J+ S5 }" {
trade-times-total
1 [; @* ?' ?# D: M& }! y/ N;;
与当前turtle的交易总次数
6 t* ~* p  z! Jtrade-money-total
) A* _1 K( C/ Q; ~;;
与当前turtle的交易总金额2 R% ?8 ]' G" w# s
local-reputation
* u2 Z) _8 l0 l' H/ S4 E: h& qglobal-reputation2 X# c! i7 \) x! k* l* j5 `7 x
credibility
$ W+ A0 B8 |* D2 F9 ~;;
评价可信度,每次交易后都需要更新  F  v- ^2 d' _5 ~- B0 K8 g! q1 p- x/ H
credibility-all
, ^8 u4 i( a7 M) C* q5 `+ L;;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 F+ @, b: Y) l. w. X* F( g% p
" ], \* f" o9 E4 {" \4 W2 p9 ]
;;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0.51 i% H$ `. }7 x3 n0 c
credibility-one
: [. }# r6 E/ r2 c;;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people6 E7 g9 D" r3 w. C5 h
global-proportion: [9 X/ O8 O& @7 j3 Y( O
customer/ \# N9 L' L1 b! R$ T
customer-no
4 o: n$ _8 v; \) Rtrust-ok
/ h. r9 N' O" r5 S1 m. Htrade-record-one-len;;trade-record-one的长度( u* o0 _. O& E' [2 G- C$ j, y; w
]# f, I! X7 M6 t" q( [! f
% t1 x2 {0 N3 I3 L
;;setup procedure; A9 O1 ]& v/ C* J, O

: O, X0 y- M' V3 e) M$ L. \6 G- `+ uto setup
- `' Y% [/ C6 t: N1 M8 Z
! U6 B- \- C5 I" z. F: C$ lca
( D2 [7 u& A- P! R; I6 ?
- @- g* T/ L4 s4 B
initialize-settings
& m2 R9 L- \3 m4 I0 z4 c

& I' b0 N. E6 Bcrt people [setup-turtles]
0 R' i: A1 c; ]0 x  r' D
! ~$ E- T5 ^) U/ S2 s: ~* V
reset-timer

2 @: S1 _8 r5 m4 s+ R8 Q
* Y6 S; x3 Y$ }% W; ]" Jpoll-class

# T+ g  T4 n1 Q0 _( ~# l% b" R: r* V# @
setup-plots
4 V. s: z9 v8 j1 D5 _4 k6 U8 ]8 G; d
1 s" n7 J! L: K( g& A
do-plots

8 `) g  n0 W5 g. o3 k+ p. Cend% R3 u- G/ ?* A- L1 R

6 X# l: F6 L3 ^/ ?to initialize-settings
: @# h8 ?- m4 G- u. ~% w, h1 @2 ?8 |7 D6 [+ Q+ D  e7 {1 H3 T
set global-reputation-list []

! |$ t& X& i( v# x& F8 B3 d: h# f5 a# l1 S! B4 L1 R) {
set credibility-list n-values people [0.5]

; S7 o6 N1 K1 p- G2 V+ E7 B8 B
9 |8 N0 U  o( s2 \  [set honest-service 0
, `- `+ p# ^7 Q4 Q6 a1 [
3 m! c" \; [$ X
set unhonest-service 0

6 J, t, t, Q! u
" q! j0 ~0 {6 ~2 Y  Kset oscillation 0
! v' v" e* o+ g8 V* p

9 Y/ z# u# d8 fset rand-dynamic 0

9 i7 a- {5 y) V5 G9 `9 Kend
* V8 t' l. G3 H  G2 O: ^% t
: B  R8 Q) e2 M/ s( [3 B' nto setup-turtles " U/ s9 y8 D1 b7 b$ c
set shape "person"
) q' ~, ^! ?3 t  g$ isetxy random-xcor random-ycor7 d4 i( h% }5 Y# N8 V+ i
set trade-record-one []  _/ n* o2 D, s, D

. |" N+ ^0 O) j  Nset trade-record-all n-values people [(list (? + 1) 0 0)] ) p1 n7 `$ d) o9 o# r" t/ d1 ~
; ]) h1 X7 J  a- _' G; E1 k- u
set trade-record-current []
( e% A% }: {) K0 t% n. i5 `set credibility-receive []3 l6 n$ P1 F5 E1 V  M
set local-reputation 0.5
( Z0 U3 Y( W8 C* ~5 Mset neighbor-total 0
6 m  \9 f" m  H1 Gset trade-times-total 0
7 ~+ s) h8 `% Z5 j5 x$ z& t$ y( rset trade-money-total 00 K- B* B; G' s. \! W6 s& V
set customer nobody* j1 ^+ U- c) L
set credibility-all n-values people [creat-credibility]
& Z' S0 n5 x$ u  J% Uset credibility n-values people [-1]
' }1 C! _. a1 ?- Oget-color
$ U$ `" Y9 G6 H( d' W1 o

1 M( e9 W0 [2 t" Rend
, m- O8 y/ [" ^. Y3 L3 D
( T, Z1 N3 L7 I: dto-report creat-credibility
8 M9 V& _+ _/ {8 V# _$ ^report n-values people [0.5]1 V- o: x# P( n/ {6 Y7 y
end1 Z) u8 D: x# f
8 P1 I  i" k7 D* I* Q
to setup-plots. y5 e6 [. I) Z7 o' d0 s) N% P

2 g. ^1 \" ]8 Yset xmax 30
$ a. E( q& P, j+ p' e* L

4 r& W, ]+ k( A+ v$ ~8 I  q) wset ymax 1.0
& u; y; ^& x' l' ], u$ B. g
% u: d( ], T! m4 Z0 }% u) r; m
clear-all-plots
* Y1 b/ E4 j% M! Z# Y" ?. F
# L% d- A0 w+ i9 W" p6 ^& }
setup-plot1
5 ]' ~) k' }+ N- C
: L" m& I$ X  _1 f5 w$ [- r
setup-plot2

7 \  H) g) D6 K2 Y" _
7 y0 w4 Z* Z0 \- D# g7 B! u7 I/ Wsetup-plot3
1 a2 C8 Y4 S+ X2 ]/ L8 U9 q
end( q4 [0 |. T9 \. L4 C
/ H% ?% \7 W: [
;;run time procedures) g5 o5 T$ H, v* B- \$ g9 J
$ [9 h- R  L4 k) t- V* a
to go( i, K- T8 c8 f
/ \/ v) f& g& a: X- Q; D5 p
ask turtles [do-business]
' _4 f! W( A5 j
end: q/ v. j6 {' _; p/ ]
' F/ e8 y1 ]2 q- J1 y( @
to do-business % p2 }' e" K& u: b# |

! P+ u2 B& |7 y" B: u# g% f$ ~( B1 @7 D& n) V1 \
rt random 360

* y# k" W  U3 R5 h" P9 C9 J: g9 F* b
fd 1
- S+ L8 ]1 h8 u% A2 _: k, k9 u

. C0 ~3 y) M0 e& F9 t$ W# |ifelse(other turtles-here != nobody)[

4 |! v  s8 q6 S5 Z6 D2 w, {  ~: r3 U4 O6 ~' B
set customer one-of other turtles-here

1 F! S5 }* O: S# i0 a# I$ P( ?3 m4 c+ B# j
;; set [customer] of customer myself
& u7 }( r# {8 \5 E) t* Z

. J/ {' b- [& v  |/ z- kset [trade-record-one] of self item (([who] of customer) - 1)
3 X, O) B9 ?1 o& K" |) k: E[trade-record-all]of self4 ~/ u1 L/ M$ |9 A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 b3 M% `$ }9 }% M' D- R

/ E/ _' v* b/ T6 A4 M. Bset [trade-record-one] of customer item (([who] of self) - 1)
. X. J0 A; \  p" v! C! A[trade-record-all]of customer

0 K# y9 `8 T- N# I5 U/ {3 d! S7 n' t* f% Y+ L
set [trade-record-one-len] of self length [trade-record-one] of self
! O4 Y7 m; V! i6 B
4 p) q5 }5 c* T
set trade-record-current( list (timer) (random money-upper-limit))

8 b( I  ^( _3 `  j/ r6 v! c5 X# X7 w
ask self [do-trust]
" x0 w/ j, g+ `4 W  y% Q;;
先求ij的信任度
: m4 Z& n# ]  x9 a' m) I. ~2 F
8 e1 E, E& ^" F1 i) M& Lif ([trust-ok] of self)
; z7 P) M1 i2 E7 e;;
根据ij的信任度来决定是否与j进行交易[$ z5 k3 i. \: V: e& I8 f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- s2 u% Z* j3 |' j  p

  K8 k" P. m' c/ i7 v[
: t  E% `2 b  Q; N$ i

, T& m6 `' X. b' }do-trade

3 K  e  v6 X. a( \* m4 `5 ], Q- ~# ~7 b0 s) d& N2 n
update-credibility-ijl

- W4 ]: F  C) {! T& v0 K3 Y+ c( F, w- [# a9 n3 ^! @/ f
update-credibility-list  y6 ^1 v' i$ j, A; p6 \

+ v1 M1 C' g9 I$ m- v' }. ?4 m/ G, T6 v4 W  J! t
update-global-reputation-list
6 n- i9 O) B& _+ Z6 Y) p

% o. n- i+ [7 d' x# t- ppoll-class

- Z4 n* A) U. u7 F0 V& q1 R* z% b. \+ Q' q' |( H
get-color

5 H% D: K" g# Q0 \7 V7 l$ I4 S! D/ O
]]
( \% f  r6 }/ w. ^& [& r
8 r+ y) x) B4 e  J, J$ o* n. H. M;;
如果所得的信任度满足条件,则进行交易
* d: N! w+ P) N2 `: N4 |4 N1 k/ |2 i7 l
[

2 ~/ k! Y  K8 ?/ r; J- @
1 j: C1 ~% S0 V7 _2 Y0 jrt random 360
# e1 a/ [1 n+ ]

1 a4 r9 l3 P7 a' _' i0 A% ufd 1
% l3 x+ X1 |3 @# p; j3 z
/ \- z- v! g' X& e
]

& U% a7 C$ E$ s( E4 j
% x. n4 w( V! s( V$ w% e0 Fend
! w2 A- Y4 N8 _& Q" ?4 t# L; v
% Y% a* y9 @0 U7 o5 U
to do-trust
9 T& r( v( U2 Q0 i1 }, j1 F  Pset trust-ok False  Y9 @/ q6 Q5 w3 ?3 @

9 ]- G+ j3 M- b% M
& {, U& f+ H( [0 o
let max-trade-times 0
( Z! g6 C7 ^1 j6 d, ^) o) Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# D! |. u; k' [9 [6 r3 j) x" {let max-trade-money 0/ c0 a) {& R' k5 a+ V  d' O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( Y0 {6 g$ B6 O2 v: D5 }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 J% j: E! s: ?/ j8 |( |$ |* \

' P  ]+ L2 Z6 Q- {

) U: u4 V% ^4 t8 q6 O- Q0 j9 Oget-global-proportion3 |2 G  ^- G6 r: m
let trust-value, m: f  R0 ^" \4 Z- o# o
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)

9 K  R( _) ?0 l# m. S( kif(trust-value > trade-trust-value). S+ U+ w* @9 b$ Z6 ^2 a3 G& P& b
[set trust-ok true]
" o. |7 ~; e; m/ D) Xend; V0 a5 }1 d9 c: _

. n$ K& ~( f  y$ Cto get-global-proportion" K+ l& ?4 ~" k5 _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( a9 A6 s: I0 B5 X$ N; s2 s[set global-proportion 0], B8 p) y' Z6 t0 \% U
[let i 0
$ q2 Y4 I5 ?7 `/ slet sum-money 0
1 |  j# u  E: I! r% ]1 Swhile[ i < people]4 {' t% |5 w' k+ C* z
[
- _3 ~( u7 Z6 O1 ~! d6 g) M1 ]7 Lif( length (item i% |( u" e; ]: W. L
[trade-record-all] of customer) > 3 )
& v% |' Y9 d: E8 a: e$ b5 [
[6 w7 w" ~+ U4 J6 i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 ~1 r; R! l- g0 y: P2 C- g
]
! h. Z- p6 ~: _2 h]9 }2 a- P( ^& t
let j 0
$ q7 U5 C8 w5 @let note 0
- r: S- {7 J  M/ J5 _" f; R' g" a! @while[ j < people]! T7 u/ ?" {/ u7 K* W
[
% T; O6 i5 D6 E" G8 A1 }4 L( L% kif( length (item i" m4 A! z1 t/ X+ |. ?  a. y/ a) w0 M
[trade-record-all] of customer) > 3 )

5 Z) K; ^: M7 K6 P# X5 A0 n[+ I3 u) q- W5 U' k
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 o1 A( h3 ?- A
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 w, o2 @9 v6 A[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, }4 c" c3 h+ K" }6 B& }8 o: T; G4 X]
) `& {. q3 ]# r9 h]
2 ]/ t+ p0 I0 E! J0 e3 `7 S5 T: Iset global-proportion note
; y0 W1 V8 H2 t" l! l$ i1 L" h]6 O" t7 d4 H0 E6 j7 K9 O+ \
end
% I! f( Z* C, ?& n- t- z
3 e% l3 t8 v3 G( Cto do-trade
4 r% U& t' `) z: J" c7 K8 `;;
这个过程实际上是给双方作出评价的过程
' w7 M( E! P; J4 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) A- A' q  H9 r7 c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 x3 y3 `- R1 H/ H) `set trade-record-current lput(timer) trade-record-current; U7 T) |' ?6 X- k
;;
评价时间2 r+ f8 Z$ ^  A8 {
ask myself [
  G+ u6 n2 @% U. G3 ~update-local-reputation" T2 d  \5 F$ P
set trade-record-current lput([local-reputation] of myself) trade-record-current. n* o5 J" n3 ?9 R7 d* p( E
]! I* q; s  Z4 b$ a7 l- Z$ M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: ?" P; }: m# M  q% l2 C3 m;;
将此次交易的记录加入到trade-record-one- t1 n0 R4 a! q. R1 _, \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% W  Z! u8 x% ^2 P! g- o
let note (item 2 trade-record-current )
4 X- L2 E" U4 K0 J' q9 Y3 v8 T$ Gset trade-record-current
% `0 N# \/ G4 ]; O' A' ?: B(replace-item 2 trade-record-current (item 3 trade-record-current))

% n) A# b6 n! Eset trade-record-current
8 W- h; h" o9 U8 Y/ a/ G* i(replace-item 3 trade-record-current note)# [6 F8 B' p, J" u$ W6 ^

$ K) v& [/ a" I: v* N/ f
- V, D/ k0 j+ t! E
ask customer [6 q# S& d4 i, y5 D8 l+ H4 @; v
update-local-reputation
* [* n8 L& V- Pset trade-record-current/ X: f/ q5 R- V. c" x- _
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 ]: U7 x  P( s2 C9 v2 x
]
% d9 `% O( s. S) i, p/ c$ [
' C6 ?6 D3 p6 b6 `* M

0 [* M) j% l/ H5 {6 |! hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) B' |0 \# _+ _  m. }
: F; d5 G1 j/ O2 I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" G3 l4 f. h' n4 o2 ^" o;;
将此次交易的记录加入到customertrade-record-all
# e, m( j! J2 W% x. xend, ^% M6 U& C8 M
2 m6 @" C$ K$ k3 g/ K
to update-local-reputation
: a# o" {( u1 D( v. oset [trade-record-one-len] of myself length [trade-record-one] of myself
$ r- Q+ [7 L6 C! e
6 t; H% I& d# f- B1 y  w- p( J) m3 |; z/ Z+ J0 \, F1 U. ^
;;if [trade-record-one-len] of myself > 3

6 T/ b4 P" x2 Rupdate-neighbor-total5 v1 y- R. B, t; ?; I
;;
更新邻居节点的数目,在此进行
% |3 d/ j' n/ V5 Q2 ^, }" xlet i 3, U; d$ Q) ]8 y, t; W' h
let sum-time 0
5 n! e! x9 p7 Q+ y4 |: F# E3 ?6 [while[i < [trade-record-one-len] of myself]
5 a% O# S3 Y  j( _  X6 p5 H[
- ^! \- ?* F' g! a6 t2 M( |2 p6 d* Oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 z! S7 D4 F+ U; w7 o1 B6 |, Xset i! s+ F4 o1 o0 u% K. d' ~  C
( i + 1)
3 n" j( H$ m$ T4 M8 C
]4 B) L: n* V6 z+ i/ S+ v: o; @- H
let j 38 ?9 R# a- E7 j' K4 b5 v
let sum-money 0
2 x4 Z$ A/ |! \6 A2 E% y! p+ F/ F0 ~while[j < [trade-record-one-len] of myself]
0 i8 @9 g' ~3 i7 B* |% a[
+ e4 \* t3 W3 B2 G5 y/ @9 rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)9 Z5 c5 Q( C1 j/ ?9 f  V- W
set j
( s7 D, c8 u* u' C% B( j + 1)
3 B4 e% k9 r1 ^* w
]
+ i) X* n8 }8 {let k 3; V: T+ `; v4 I7 E$ Y( \
let power 05 e! K; b: C; ~, W
let local 0
+ z3 W3 @( p% }$ N1 T* F- Twhile [k <[trade-record-one-len] of myself]7 i; m% K+ e- G8 G9 Y5 o, B5 w
[
& E" i- Y3 g$ U+ l; dset 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) 2 ?6 i) c7 g1 B' E) Y
set k (k + 1)
! @8 T. b2 f5 ]" O$ D4 r, T: u, X* l6 Y]4 O. b8 q9 g2 v. C% m& q
set [local-reputation] of myself (local)1 K/ M5 }9 T3 H8 ^' o
end) A, h- V+ Y7 s, n
' r2 j& S2 O& n+ B
to update-neighbor-total6 q* ^7 Z) h! y& ~. q2 `

  i1 [  M6 B8 z6 A( hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( V; Q/ }# \2 `/ i9 N" \; }2 O' I1 ^$ w( R. E5 S' @

5 _# N$ L5 O  F* M: uend
) H6 I) {- p- ^- h* \9 l7 `" Q# b" u& Z" f
to update-credibility-ijl ! l8 B% Z- T/ @  ~
7 A+ q- W6 e6 _
;;
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。
) V, m3 U( Y( p: n- w8 `8 o& R6 _" Ilet l 0
- Z/ ~* ^4 \- ~, G/ T1 hwhile[ l < people ]! F6 m6 E0 c2 _+ c7 |6 K
;;
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2 m8 A( R0 v  R6 e" U: F
[5 m$ t: _/ A; p& h
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# a( w8 O4 f6 ~! w, Nif (trade-record-one-j-l-len > 3)
# Q4 X. C* H5 Q2 \/ ^% N[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-one3 j' \/ v3 b& k+ J6 ?2 a
let i 3; l8 F, A% a6 O% B( [0 e. g8 K
let sum-time 0! P9 x  E" b- L1 I0 Y
while[i < trade-record-one-len]& X* S$ @) s1 j' f% @6 w7 i
[, ]4 n/ p3 S& [0 I1 l3 D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ {2 C8 h; C, q( I; U8 nset i3 J; z* R( [1 a0 }: q1 d* H% Q% N
( i + 1)
$ _  t* j0 Y% \' F4 i% q
]
3 F5 }5 K" E6 w( v$ ~let credibility-i-j-l 0! A8 b# m+ a  k+ N5 n1 ]
;;i
评价(jjl的评价); W, c1 `/ U  a7 F4 B# s) c
let j 3' s! W! X; e2 s8 k/ I
let k 4: b( c3 t/ n. q- g; |3 f5 a
while[j < trade-record-one-len]
, @( ^; B( U) B+ D$ @/ y5 B[
3 s/ t+ o, p1 ^0 V0 g3 Gwhile [((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
+ |/ Q' [8 E( t; a! Mset 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)
6 K$ v! ^6 t$ [0 f8 _set j
7 o  A% o/ c! {; [; [( j + 1)
, ~0 w- C7 o' q, e3 |$ p1 l: R
]2 S" u# \5 P! Y" F' @
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 ))
" A0 }2 D, K0 \, I2 b' q  c: Z5 E: B; o! \/ J

' f& q% `. }6 I4 _' b+ K( Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) P' b( R) ~" `6 {9 Y% n;;
及时更新il的评价质量的评价9 E) e6 h! t& B4 g- c. `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( `: S" g1 b8 \4 H+ Hset l (l + 1)# i5 Q; [. C. \, u% |, U1 W) K% }
]
% E" T( A4 L: b' ^. [/ Hend, e* c! t) N- a% M( V, R
1 U3 T! y5 P2 [  u
to update-credibility-list
7 N! |  x" D4 f8 Y$ v& Plet i 0+ D' f& f+ [9 @) t" Z2 b! d! T
while[i < people]( U; L% c2 s0 i% l4 F8 z1 g# R
[4 c" O, C; Q4 y% ?6 d6 _& F$ x/ k
let j 02 T8 w9 B# |+ X5 }3 W0 C
let note 09 e* `! q: l, ^+ u8 [  U
let k 0, j2 [0 v; y* u, t' k
;;
计作出过评价的邻居节点的数目/ D. ^8 d7 ~0 B% A: h& ^
while[j < people]
* _5 o7 X  ]- `: o' ?  Q' E[0 K$ F: u4 Q) ]' L
if (item j( [credibility] of turtle (i + 1)) != -1)4 P$ H, u' H+ S9 F8 ]
;;
判断是否给本turtle的评价质量做出过评价的节点
  K- u7 T) }; ]9 D; W[set note (note + item j ([credibility]of turtle (i + 1)))
, G0 v: d9 n5 V" m1 d8 k;;*(exp (-(people - 2)))/(people - 2))]
' b! j. G: A% O- R  p, x3 ^5 I
set k (k + 1)
4 V( Q7 j$ e2 j6 y/ Z5 ]]5 J7 `- E# H- ?4 o+ I
set j (j + 1)
, b) Y; r9 A- t2 k]' {1 a1 P1 N' n
set note (note *(exp (- (1 / k)))/ k)
& y8 d# f+ ^+ ]/ f+ m5 e8 gset credibility-list (replace-item i credibility-list note)
) \7 V0 }5 l1 A  Zset i (i + 1)
! \2 k% U+ V3 }]
9 |3 \: g7 `* A- Pend
6 F2 W  |4 I% @% Z; h  E8 B" }5 y' c7 n! O5 @
to update-global-reputation-list: I/ ?( U8 d, g% T7 ^! O$ R: R
let j 0. x9 j6 n6 [! _0 Z& U8 K
while[j < people]
5 P/ L: U, k/ q* F: C- Q[
3 E& n4 j/ [& u4 M- Z8 L& Olet new 0
/ J! M& S/ K% p+ \* {1 t8 Q% P1 F;;
暂存新的一个全局声誉
* D. U! \- ^4 Olet i 0! ^5 K& z: {+ ^1 H( h
let sum-money 0
5 _0 D2 _* M4 N2 V  ?" xlet credibility-money 0" ]! n0 c, B2 Y
while [i < people]
. h% q) R/ h/ r+ Q[
5 l; H! E, t: }4 lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 b0 H0 T' G7 J0 k8 _. A5 dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 t7 ^9 X$ w6 o
set i (i + 1)9 }' P. O- v9 Q7 c$ ]! ?0 T
]
* Y4 a/ _% A/ Q! W, Nlet k 0
6 Q" q( i% L8 a6 u- E8 Flet new1 0, c3 p0 A% e; W9 F4 |
while [k < people]) r6 r( m0 M* K. L" k  D
[
5 ~% d( j% Q% b7 Y9 Fset 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)1 x9 H" @6 v& @2 u- r
set k (k + 1)- J$ I! C- `, r
]; Y9 v! X0 `. t2 Y/ P, P6 f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % r0 t. }6 i, ~3 p4 S7 P9 a
set global-reputation-list (replace-item j global-reputation-list new)
+ a% U% w7 v8 A" \: Lset j (j + 1)5 x; |" V1 N7 q$ u
]
, t/ h9 X# t+ z* `# L0 m0 v# Oend
: C' h! k  Z- a/ [! P% \" k$ K: A/ J% [( S* N+ C) Z
4 z9 i3 g7 k; o) }- s

' D- W4 O# j9 j3 ?to get-color5 d- \& T8 W5 z( v; v+ m8 n" }
. N2 |' [& S' T
set color blue

' W( |$ a! p" N- s+ q% Yend
9 D. k( }6 ?' u6 E/ Z3 v( u+ A- a0 ~; ?- C' k6 f; E  H: d
to poll-class
! k6 D- ~8 ^1 ?3 J5 xend
% b$ Z0 r1 Z# r" E; P% O8 W" u. a8 E" S4 l: u
to setup-plot18 ?! j9 t! [+ P6 ^4 h& ~
; R5 M& j# f0 ]0 }- v
set-current-plot "Trends-of-Local-reputation"

3 n. H  _3 D, q$ f* b" C) k/ _) S. T: P0 C- j
set-plot-x-range 0 xmax
/ p( Y% l( d- {% _8 f
3 @8 j6 Z; F/ @! d- A. C
set-plot-y-range 0.0 ymax

) Q$ S& ^& O  r; }end/ [9 m8 K" s% S+ A5 m/ ^5 R
2 {, C. P" P1 r3 B) i: V& p
to setup-plot2
8 a2 s2 c  z3 I9 D" \' y
4 H4 I; W( W0 z2 ^3 T1 c: c1 l  wset-current-plot "Trends-of-global-reputation"

- t& E6 B( x/ R  W# j' H+ X; f" D* D; e
set-plot-x-range 0 xmax
& s7 B. q1 b& E* y; d. t" {

, ?; l7 {8 e+ G- P' ^. Bset-plot-y-range 0.0 ymax
* A) B/ M2 v3 u1 y; m0 N
end
- s. S  g, o' g4 _3 ^& S7 |2 b0 G) S
to setup-plot39 Q5 H6 R. z9 {$ z! `2 U' h
# i" K, S" D7 e. x" b: V! I& x
set-current-plot "Trends-of-credibility"
! r9 C  ?& D  b9 P

; d: t0 A, Z. e1 j- e# vset-plot-x-range 0 xmax

/ w; o: f$ K* S& @2 J' o6 U1 U1 ^3 p0 j  |0 X) u1 ?, s7 j
set-plot-y-range 0.0 ymax

6 @0 x* X0 G. Qend, I0 \; p) j; |. ~* G
  l% }9 J% h" e% S9 g  H: ^' F
to do-plots* a% S/ X# X  o, _8 r" u3 ~
set-current-plot "Trends-of-Local-reputation"$ i- r9 t" t3 t- g0 n
set-current-plot-pen "Honest service"" ~. F6 y) R$ ^) s) w
end
7 P7 j7 k  B; y% A! L3 j+ I% `2 \
- g$ f2 h& n7 y& r$ b[ 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./ L9 x) C, D1 S8 w% Y
- z) @' d: v9 Y" `8 n0 ]
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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